Vulnerabilities > CVE-2023-23931 - Improper Check for Unusual or Exceptional Conditions vulnerability in Cryptography.Io Cryptography

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
LOW
Availability impact
LOW
network
low complexity
cryptography-io
CWE-754

Summary

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.

Vulnerable Configurations

Part Description Count
Application
Cryptography.Io
61