CVEvulnerability

CVE-2023-23931

6.5 MEDIUM Published 2023-02-07 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-02-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Weaknesses
CWE-754

Description

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.

Affected configurations

• cryptography.io cryptography (>= 1.8 < 39.0.1)

Related

Weakness · CWE (1)

  • CWE-754 Improper Check for Unusual or Exceptional Conditions weakness

References