Ubuntu Security Notice 5042-1 - It was discovered that HAProxy incorrectly handled the HTTP/2 protocol. A remote attacker could possibly use this issue to bypass restrictions.
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Ubuntu Security Notice USN-5042-1
August 17, 2021
haproxy vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in HAProxy.
Software Description:
- haproxy: fast and reliable load balancing reverse proxy
Details:
It was discovered that HAProxy incorrectly handled the HTTP/2 protocol. A
remote attacker could possibly use this issue to bypass restrictions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.04:
haproxy 2.2.9-1ubuntu0.1
Ubuntu 20.04 LTS:
haproxy 2.0.13-2ubuntu0.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5042-1
https://launchpad.net/bugs/1940314
Package Information:
https://launchpad.net/ubuntu/+source/haproxy/2.2.9-1ubuntu0.1
https://launchpad.net/ubuntu/+source/haproxy/2.0.13-2ubuntu0.2