Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)

[ Description ]Official description

Pillow is a Python imaging library. From 8.2.0 until 13.0.0, Pillow's tiled-TIFF decoder can read past the tile buffer while copying four-byte pixels. In _decodeTile, libtiff can return a tile allocation smaller than the required row stride multiplied by the tile length, and Pillow's stride-and-copy loop walks beyond that allocation. An attacker can supply a crafted tiled TIFF to an application that loads it. This can expose adjacent heap data in pixels or crash the process. This issue is fixed in version 13.0.0.

[ Fixes ]Fixes and patches

• pillow 13.0.0Fixed version · GitHub Advisories · pip package pillow: upgrade to 13.0.0 or later (affected >= 8.2.0, < 13.0.0)

[ Packages ]Affected open-source packages

• pillow pipAffected >= 8.2.0, < 13.0.0 · fixed in 13.0.0 · GHSA-462x-pgg6-55fp

[ References ]References

• github.com/python-pillow/Pillow/commit/76869efdbbf2ad7dccd7536520fb61b7a00ab61e
• github.com/python-pillow/Pillow/releases/tag/13.0.0
• github.com/python-pillow/Pillow/security/advisories/GHSA-462x-pgg6-55fp