haproxy: An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP requ...
CVE-2021-40346 is fixed in 2 products on 1 platform, first by haproxy 2.0.13-2ubuntu0.3, released September 7, 2021. It is not reported as exploited. Patch Radar priority: Routine.
An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| haproxy · Ubuntu 20.04 LTS (focal) | 2.0.13-2ubuntu0.3 | haproxy 2.0.13-2ubuntu0.3 | Sep 7, 2021 |
| haproxy · Ubuntu 22.04.1 LTS (jammy) | 2.2.9-2ubuntu2 | haproxy 2.2.9-2ubuntu2 | Sep 7, 2021 |
| vim-haproxy · Ubuntu 20.04 LTS (focal) | 2.0.13-2ubuntu0.3 | vim-haproxy 2.0.13-2ubuntu0.3 | Sep 7, 2021 |
| vim-haproxy · Ubuntu 22.04.1 LTS (jammy) | 2.2.9-2ubuntu2 | vim-haproxy 2.2.9-2ubuntu2 | Sep 7, 2021 |
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