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Debian LTS Advisory DLA-3331-2                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                           Chris Lamb
February 27, 2023                             https://wiki.debian.org/LTS
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Package        : python-cryptography
Version        : 2.6.1-3+deb10u4
CVE ID         : CVE-2023-23931

It was discovered that there was a regression in the previous fix for
python-cryptography, a Python library offering a number of encryption
and cryptography primitives.

The original issue was that there was a potential memory corrution
vulnerability. However, the change introduced a regression due to
incorrectly backporting upstream's patch to the (older) version in
Debian LTS.

For Debian 10 buster, this problem has been fixed in version
2.6.1-3+deb10u4.

We recommend that you upgrade your python-cryptography packages.

For the detailed security status of python-cryptography please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/python-cryptography

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS