1. EXECUTIVE SUMMARY

​CVSS v3 7.8
​ATTENTION: Low attack complexity
​Vendor: Siemens
​Equipment: Solid Edge
​Vulnerabilities: Out-of-bounds Write, Out-of-bounds Read

2. RISK EVALUATION

​Successful exploitation of these vulnerabilities could allow an attacker to crash the application or execute arbitrary code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​The following products from Siemens are affected: 

​Solid Edge SE2023: All versions prior to V223.0 Update 7

3.2 VULNERABILITY OVERVIEW

3.2.1 ​OUT-OF-BOUNDS WRITE CWE-787

​The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing a specially crafted PAR file. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39181 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.2 ​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 DFT files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39182 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; 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 ​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 PSM files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39183 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.4 ​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 PSM files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39184 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.5 ​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 PAR files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39185 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.6 ​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 DFT files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39186 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.7 ​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 DFT files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39187 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.8 ​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 DFT files. This could allow an attacker to execute code in the context of the current process.

​CVE-2023-39188 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; 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 OUT-OF-BOUNDS WRITE CWE-787

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

​CVE-2023-39419 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

​CRITICAL INFRASTRUCTURE SECTORS: Multiple
​COUNTRIES/AREAS DEPLOYED: Worldwide
​COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

​Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

​Siemens has released an update V223.0 Update 7 for Solid Edge SE2023 and recommends updating to the latest version.

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

​Avoid to open untrusted files from unknown sources in Solid Edge.

​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-811403 in HTML and CSAF.

​CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 at 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.

​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 exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.