USN-3928-1: Dovecot vulnerability

USN-3928-1: Dovecot vulnerability

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

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.

References

• CVE-2019-7524

Source: USN-3928-1: Dovecot vulnerability