python-cryptography: CVE-2023-23931

Debian Bug report logs - #1031049
python-cryptography: CVE-2023-23931

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: python-cryptography: CVE-2023-23931

Date: Fri, 10 Feb 2023 22:23:50 +0100

Source: python-cryptography
Version: 38.0.4-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
Control: found -1 3.3.2-1

Hi,

The following vulnerability was published for python-cryptography.

CVE-2023-23931[0]:
| cryptography is a package designed to expose cryptographic primitives
| and recipes to Python developers. In affected versions
| `Cipher.update_into` would accept Python objects which implement the
| buffer protocol, but provide only immutable buffers. This would allow
| immutable objects (such as `bytes`) to be mutated, thus violating
| fundamental rules of Python and resulting in corrupted output. This
| now correctly raises an exception. This issue has been present since
| `update_into` was originally introduced in cryptography 1.8.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-23931
    https://www.cve.org/CVERecord?id=CVE-2023-23931
[1] https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r
[2] https://github.com/pyca/cryptography/commit/9fbf84efc861668755ab645530ec7be9cf3c6696

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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