USN-5188-1: Keepalived vulnerability

Releases

• Ubuntu 21.10
• Ubuntu 21.04
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• keepalived - Failover and monitoring daemon for LVS clusters

Details

It was discovered that Keepalived incorrectly handled certain messages.
An attacker could possibly use this issue to access-control bypass.

Update instructions

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

Ubuntu 21.10

• keepalived - 1:2.1.5-0.2ubuntu1.1

Ubuntu 21.04

• keepalived - 1:2.1.5-0.2ubuntu0.1

Ubuntu 20.04

• keepalived - 1:2.0.19-2ubuntu0.1

Ubuntu 18.04

• keepalived - 1:1.3.9-1ubuntu0.18.04.3

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

References

• CVE-2021-44225