Ubuntu 24.04 LTS USN-6790-1 Critical Amavisd-New Bypass Issue

ubuntu

May 28, 2024

amavisd-new could be made to bypass security measures.

Summary

amavisd-new could be made to bypass security measures.

Software Description:

- amavisd-new: Interface between MTA and virus scanner/content filters

Details:

It was discovered that amavisd-new incorrectly handled certain MIME email

messages with multiple boundary parameters. A remote attacker could

possibly use this issue to bypass checks for banned files or malware.

Topics Covered

security advisory Ubuntu critical severity amavisd-new bypass issue

Update Instructions

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

Ubuntu 24.04 LTS
   amavisd-new                     1:2.13.0-3ubuntu2

Ubuntu 23.10
   amavisd-new                     1:2.13.0-3ubuntu1.1

Ubuntu 22.04 LTS
   amavisd-new                     1:2.12.2-1ubuntu1.1

Ubuntu 20.04 LTS
   amavisd-new                     1:2.11.0-6.1ubuntu1.1

After a standard system update you need to reboot your computer to make all
the necessary changes.