USN-4010-1: Exim vulnerability
exim4 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
Summary
Exim could be made to run commands if it received specially crafted network
traffic.
Software Description
- exim4 – Exim is a mail transport agent
Details
It was discovered that Exim incorrectly handled certain decoding
operations. A remote attacker could possibly use this issue to execute
arbitrary commands.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.10
- exim4-daemon-heavy – 4.91-6ubuntu1.1
- exim4-daemon-light – 4.91-6ubuntu1.1
- Ubuntu 18.04 LTS
- exim4-daemon-heavy – 4.90.1-1ubuntu1.2
- exim4-daemon-light – 4.90.1-1ubuntu1.2
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-4010-1: Exim vulnerability
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