CVE-2022-27815

SWHKD 1.1.5 unsafely uses the /tmp/swhkd.pid pathname. There can be an information leak or denial of service.

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://www.openwall.com/lists/oss-security/2022/04/14/1
• https://github.com/waycrate/swhkd/commit/e661a4940df78fbb7b52c622ac4ae6a3a7f7d8aa
• https://github.com/waycrate/swhkd/releases