CVE-2011-2924

foomatic-rip filter v4.0.12 and prior used insecurely creates temporary files for storage of PostScript data by rendering the data when the debug mode was enabled. This flaw may be exploited by a local attacker to conduct symlink attacks by overwriting arbitrary files accessible with the privileges of the user running the foomatic-rip universal print filter.

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://access.redhat.com/security/cve/cve-2011-2924
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2924
• https://launchpad.net/ubuntu/+source/foomatic-filters/4.0.12-1
• https://lwn.net/Articles/459979/
• https://security-tracker.debian.org/tracker/CVE-2011-2924
• https://www.openwall.com/lists/oss-security/2014/02/08/5/1