Description
ImageMagick before 7.1.2-32 and 6.9.13-57 contains a policy bypass vulnerability in LoadPolicyCache that silently skips security policy rules when policy.xml uses an alternate DOCTYPE. A valid DOCTYPE not ending in ']>' makes the parser consume the rest of the file, so no policy rules are applied and restricted operations become allowed.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
ImageMagick ImageMagick
Default version status: unaffected
7.0.0-0 to < 7.1.2-32affected0 to < 6.9.13-57affected
References
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jjp4-3fwf-393j ↗
- https://github.com/ImageMagick/ImageMagick/commit/1926ccf119141c26274c120d1899dffae19b0c71 ↗
- https://github.com/ImageMagick/ImageMagick/commit/399d4bd3b081f44c7fef78153f65e8cdebed9f1a ↗
- https://github.com/ImageMagick/ImageMagick6/commit/da6022b2efe6cce8a2fd8f9e51188a45a3b9d558 ↗
- https://github.com/ImageMagick/ImageMagick6/commit/402ebc5353e569234908962cbdf451531ff66a57 ↗
- https://github.com/ImageMagick/ImageMagick/blob/7.1.2-31/MagickCore/policy.c#L1138-L1145 ↗
- https://github.com/ImageMagick/ImageMagick ↗
- https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-32-and-6.9.13-57-security-policy-bypass-via-policy-xml-doctype ↗