Description
Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.
Problem types
CWE-770: Allocation of Resources Without Limits or Throttling
CWE-400: Uncontrolled Resource Consumption
Product status
References
github.com/...Pillow/security/advisories/GHSA-whj4-6x5x-4v2j
github.com/python-pillow/Pillow/pull/9521
github.com/...ommit/3cb854e8b2bab43f40e342e665f9340d861aa628
pillow.readthedocs.io/en/stable/releasenotes/12.2.0.html