USN-4366-1: Exim vulnerability
exim4 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
Summary
Exim could be made to access sensitive information or bypass
authentication if it received a specially crafted input.
Software Description
- exim4 – Exim is a mail transport agent
Details
It was discovered that Exim incorrectly handled certain inputs.
An remote attacker could possibly use this issue to access sensitive
information or authentication bypass.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 20.04 LTS
- exim4-base – 4.93-13ubuntu1.1
- exim4-daemon-heavy – 4.93-13ubuntu1.1
- exim4-daemon-light – 4.93-13ubuntu1.1
- Ubuntu 19.10
- exim4-base – 4.92.1-1ubuntu3.1
- exim4-daemon-heavy – 4.92.1-1ubuntu3.1
- exim4-daemon-light – 4.92.1-1ubuntu3.1
- Ubuntu 18.04 LTS
- exim4-base – 4.90.1-1ubuntu1.5
- exim4-daemon-heavy – 4.90.1-1ubuntu1.5
- exim4-daemon-light – 4.90.1-1ubuntu1.5
- Ubuntu 16.04 LTS
- exim4-base – 4.86.2-2ubuntu2.6
- exim4-daemon-heavy – 4.86.2-2ubuntu2.6
- exim4-daemon-light – 4.86.2-2ubuntu2.6
- Ubuntu 14.04 ESM
- exim4-base – 4.82-3ubuntu2.4+esm2
- exim4-daemon-heavy – 4.82-3ubuntu2.4+esm2
- exim4-daemon-light – 4.82-3ubuntu2.4+esm2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4366-1: Exim vulnerability
