========================================================================== Ubuntu Security Notice USN-3961-1 April 30, 2019
dovecot vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.04 - Ubuntu 18.10 Summary: Dovecot could be made to crash if it received specially crafted network traffic. Software Description: - dovecot: IMAP and POP3 email server Details: It was discovered that the Dovecot Submission login service incorrectly handled certain operations. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: dovecot-core 1:2.3.4.1-1ubuntu2.2 dovecot-submissiond 1:2.3.4.1-1ubuntu2.2 Ubuntu 18.10: dovecot-core 1:2.3.2.1-1ubuntu3.4 dovecot-submissiond 1:2.3.2.1-1ubuntu3.4 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3961-1 CVE-2019-11494, CVE-2019-11499 Package Information: https://launchpad.net/ubuntu/+source/dovecot/1:2.3.4.1-1ubuntu2.2 https://launchpad.net/ubuntu/+source/dovecot/1:2.3.2.1-1ubuntu3.4
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