CVE-2023-2939

Insufficient data validation in Installer in Google Chrome on Windows prior to 114.0.5735.90 allowed a local attacker to perform privilege escalation via crafted symbolic link. (Chromium security severity: Medium)

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• https://chromereleases.googleblog.com/2023/05/stable-channel-update-for-desktop_30.html
• https://crbug.com/1427431
• https://security.gentoo.org/glsa/202311-11
• https://security.gentoo.org/glsa/202401-34
• https://www.debian.org/security/2023/dsa-5418
• https://chromereleases.googleblog.com/2023/05/stable-channel-update-for-desktop_30.html
• https://crbug.com/1427431
• https://security.gentoo.org/glsa/202311-11
• https://security.gentoo.org/glsa/202401-34
• https://www.debian.org/security/2023/dsa-5418