Observable Timing Discrepancy Affecting cryptography package, versions [,42.0.0)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-PYTHON-CRYPTOGRAPHY-6126975
  • published15 Dec 2023
  • disclosed14 Dec 2023
  • creditHubert Kario

Introduced: 14 Dec 2023

CVE-2023-50782  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade cryptography to version 42.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Observable Timing Discrepancy. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data (Marvin).

Note:

This vulnerability exists due to an incomplete fix for CVE-2020-25659.

CVSS Scores

version 3.1