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1. EXECUTIVE SUMMARY

CVSS v4 8.4
ATTENTION: Low attack complexity
Vendor: National Instruments
Equipment: LabVIEW
Vulnerabilities: Out-of-Bounds Read, Improper Restriction of Operations within the Bounds of a Memory Buffer

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow a local attacker to disclose information and execute arbitrary code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following National Instruments LabVIEW products are affected:

LabVIEW: Versions 24.1f0 and prior

3.2 Vulnerability Overview

3.2.1 OUT-OF-BOUNDS READ CWE-125

LabVIEW is vulnerable to an out-of-bounds read, which could allow a local attacker to execute arbitrary code on affected installations of LabVIEW. User interaction is required to exploit the vulnerabilities in that the user must open a malicious VI file.

CVE-2024-4079 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (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-2024-4079. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

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

The library tdcore_24_1.dll contains a memory corruption vulnerability, which could allow a local attacker to disclose information or execute arbitrary code on affected installations of LabVIEW. User interaction is required to exploit the vulnerability in that the user must open a malicious VI file.

CVE-2024-4080 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (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-2024-4080. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

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

LabVIEW contains a memory corruption vulnerability, which could allow a local attacker to disclose information or execute arbitrary code on affected installations of LabVIEW. User interaction is required to exploit the vulnerability in that the user must open a malicious VI file.

CVE-2024-4081 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (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-2024-4081. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Defense Industrial Base, Information Technology, Transportation Systems
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Michael Heinzl reported these vulnerabilities to CISA.

4. MITIGATIONS

National Instruments has provided a fix for these issues and recommends users to refer to their public advisories:

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/out-of-bounds-read-due-to-missing-bounds-check-in-labview.html
https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/memory-corruption-issues-due-to-improper-length-checks-in-labview.html

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 are not exploitable remotely.

5. UPDATE HISTORY

July 23, 2024: Initial Publication