========================================================================= Ubuntu Security Notice USN-4110-2 August 28, 2019 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 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4110-2 https://usn.ubuntu.com/4110-1 CVE-2019-11500