========================================================================== Ubuntu Security Notice USN-4110-4 August 28, 2019
dovecot regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: USN-4110-1 introduced a regression in Dovecot. Software Description: - dovecot: IMAP and POP3 email server Details: USN-4110-1 fixed a vulnerability in Dovecot. The update introduced a regression causing a wrong check. This update fixes the problem for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. We apologize for the inconvenience. 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+esm2 Ubuntu 12.04 ESM: dovecot-core 1:2.0.19-0ubuntu2.8 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4110-4 https://usn.ubuntu.com/4110-1 CVE-2019-11500
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