CVE-2020-6477

Inappropriate implementation in installer in Google Chrome on OS X prior to 83.0.4103.61 allowed a local attacker to perform privilege escalation via a crafted file.

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

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.html
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.html
• https://chromereleases.googleblog.com/2020/05/stable-channel-update-for-desktop_19.html
• https://crbug.com/946156
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQYH5OK7O4BU6E37WWG5SEEHV65BFSGR/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLFZ5N4EK6I4ZJP5YSKLLVN3ELXEB4XT/
• https://security.gentoo.org/glsa/202006-02