CVE-2010-5105

The undo save quit routine in the kernel in Blender 2.5, 2.63a, and earlier allows local users to overwrite arbitrary files via a symlink attack on the quit.blend temporary file. NOTE: this issue might be a regression of CVE-2008-1103.

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-updates/2013-02/msg00047.html
• http://www.openwall.com/lists/oss-security/2012/09/06/3
• http://www.openwall.com/lists/oss-security/2012/09/07/13
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584621
• https://developer.blender.org/T22509