HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Haproxy | Haproxy | 2.9.0 (including) | 2.9.10 (excluding) |
| Haproxy | Haproxy | 3.0.0 (including) | 3.0.4 (excluding) |
| Haproxy | Haproxy | 3.1-dev0 (including) | 3.1-dev0 (including) |
| Haproxy | Haproxy | 3.1-dev1 (including) | 3.1-dev1 (including) |
| Haproxy | Haproxy | 3.1-dev2 (including) | 3.1-dev2 (including) |
| Haproxy | Haproxy | 3.1-dev3 (including) | 3.1-dev3 (including) |
| Haproxy | Haproxy | 3.1-dev4 (including) | 3.1-dev4 (including) |
| Haproxy | Haproxy | 3.1-dev5 (including) | 3.1-dev5 (including) |
| Haproxy | Ubuntu | devel | * |
| Haproxy | Ubuntu | upstream | * |
References
- http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=c725db17e8416ffb3c1537aea756356228ce5e3c
- http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=d636e515453320c6e122c313c661a8ac7d387c7f
- https://www.haproxy.org/
- https://www.haproxy.org/download/3.1/src/CHANGELOG
- https://www.mail-archive.com/haproxy%40formilux.org/msg45280.html
- https://www.mail-archive.com/haproxy%40formilux.org/msg45281.html