CVE-2021-39242

Summary:

An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.

Reference Links(if available):

https://www.mail-archive.com/[email protected]/msg41041.html

https://git.haproxy.org/?p=haproxy.git;a=commit;h=b5d2b9e154d78e4075db163826c5e0f6d31b2ab1

https://www.debian.org/security/2021/dsa-4960

CVSS Score (if available)

v2: / MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Links to Exploits(if available)