HTTP Request Smuggling Affecting python3-gunicorn package, versions <0:20.0.4-7.el9ost


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL9-PYTHON3GUNICORN-7015536
  • published23 May 2024
  • disclosed15 Apr 2024

Introduced: 15 Apr 2024

CVE-2024-1135  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade RHEL:9 python3-gunicorn to version 0:20.0.4-7.el9ost or higher.
This issue was patched in RHSA-2024:2727.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-gunicorn package and not the python3-gunicorn package as distributed by RHEL. See How to fix? for RHEL:9 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 Scores

version 3.1