Resource Exhaustion Affecting python39:3.9/python39-pyyaml package, versions <0:5.4.1-1.module_el8.6.0+2780+a40f65e1


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
1.11% (85th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PYTHON39-5726825
  • published28 May 2023
  • disclosed10 May 2022

Introduced: 10 May 2022

CVE-2021-3737  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 python39:3.9/python39-pyyaml to version 0:5.4.1-1.module_el8.6.0+2780+a40f65e1 or higher.
This issue was patched in ALSA-2021:4160.

NVD Description

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

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1