Expected Behavior Violation Affecting cryptography package, versions [1.8,39.0.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.08% (35th percentile)

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  • Snyk IDSNYK-PYTHON-CRYPTOGRAPHY-3314966
  • published8 Feb 2023
  • disclosed7 Feb 2023
  • creditUnknown

Introduced: 7 Feb 2023

CVE-2023-23931  (opens in a new tab)
CWE-440  (opens in a new tab)

How to fix?

Upgrade cryptography to version 39.0.1 or higher.

Overview

Affected versions of this package are vulnerable to Expected Behavior Violation in Cipher.update_into, which allows immutable objects (such as bytes) to be mutated, violating fundamental rules of Python. This allows programmers to misuse an API, and cannot be exploited by attacker-controlled data alone.

References

CVSS Scores

version 3.1