USN-3322-1: Exim vulnerability

Releases

• Ubuntu 17.04
• Ubuntu 16.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• exim4 - Exim is a mail transport agent

Details

It was discovered that Exim did not properly deallocate memory when
processing certain command line arguments. A local attacker could use this
in conjunction with a vulnerability in the underlying kernel to possibly
execute arbitrary code and gain administrative privileges.

Update instructions

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

Ubuntu 17.04

• exim4-daemon-heavy - 4.88-5ubuntu1.1
• exim4-daemon-light - 4.88-5ubuntu1.1

Ubuntu 16.10

• exim4-daemon-heavy - 4.87-3ubuntu1.2
• exim4-daemon-light - 4.87-3ubuntu1.2

Ubuntu 16.04

• exim4-daemon-heavy - 4.86.2-2ubuntu2.2
• exim4-daemon-light - 4.86.2-2ubuntu2.2

Ubuntu 14.04

• exim4-daemon-heavy - 4.82-3ubuntu2.3
• exim4-daemon-light - 4.82-3ubuntu2.3

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

References

• CVE-2017-1000369