1. Ubuntu Security Notices
  2. USN-6455-1

USN-6455-1: Exim vulnerabilities

Publication date

26 October 2023

Overview

Several security issues were fixed in Exim.

Releases

Packages

  • exim4 - Exim is a mail transport agent

Details

It was discovered that Exim incorrectly handled validation of user-supplied
data, which could lead to memory corruption. A remote attacker could
possibly use this issue to execute arbitrary code. (CVE-2023-42117)

It was discovered that Exim incorrectly handled validation of user-supplied
data, which could lead to an out-of-bounds read. An attacker could possibly
use this issue to expose sensitive information. (CVE-2023-42119)

It was discovered that Exim incorrectly handled validation of user-supplied
data, which could lead to memory corruption. A remote attacker could
possibly use this issue to execute arbitrary code. (CVE-2023-42117)

It was discovered that Exim incorrectly handled validation of user-supplied
data, which could lead to an out-of-bounds read. An attacker could possibly
use this issue to expose sensitive information. (CVE-2023-42119)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic exim4-daemon-heavy –  4.96-17ubuntu2.1
exim4-daemon-light –  4.96-17ubuntu2.1
23.04 lunar exim4-daemon-heavy –  4.96-14ubuntu1.3
exim4-daemon-light –  4.96-14ubuntu1.3
22.04 jammy exim4-daemon-heavy –  4.95-4ubuntu2.4
exim4-daemon-light –  4.95-4ubuntu2.4
20.04 focal exim4-daemon-heavy –  4.93-13ubuntu1.9
exim4-daemon-light –  4.93-13ubuntu1.9
18.04 bionic exim4-daemon-heavy –  4.90.1-1ubuntu1.10+esm2  
exim4-daemon-light –  4.90.1-1ubuntu1.10+esm2  
16.04 xenial exim4-daemon-heavy –  4.86.2-2ubuntu2.6+esm5  
exim4-daemon-light –  4.86.2-2ubuntu2.6+esm5  
14.04 trusty exim4-daemon-heavy –  4.82-3ubuntu2.4+esm7  
exim4-daemon-light –  4.82-3ubuntu2.4+esm7  

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References

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