CVE-2024-1135
gunicorn - security update
Description
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.
How to fix CVE-2024-1135
To remediate CVE-2024-1135, upgrade the affected package to a fixed version below.
- —upgrade to 20.1.0-1+deb11u1 or later
- —upgrade to 19.9.0-1+deb10u1 or later
- —upgrade to 20.1.0-1+deb11u1 or later
- —upgrade to 22.0.0 or later
Is CVE-2024-1135 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 20.1.0-1+deb11u1
- from 0, < 19.9.0-1+deb10u1
- from 0, < 20.1.0-1+deb11u1
- from 0, < 22.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N |