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-core1:2.3.2.1-1ubuntu3.2
Ubuntu 18.04 LTS
dovecot-core1:2.2.33.2-1ubuntu4.3
Ubuntu 16.04 LTS
dovecot-core1:2.2.22-1ubuntu2.10
Ubuntu 14.04 LTS
dovecot-core1:2.2.9-1ubuntu2.6

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

Source: USN-3928-1: Dovecot vulnerability

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