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USN-3995-2: Keepalived vulnerability

28 May 2019

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



  • 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

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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


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