Pillow is a Python imaging library. Prior to 13.0.0, Pillows rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that applies a rank, median, minimum, or maximum filter. This causes a native process crash. This issue is fixed in version 13.0.0.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pillow | Python | * | 13.0.0 (excluding) |
Potential Mitigations
References
- https://github.com/python-pillow/Pillow/commit/443e3130a8c11594fd0e296afad497e11e678961
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-27h8-gf7j-v5hc
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-27h8-gf7j-v5hc