Exim could be made to run commands if it received specially crafted network traffic.
Ubuntu Security Notice USN-4010-1
June 05, 2019
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
Exim could be made to run commands if it received specially crafted network
- exim4: Exim is a mail transport agent
It was discovered that Exim incorrectly handled certain decoding
operations. A remote attacker could possibly use this issue to execute
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.