USN-3961-1: Dovecot vulnerabilities
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
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.
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