USN-5063-1: HAProxy vulnerabilities

Releases

• Ubuntu 21.04
• Ubuntu 20.04 LTS

Packages

• haproxy - fast and reliable load balancing reverse proxy

Details

Ori Hollander discovered that HAProxy incorrectly handled HTTP header name
length encoding. A remote attacker could possibly use this issue to inject
a duplicate content-length header and perform request smuggling attacks.

Update instructions

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

Ubuntu 21.04

• haproxy - 2.2.9-1ubuntu0.2

Ubuntu 20.04

• haproxy - 2.0.13-2ubuntu0.3

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

References

• CVE-2021-40346