USN-5869-1: HAProxy vulnerability

Releases

• Ubuntu 22.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• haproxy - fast and reliable load balancing reverse proxy

Details

Bahruz Jabiyev, Anthony Gavazzi, Engin Kirda, Kaan Onarlioglu, Adi Peleg,
and Harvey Tuch discovered that HAProxy incorrectly handled empty header
names. A remote attacker could possibly use this issue to manipulate
headers and bypass certain authentication checks and restrictions.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 22.10

• haproxy - 2.4.18-1ubuntu1.2

Ubuntu 22.04

• haproxy - 2.4.18-0ubuntu1.2

Ubuntu 20.04

• haproxy - 2.0.29-0ubuntu1.3

Ubuntu 18.04

• haproxy - 1.8.8-1ubuntu0.13

In general, a standard system update will make all the necessary changes.

References

• CVE-2023-25725