CVE-2021-28678

Advisory

Pillow-simd includes a fix for CVE-2021-28678: For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run many times on empty data.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data. See CVE-2021-28678.


FEDORA:FEDORA-2021-77756994ba: https://lists.fedoraproject.org/archives/list/[email protected]/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
MISC:https://github.com/python-pillow/Pillow/pull/5377: https://github.com/python-pillow/Pillow/pull/5377
MISC:https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28678-fix-blp-dos: https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28678-fix-blp-dos

Resources

• https://github.com/python-pillow/Pillow/commit/ee635befc6497f1c6c4fdb58c232e62d922ec8b7
• https://inspector.pypi.io/project/pillow-simd/8.2.0.post0/packages/37/4a/ffa030eda15bf00d5f97d65e41ea095cb4c74d6bf4acdfe0c0c93449c2c1/Pillow-SIMD-8.2.0.post0.tar.gz/Pillow-SIMD-8.2.0.post0/src/PIL/BlpImagePlugin.py
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28678