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Ubuntu 16.04 LTS & 16.10 USN-3258-1 Dovecot Crash Issue

ubuntu
Calendar Grey April 10, 2017
Dist Ubuntu Esm H88
Postfix on Debian could face vulnerabilities due to malformed input, leading to service interruptions. Upgrade immediately for protection.
Dovecot could be made to crash if it received specially crafted input.

Summary

Dovecot could be made to crash if it received specially crafted input.

Software Description:

- dovecot: IMAP and POP3 email server

Details:

It was discovered that Dovecot incorrectly handled some usernames. An attacker

could possibly use this issue to cause Dovecot to hang or crash, resulting in a

denial of service.

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu dovecot

Update Instructions

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

Ubuntu 16.10:
  dovecot-core                    1:2.2.24-1ubuntu1.2

Ubuntu 16.04 LTS:
  dovecot-core                    1:2.2.22-1ubuntu2.3

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

References

https://ubuntu.com/security/notices/USN-3258-1

CVE-2017-2669

Severity
important
Lowest
Low
Medium
High
Critical

April 10, 2017

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu dovecot

Package Information

https://launchpad.net/ubuntu/+source/dovecot/1:2.2.24-1ubuntu1.2
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.3

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