USN-3565-1: Exim vulnerability

12 February 2018

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



  • exim4 - Exim is a mail transport agent


Meh Chang discovered that Exim incorrectly handled memory in certain
decoding operations. A remote attacker could use this issue to cause Exim
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 17.10
Ubuntu 16.04
Ubuntu 14.04

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