USN-4110-2: Dovecot vulnerability

USN-4110-2: Dovecot vulnerability

dovecot vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 14.04 ESM
• Ubuntu 12.04 ESM

Summary

Dovecot could be made to crash or execute arbitrary code if it received
a specially crafted data.

Software Description

• dovecot – IMAP and POP3 email server

Details

USN-4110-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly
handled certain data. An attacker could possibly use this issue
to cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 14.04 ESM

dovecot-core – 1:2.2.9-1ubuntu2.6+esm1

Ubuntu 12.04 ESM

dovecot-core – 1:2.0.19-0ubuntu2.7

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

• USN-4110-1
• CVE-2019-11500

Source: USN-4110-2: Dovecot vulnerability