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CVE-2021-40346

Published: 7 September 2021

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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
haproxy
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal
Released (2.0.13-2ubuntu0.3)
hirsute
Released (2.2.9-1ubuntu0.2)
impish
Released (2.2.9-2ubuntu2)
jammy
Released (2.2.9-2ubuntu2)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code not present)