Ubuntu Security Notice USN-3995-2

Ubuntu Security Notice USN-3995-2
May 28, 2019

keepalived vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM


Keepalived could be made to crash or run programs if it received
specially crafted network traffic.

Software Description:
– keepalived: Failover and monitoring daemon for LVS clusters


USN-3995-1 fixed a vulnerability in keepalived. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that Keepalived incorrectly handled certain HTTP
status response codes. A remote attacker could use this issue to cause
Keepalived to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 ESM:
keepalived 1:1.2.7-1ubuntu1+esm1

Ubuntu 12.04 ESM:
keepalived 1:1.2.2-3ubuntu1.2

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