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Ubuntu Security Notice USN-2213-1

Ubuntu Security Notice USN-2213-1
Posted May 15, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2213-1 - It was discovered that Dovecot incorrectly handled closing inactive SSL/TLS connections. A remote attacker could use this issue to cause Dovecot to stop responding to new connections, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2014-3430
SHA-256 | e11d65530516edf471c037d15e12b497989180e21221b6dc72a4223832e170ed

Ubuntu Security Notice USN-2213-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2213-1
May 15, 2014

dovecot vulnerability
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Dovecot could be made to stop responding if it received specially crafted
network traffic.

Software Description:
- dovecot: IMAP and POP3 email server

Details:

It was discovered that Dovecot incorrectly handled closing inactive SSL/TLS
connections. A remote attacker could use this issue to cause Dovecot to
stop responding to new connections, resulting in a denial of service.

Update instructions:

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

Ubuntu 14.04 LTS:
dovecot-core 1:2.2.9-1ubuntu2.1
dovecot-imapd 1:2.2.9-1ubuntu2.1
dovecot-pop3d 1:2.2.9-1ubuntu2.1

Ubuntu 13.10:
dovecot-core 1:2.1.7-7ubuntu3.1
dovecot-imapd 1:2.1.7-7ubuntu3.1
dovecot-pop3d 1:2.1.7-7ubuntu3.1

Ubuntu 12.10:
dovecot-core 1:2.1.7-1ubuntu2.1
dovecot-imapd 1:2.1.7-1ubuntu2.1
dovecot-pop3d 1:2.1.7-1ubuntu2.1

Ubuntu 12.04 LTS:
dovecot-core 1:2.0.19-0ubuntu2.1
dovecot-imapd 1:2.0.19-0ubuntu2.1
dovecot-pop3d 1:2.0.19-0ubuntu2.1

Ubuntu 10.04 LTS:
dovecot-imapd 1:1.2.9-1ubuntu6.6
dovecot-pop3d 1:1.2.9-1ubuntu6.6

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

References:
http://www.ubuntu.com/usn/usn-2213-1
CVE-2014-3430

Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.1.7-7ubuntu3.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.1.7-1ubuntu2.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.0.19-0ubuntu2.1
https://launchpad.net/ubuntu/+source/dovecot/1:1.2.9-1ubuntu6.6
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