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Ubuntu 19.04 LTS USN-4110-3 Critical: Dovecot Regression Issue

ubuntu
Calendar Grey August 28, 2019
Dist Ubuntu Esm H88
Postfix vulnerability addressed in Ubuntu Security Notice USN-4120-2. Updating is advised to maintain system integrity and performance.
USN-4110-1 introduced a regression in Dovecot.

Summary

USN-4110-1 introduced a regression in Dovecot.

Software Description:

- dovecot: IMAP and POP3 email server

Details:

USN-4110-1 fixed a vulnerability in Dovecot. The update introduced a

regression causing a wrong check. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly

handled certain data. An attacker could possibly use this issue

to cause a denial of service or execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service security issue software update arbitrary code execution ubuntu dovecot

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
  dovecot-core                    1:2.3.4.1-1ubuntu2.4

Ubuntu 18.04 LTS:
  dovecot-core                    1:2.2.33.2-1ubuntu4.5

Ubuntu 16.04 LTS:
  dovecot-core                    1:2.2.22-1ubuntu2.12

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4110-3

https://ubuntu.com/security/notices/USN-4110-1

CVE-2019-11500

Severity
critical
Lowest
Low
Medium
High
Critical

August 28, 2019

Topics%20covered

Topics Covered

security advisory denial of service security issue software update arbitrary code execution ubuntu dovecot

Package Information

https://launchpad.net/ubuntu/+source/dovecot/1:2.3.4.1-1ubuntu2.4
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.33.2-1ubuntu4.5
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.12

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