CVE-2023-40225
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.
| Software | From | Fixed in |
|---|---|---|
| haproxy / haproxy | - | 2.0.32.x |
| haproxy / haproxy | 2.4.0 | 2.4.23.x |
| haproxy / haproxy | 2.2.0 | 2.2.30.x |
| haproxy / haproxy | 2.8.0 | 2.8.2 |
| haproxy / haproxy | 2.7.0 | 2.7.10 |
| haproxy / haproxy | 2.5.0 | 2.6.15 |
- https://cwe.mitre.org/data/definitions/436.html
- https://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856
- https://github.com/haproxy/haproxy/issues/2237
- https://www.haproxy.org/download/2.6/src/CHANGELOG
- https://www.haproxy.org/download/2.7/src/CHANGELOG
- https://www.haproxy.org/download/2.8/src/CHANGELOG
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