CVE-2014-6407

Docker before 1.3.2 allows remote attackers to write to arbitrary files and execute arbitrary code via a (1) symlink or (2) hard link attack in an image archive in a (a) pull or (b) load operation.

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.fedoraproject.org/pipermail/package-announce/2014-December/145154.html
• http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00009.html
• http://secunia.com/advisories/60171
• http://secunia.com/advisories/60241
• http://www.openwall.com/lists/oss-security/2014/11/24/5
• https://docs.docker.com/v1.3/release-notes/