CVE-2023-40225
haproxy - security update
7.2
HIGH
CVSS 3.1
EPSS 0.09%
Description
HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.
How to fix CVE-2023-40225
To remediate CVE-2023-40225, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.33 or later
- —upgrade to 2.2.9-2+deb11u6 or later
- —upgrade to 2.2.9-2+deb11u6 or later
Is CVE-2023-40225 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.0.33, >= 2.2.0, < 2.2.31, >= 2.4.0, < 2.4.24, >= 2.5.0, < 2.6.15, >= 2.7.0, < 2.7.10, >= 2.8.0, < 2.8.2
- from 0, < 2.2.9-2+deb11u6
- from 0, < 2.2.9-2+deb11u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |