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PYSEC-2021-94

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / pillow

Introduced in: 0 Fixed in: 8.2.0

Fix pip install --upgrade 'pillow>=8.2.0'

References

https://github.com/python-pillow/Pillow/pull/5377 [WEB]
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28678-fix-blp-dos [WEB]
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/ [WEB]
https://github.com/advisories/GHSA-hjfx-8p6c-g7gx [ADVISORY]