CVE-2022-38699

Armoury Crate Service’s logging function has insufficient validation to check if the log file is a symbolic link. A physical attacker with general user privilege can modify the log file property to a symbolic link that points to arbitrary system file, causing the logging function to overwrite the system file and disrupt the system.

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://www.twcert.org.tw/tw/cp-132-6522-4eacb-1.html