gunicorn: CVE-2024-1135

Debian Bug report logs - #1069126
gunicorn: CVE-2024-1135

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: gunicorn: CVE-2024-1135

Date: Tue, 16 Apr 2024 21:21:18 +0200

Source: gunicorn
Version: 20.1.0-6
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for gunicorn.

CVE-2024-1135[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2024-1135
    https://www.cve.org/CVERecord?id=CVE-2024-1135
[1] https://huntr.com/bounties/22158e34-cfd5-41ad-97e0-a780773d96c1
[2] https://github.com/benoitc/gunicorn/commit/ac29c9b0a758d21f1e0fb3b3457239e523fa9f1d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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