Improper Check for Unusual or Exceptional Conditions Affecting python-cryptography package, versions *


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.08% (35th percentile)

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  • Snyk IDSNYK-UBUNTU1804-PYTHONCRYPTOGRAPHY-3319564
  • published14 Feb 2023
  • disclosed7 Feb 2023

Introduced: 7 Feb 2023

CVE-2023-23931  (opens in a new tab)
CWE-754  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:18.04 python-cryptography.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-cryptography package and not the python-cryptography package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1