As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 5.6
ATTENTION: Exploitable remotely
Vendor: Siemens
Equipment: SITOP UPS1600 10 A Ethernet/ PROFINET (6EP4134-3AB00-2AY0), SITOP UPS1600 20 A Ethernet/ PROFINET (6EP4136-3AB00-2AY0), SITOP UPS1600 40 A Ethernet/ PROFINET (6EP4137-3AB00-2AY0), SITOP UPS1600 EX 20 A Ethernet PROFINET (6EP4136-3AC00-2AY0)
Vulnerabilities: Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to cause limited impact in the affected systems.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Siemens SITOP UPS1600, an uninterruptible power supply, are affected:

SITOP UPS1600 10 A Ethernet/ PROFINET (6EP4134-3AB00-2AY0): All versions prior to V2.5.4
SITOP UPS1600 20 A Ethernet/ PROFINET (6EP4136-3AB00-2AY0): All versions prior to V2.5.4
SITOP UPS1600 40 A Ethernet/ PROFINET (6EP4137-3AB00-2AY0): All versions prior to V2.5.4
SITOP UPS1600 EX 20 A Ethernet PROFINET (6EP4136-3AC00-2AY0) All versions prior to V2.5.4

3.2 Vulnerability Overview

3.2.1 OUT-OF-BOUNDS WRITE CWE-787

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

CVE-2023-26552 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.2 OUT-OF-BOUNDS WRITE CWE-787

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

CVE-2023-26553 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.3 OUT-OF-BOUNDS WRITE CWE-787

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a ‘’ character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

CVE-2023-26554 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens recommends users to update to the latest version:

SITOP UPS1600 10 A Ethernet/ PROFINET (6EP4134-3AB00-2AY0): Update to V2.5.4 or later version
SITOP UPS1600 20 A Ethernet/ PROFINET (6EP4136-3AB00-2AY0): Update to V2.5.4 or later version
SITOP UPS1600 40 A Ethernet/ PROFINET (6EP4137-3AB00-2AY0): Update to V2.5.4 or later version
SITOP UPS1600 EX 20 A Ethernet PROFINET (6EP4136-3AC00-2AY0): Update to V2.5.4 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-SSA-238730 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities have a high attack complexity.

5. UPDATE HISTORY

June 13, 2024: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Low Attack Complexity
Vendor: Siemens
Equipment: Teamcenter Visualization and JT2Go
Vulnerabilities: Out-of-bounds Read, Allocation of Resources Without Limits or Throttling, NULL Pointer Dereference

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to create a denial-of-service condition or execute code within the context of the current process.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products, are affected:

Siemens JT2Go: All versions prior to V2312.0004
Siemens Teamcenter Visualization V14.2: All Versions
Siemens Teamcenter Visualization V14.3: All versions prior to V14.3.0.9
Siemens Teamcenter Visualization V2312: All versions prior to V2312.0004

3.2 Vulnerability Overview

3.2.1 OUT-OF-BOUNDS READ CWE-125

The affected applications contain an out-of-bounds read past the end of an allocated structure while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2024-26275 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-26275.
A base score of 7.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)).

3.2.2 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING CWE-770

The affected application contains a stack exhaustion vulnerability while parsing a specially crafted X_T file. This could allow an attacker to cause denial-of-service condition.

CVE-2024-26276 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).

A CVSS v4 score has also been calculated for CVE-2024-26276.
A base score of 4.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N)).

3.2.3 NULL POINTER DEREFERENCE CWE-476

The affected applications contain a null pointer dereference vulnerability while parsing specially crafted X_T files. An attacker could leverage this vulnerability to crash the application causing denial-of-service condition.

CVE-2024-26277 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).

A CVSS v4 score has also been calculated for CVE-2024-26277.
A base score of 4.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N)).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Defense Industrial Base, and Energy
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

JT2Go, Teamcenter Visualization V14.2, Teamcenter Visualization V14.3, Teamcenter Visualization V2312: Do not open untrusted XT files in Teamcenter Visualization and JT2Go
Teamcenter Visualization V14.2: Currently no fix is available
Teamcenter Visualization V14.3: Update to V14.3.0.9 or later version
JT2Go: Update to V2312.0004 or later versionhttps://plm.sw.siemens.com/en-US/plm-components/jt/jt2go/
Teamcenter Visualization V2312: Update to V2312.0004 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-771940 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

June 13, 2024: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 8.5
ATTENTION: Low Attack Complexity
Vendor: Siemens
Equipment: PowerSys
Vulnerability: Improper Authentication

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a local attacker to bypass authentication, thereby gaining administrative privileges for the managed remote devices.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens are affected:

Siemens PowerSys: versions prior to V3.11

3.2 Vulnerability Overview

3.2.1 IMPROPER AUTHENTICATION CWE-287

Siemens PowerSys insufficiently protects responses to authentication requests. This could allow a local attacker to bypass authentication, thereby gaining administrative privileges for the managed remote devices.

CVE-2024-36266 has been assigned to this vulnerability. A CVSS v3 base score of 9.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-36266. A base score of 8.5 has been calculated; the CVSS vector string is (AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Turek Witold from Polskie Sieci Elektroenergetyczne reported this vulnerability to Siemens.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

PowerSys: Update to V3.11 or later version
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-024584 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

June 13, 2024: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 8.8
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SIMATIC S7-200 SMART devices
Vulnerability: Use of Insufficiently Random Values

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to create a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens programmable logic controllers are affected:

Siemens SIMATIC S7-200 SMART CPU CR40 (6ES7288-1CR40-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU CR60 (6ES7288-1CR60-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU SR30 (6ES7288-1SR30-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU SR40 (6ES7288-1SR40-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU SR60 (6ES7288-1SR60-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU ST20 (6ES7288-1ST20-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU ST30 (6ES7288-1ST30-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU ST40 (6ES7288-1ST40-0AA1): All versions
Siemens SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA0): All versions
Siemens SIMATIC S7-200 SMART CPU ST60 (6ES7288-1ST60-0AA1): All versions

3.2 Vulnerability Overview

3.2.1 USE OF INSUFFICIENTLY RANDOM VALUES CWE-330

Affected devices are using a predictable IP ID sequence number. This leaves the system susceptible to a family of attacks which rely on the use of predictable IP ID sequence numbers as their base method of attack and eventually could allow an attacker to create a denial-of-service condition.

CVE-2024-35292 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H).

A CVSS v4 score has also been calculated for CVE-2024-35292. A base score of 8.8 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy, Food and Agriculture, Water and Wastewater Systems
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

Restrict access to the network where the affected products are located by introducing strict access control mechanisms.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-481506 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

June 13, 2024: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 8.2
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: ST7 ScadaConnect
Vulnerabilities: Integer Overflow or Wraparound, Double Free, Improper Certificate Validation, Inefficient Regular Expression Complexity, Improper Check for Unusual or Exceptional Conditions, Improper Input Validation, NULL Pointer Dereference, Missing Encryption of Sensitive Data, Improper Restriction of Operations within the Bounds of a Memory Buffer, Uncontrolled Resource Consumption

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to disclose information, cause a denial-of-service (DoS) condition, or execute arbitrary code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products, are affected:

Siemens ST7 ScadaConnect (6NH7997-5DA10-0AA0): Versions prior to 1.1

3.2 Vulnerability Overview

3.2.1 INTEGER OVERFLOW OR WRAPAROUND CWE-190

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

CVE-2022-40303 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.2 DOUBLE FREE CWE-415

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

CVE-2022-40304 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.3 IMPROPER CERTIFICATE VALIDATION CWE-295

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the -policy argument to the command line utilities or by calling the X509_VERIFY_PARAM_set1_policies() function.

CVE-2023-0464 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.4 IMPROPER CERTIFICATE VALIDATION CWE-295

Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether. Policy processing is disabled by default but can be enabled by passing the -policy argument to the command line utilities or by calling the X509_VERIFY_PARAM_set1_policies() function.

CVE-2023-0465 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

3.2.5 IMPROPER CERTIFICATE VALIDATION CWE-295

The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification.As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy()function.Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument.Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications.

CVE-2023-0466 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

3.2.6 INEFFICIENT REGULAR EXPRESSION COMPLEXITY CWE-1333

Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial-of-Service. The function DH_check() performs various checks on DH parameters. One of those checks confirms that the modulus (‘p’ parameter) is not too large. Trying to use a very large modulus is slow and OpenSSL will not normally use a modulus which is over 10,000 bits in length. However the DH_check() function checks numerous aspects of the key or parameters that have been supplied. Some of those checks use the supplied modulus value even if it has already been found to be too large. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial-of-Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the ‘-check’ option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

CVE-2023-3446 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

3.2.7 IMPROPER CHECK FOR UNUSUAL OR EXCEPTIONAL CONDITIONS CWE-754

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_generate_key() to generate an X9.42 DH key may experience long delays. Likewise, applications that use DH_check_pub_key(), DH_check_pub_key_ex() or EVP_PKEY_public_check() to check an X9.42 DH key or X9.42 DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial-of-Service. While DH_check() performs all the necessary checks (as of CVE-2023-3817), DH_check_pub_key() doesn’t make any of these checks, and is therefore vulnerable for excessively large P and Q parameters. Likewise, while DH_generate_key() performs a check for an excessively large P, it doesn’t check for an excessively large Q. An application that calls DH_generate_key() or DH_check_pub_key() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial-of-Service attack. DH_generate_key() and DH_check_pub_key() are also called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate(). Also vulnerable are the OpenSSL pkey command line application when using the “-pubcheck” option, as well as the OpenSSL genpkey command line application. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

CVE-2023-5678 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

3.2.8 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-21808 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.9 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CVE-2023-24895 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.10 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CVE-2023-24897 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.11 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-24936 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.12 IMPROPER INPUT VALIDATION CWE-20

.NET DLL Hijacking Remote Code Execution Vulnerability

CVE-2023-28260 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.13 NULL POINTER DEREFERENCE CWE-476

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

CVE-2023-28484 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

3.2.14 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Denial-of-Service Vulnerability

CVE-2023-29331 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.15 DOUBLE FREE CWE-415

An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the ” value).

CVE-2023-29469 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

3.2.16 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-32032 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H).

3.2.17 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-33126 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.2.18 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-33127 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.19 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-33128 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.2.20 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-33135 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.2.21 IMPROPER INPUT VALIDATION CWE-20

ASP.NET and Visual Studio Security Feature Bypass Vulnerability

CVE-2023-33170 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.22 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-35390 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.23 IMPROPER INPUT VALIDATION CWE-20

ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability

CVE-2023-35391 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.24 IMPROPER INPUT VALIDATION CWE-20

ASP.NET Core Denial-of-Service Vulnerability

CVE-2023-36038 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).

3.2.25 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-36049 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L).

3.2.26 IMPROPER INPUT VALIDATION CWE-20

Microsoft QUIC Denial-of-Service Vulnerability

CVE-2023-36435 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.27 IMPROPER INPUT VALIDATION CWE-20

ASP.NET Core – Security Feature Bypass Vulnerability

CVE-2023-36558 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.28 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

Visual Studio Remote Code Execution Vulnerability

CVE-2023-36792 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.29 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

Visual Studio Remote Code Execution Vulnerability

CVE-2023-36793 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.30 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

Visual Studio Remote Code Execution Vulnerability

CVE-2023-36794 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.31 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

Visual Studio Remote Code Execution Vulnerability

CVE-2023-36796 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.32 IMPROPER INPUT VALIDATION CWE-20

.NET Core and Visual Studio Denial-of-Service Vulnerability

CVE-2023-36799 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

3.2.33 IMPROPER INPUT VALIDATION CWE-20

Microsoft QUIC Denial-of-Service Vulnerability

CVE-2023-38171 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.34 IMPROPER INPUT VALIDATION CWE-20

.NET Core and Visual Studio Denial-of-Service Vulnerability

CVE-2023-38178 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.35 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Denial-of-Service Vulnerability

CVE-2023-38180 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.36 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119

Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial-of-Service (DoS) via supplying a crafted XML file. NOTE: the vendor’s position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.

CVE-2023-39615 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

3.2.37 UNCONTROLLED RESOURCE CONSUMPTION CWE-400

The HTTP/2 protocol allows a denial-of-service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

CVE-2023-44487 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Energy, Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

ST7 ScadaConnect (6NH7997-5DA10-0AA0): Update to V1.1 or later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-341067 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

June 13, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 10.0
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Intrado
Equipment: 911 Emergency Gateway (EGW)
Vulnerability: SQL Injection

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to execute malicious code, exfiltrate data, or manipulate the database.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Intrado’s 911 Emergency Gateway are affected:

911 Emergency Gateway (EGW): All versions

3.2 Vulnerability Overview

3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND (‘SQL INJECTION’) CWE-89

Intrado 911 Emergency Gateway login form is vulnerable to an unauthenticated blind time-based SQL injection, which may allow an attacker to execute malicious code, exfiltrate data, or manipulate the database.

CVE-2024-1839 has been assigned to this vulnerability. A CVSS v3.1 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-1839. A base score of 10.0 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/S:P/AU:Y/R:U/V:C).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Emergency Services
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

An anonymous individual reported this vulnerability to CISA.

4. MITIGATIONS

Intrado has provided a patch to mitigate the vulnerability. Any EGWs deployed on older revisions will need to be upgraded to the 5.5/5.6 branch to apply the patch. For assistance in obtaining the patch, contact Intrado’s technical support group at 1-888-908-4167 or E911Support@intrado.com.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

June 11, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 8.4
ATTENTION: Exploitable remotely/low attack complexity
Vendor: AVEVA
Equipment: PI Web API
Vulnerability: Deserialization of Untrusted Data

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to perform remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of AVEVA PI Web API, a RESTful interface to the PI system, are affected:

AVEVA PI Web API: Versions 2023 and prior

3.2 Vulnerability Overview

3.2.1 Deserialization of Untrusted Data CWE-502

There is a vulnerability in AVEVA PI Web API that could allow malicious code to execute on the PI Web API environment under the privileges of an interactive user that was socially engineered to use API XML import functionality with content supplied by an attacker.

CVE-2024-3468 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L).

A CVSS v4 score has also been calculated for CVE-2024-3468. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United Kingdom

3.4 RESEARCHER

AVEVA reported this vulnerability to CISA.

4. MITIGATIONS

AVEVA recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Customers using affected products should apply security updates as soon as possible:

From OSI Soft Customer Portal, search for “PI Web API” and select version “2023 SP1” or later.

(Alternative) PI Web API 2021 SP3 can be fixed by upgrading PI AF Client to one of the versions specified in AVEVA Security Bulletin AVEVA-2024-004 / ICSA-24-163-03

AVEVA further recommends users follow general defensive measures:

Set “DisableWrites” configuration setting to true, if this instance of PI Web API is used only for reading data or GET requests.
Uninstall Core Endpoints feature if this instance of PI Web API is used only for data collection from AVEVA Adapters. Keep OMF feature installed.
Limit AF Servers’ Administrators, so that most of the PI Web API user accounts don’t have the permission to change the backend AF servers.

For additional information please refer to AVEVA-2024-003

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

June 11, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 8.3
ATTENTION: Low attack complexity
Vendor: Rockwell Automation
Equipment: ControlLogix, GuardLogix, CompactLogix
Vulnerability: Always-Incorrect Control Flow Implementation

2. RISK EVALUATION

Successful exploitation of this vulnerability could compromise the availability of the device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Rockwell Automation reports that the following controllers are affected:

ControlLogix 5580: V34.011
GuardLogix 5580: V34.011
1756-EN4: V4.001
CompactLogix 5380: V34.011
Compact GuardLogix 5380: V34.011
CompactLogix 5380: V34.011
ControlLogix 5580: V34.011
CompactLogix 5480: V34.011

3.2 Vulnerability Overview

3.2.1 Always-Incorrect Control Flow Implementation CWE-670

Rockwell Automation was made aware of a vulnerability that causes all affected controllers on the same network to result in a major nonrecoverable fault (MNRF/Assert). This vulnerability could be exploited by sending abnormal packets to the mDNS port. If exploited, the availability of the device would be compromised.

CVE-2024-5659 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

A CVSS v4 score has also been calculated for CVE-2024-5659. A base score of 8.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Rockwell Automation reported this vulnerability to CISA.

4. MITIGATIONS

Rockwell Automation offers users the following solutions:

ControlLogix 5580: corrected in V34.014, V35.013, V36.011 and later
GuardLogix 5580: corrected in V34.014, V35.013, V36.011 and later
1756-EN4: corrected in V6.001 and later
CompactLogix 5380: corrected in V34.014, V35.013, V36.011 and later
Compact GuardLogix 5380: corrected in V34.014, V35.013, V36.011 and later
CompactLogix 5380: corrected in V34.014, V35.013, V36.011 and later
ControlLogix 5580: corrected in V34.014, V35.013, V36.011 and later
CompactLogix 5480: corrected in V34.014, V35.013, V36.011 and later

Rockwell Automation encourages users of the affected software, who are not able to upgrade to one of the corrected versions, to apply the risk mitigations where possible.

Users who do not use Automatic Policy Deployment (APD) should block mDNS port, 5353 to help prevent communication.
Enable CIP Security. CIP Security with Rockwell Automation Products Application Technique
Security Best Practices

For more information, see Rockwell Automation’s security advisory

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as virtual private networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

June 11, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 7.0
ATTENTION: Low attack complexity
Vendor: AVEVA
Equipment: PI Asset Framework Client
Vulnerability: Deserialization of Untrusted Data

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow malicious code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of AVEVA PI Asset Framework Client, a tool to model either physical or logical objects, are affected:

PI Asset Framework Client: 2023
PI Asset Framework Client: 2018 SP3 P04 and all prior

3.2 Vulnerability Overview

3.2.1 Deserialization of Untrusted Data CWE-502

There is a vulnerability in AVEVA PI Asset Framework Client that could allow malicious code to execute on the PI System Explorer environment under the privileges of an interactive user that was socially engineered to import XML supplied by an attacker.

CVE-2024-3467 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-3467. A base score of 7.0 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United Kingdom

3.4 RESEARCHER

AVEVA reported this vulnerability to CISA.

4. MITIGATIONS

AVEVA recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Customers using affected products should apply security updates as soon as possible:

(Recommended) All affected versions can be fixed by upgrading to PI AF Client 2023 Patch 1 or later:
From OSI Soft Customer Portal, search for “Asset Framework” and select “PI Asset Framework (AF) Client 2023 Patch 1” or later.
(Alternative) AF Client 2018 SP3 P04 and prior can be fixed by deploying PI AF Client 2018 SP3 Patch 5 or later:
From OSI Soft Customer Portal, search for “Asset Framework” and select either “PI Asset Framework (AF) Client 2018 SP3 Patch 5” or later.

AVEVA further recommends users follow general defensive measures:

Run PI System Explorer as a least privilege interactive account when possible.
Establish procedures for verifying the source of XML is trusted before importing into PI System Explorer.

For additional information please refer to AVEVA-2024-004

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

June 11, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v4 5.1
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Mitsubishi Electric
Equipment: CC-Link IE TSN Industrial Managed Switch
Vulnerability: Allocation of Resources Without Limits or Throttling

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to cause a temporary denial-of service (DoS) condition in the web service on the product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of CC-Link IE TSN Industrial Managed Switch are affected:

NZ2MHG-TSNT8F2: Versions 05 and prior
NZ2MHG-TSNT4: Versions 05 and prior

3.2 Vulnerability Overview

3.2.1 Allocation of Resources Without Limits or Throttling CWE-770

Mitsubishi Electric CC-Link IE TSN Industrial Managed Switch has an OpenSSL vulnerability that allows an attacker to cause a temporary denial-of service (DoS) condition on the web service of the product by getting a legitimate administrator user to import specially crafted certificate that makes the product experience notable to very long delays.

CVE-2023-2650 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.7 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L).

A CVSS v4 score has also been calculated forCVE-2023-2650. A base score of 5.1 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Mitsubishi Electric reported this vulnerability to CISA.

4. MITIGATIONS

Mitsubishi Electric recommends users to update to the fixed versions by following the steps below.

[Fixed versions]

CC-Link IE TSN Industrial Managed Switch NZ2MHG-TSNT8F2: Version “06” or later
CC-Link IE TSN Industrial Managed Switch NZ2MHG-TSNT4: Version “06” or later

[Update steps]

Contact your local Mitsubishi Electric representative to obtain the fixed firmware version file for CC-Link IE TSN Industrial Managed Switch.
After logging into NZ2MHG-TSNT8F2 or NZ2MHG-TSNT4 through the web interface, update the firmware to the fixed firmware version file mentioned in the above (1) by the function of [System] -> [System Management] -> [Firmware Upgrade] from Function menu. For the detailed procedures, please refer to “CC-Link IE TSN Industrial Managed Switch User’s Manual (SH-082449ENG)”.

Mitsubishi Electric recommends that customers take the following mitigations to minimize the risk of exploiting this vulnerability:

When internet access is required, use a virtual private network (VPN) or other means to prevent unauthorized access.
Use the products within a LAN and block access from untrusted networks and hosts.
Restrict physical access to the product and your computer and network equipment on the same network.
After you log into NZ2MHG-TSNT8F2 or NZ2MHG-TSNT4 through the web interface, change user name and password from default setting at [Account Management] displayed on the function menu. Also, set the proper access permissions for the users.

For additional information see Mitsubishi Electric advisory 2024-002

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

June 6, 2024: Initial Publication