Resource Exhaustion Affecting python39:3.9/python39-cryptography package, versions <0:3.3.1-3.module+el8.10.0+21271+eccd1d86


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON39-7165695
  • published30 May 2024
  • disclosed12 Apr 2024

Introduced: 12 Apr 2024

CVE-2024-3651  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:8 python39:3.9/python39-cryptography to version 0:3.3.1-3.module+el8.10.0+21271+eccd1d86 or higher.
This issue was patched in RHSA-2024:3466.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39:3.9/python39-cryptography package and not the python39:3.9/python39-cryptography package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A vulnerability was identified in the kjd/idna library, specifically within the idna.encode() function, affecting version 3.6. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the idna.encode() function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.

CVSS Scores

version 3.1