==========================================================================
Ubuntu Security Notice USN-3928-1
April 01, 2019
dovecot vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
Dovecot could be made to crash or run programs as an administrator
if it opened a specially crafted file.
Software Description:
– dovecot: IMAP and POP3 email server
Details:
It was discovered that Dovecot incorrectly handled reading certain headers
from the index. A local attacker could possibly use this issue to escalate
privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
dovecot-core 1:2.3.2.1-1ubuntu3.2
Ubuntu 18.04 LTS:
dovecot-core 1:2.2.33.2-1ubuntu4.3
Ubuntu 16.04 LTS:
dovecot-core 1:2.2.22-1ubuntu2.10
Ubuntu 14.04 LTS:
dovecot-core 1:2.2.9-1ubuntu2.6
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3928-1
CVE-2019-7524
Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.2.1-1ubuntu3.2
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.33.2-1ubuntu4.3
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.10
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.6
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