Vulnerability · Published Aug 10, 2023 · Assigned by mitre
CVE-2023-40225
High 7.2
In plain English
A high-severity security flaw in the haproxy package (AlmaLinux). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.2High
Exploit odds (30 days)2.1%top 17.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | haproxy | 2.4.22-3.el9_3 | ALSA-2024:1142 |
| Debian:12 | haproxy | 2.6.12-1+deb12u1 | DSA-5590-1 |
| Debian:12 | haproxy | 2.6.12-1+deb12u1 | DEBIAN-CVE-2023-40225 |
| Debian:13 | haproxy | 2.6.15-1 | DEBIAN-CVE-2023-40225 |
| Debian:14 | haproxy | 2.6.15-1 | DEBIAN-CVE-2023-40225 |
| Ubuntu:22.04:LTS | haproxy | 2.4.22-0ubuntu0.22.04.2 | USN-6294-1 |
| Ubuntu:22.04:LTS | haproxy | 2.4.22-0ubuntu0.22.04.2 | UBUNTU-CVE-2023-40225 |
Affected products (as reported)
References
- https://github.com/haproxy/haproxy/issues/2237
- https://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856
- https://www.haproxy.org/download/2.8/src/CHANGELOG
- https://www.haproxy.org/download/2.7/src/CHANGELOG
- https://www.haproxy.org/download/2.6/src/CHANGELOG
- https://cwe.mitre.org/data/definitions/436.html