Improper Check for Unusual or Exceptional Conditions Affecting py3-cryptography package, versions <39.0.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-ALPINE319-PY3CRYPTOGRAPHY-6110795
  • published8 Dec 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?

Upgrade Alpine:3.19 py3-cryptography to version 39.0.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-cryptography package and not the py3-cryptography package as distributed by Alpine. See How to fix? for Alpine:3.19 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