CVE-2024-1135 Affecting py3-gunicorn package, versions <22.0.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
3% (86th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PY3GUNICORN-6672378
  • published23 Apr 2024
  • disclosed16 Apr 2024

Introduced: 16 Apr 2024

CVE-2024-1135  (opens in a new tab)

How to fix?

Upgrade Chainguard py3-gunicorn to version 22.0.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-gunicorn package and not the py3-gunicorn package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Gunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks including cache poisoning, session manipulation, and data exposure.

CVSS Base Scores

version 3.1