6.4 - USN-2390-1

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

- Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Pidgin.

Software Description: - pidgin: graphical multi-protocol instant messaging client for X

Details:

Jacob Appelbaum and an anonymous person discovered that Pidgin incorrectly handled certificate validation. A remote attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. (CVE-2014-3694)

Yves Younan and Richard Johnson discovered that Pidgin incorrectly handled certain malformed MXit emoticons. A malicious remote server or a man in the middle could use this issue to cause Pidgin to crash, resulting in a denial of service. (CVE-2014-3695)

Yves Younan and Richard Johnson discovered that Pidgin incorrectly handled certain malformed Groupwise messages. A malicious remote server or a man in the middle could use this issue to cause Pidgin to crash, resulting in a denial of service. (CVE-2014-3696)

Thijs Alkemade and Paul Aurich discovered that Pidgin incorrectly handled memory when processing XMPP messages. A malicious remote server or user could use this issue to cause Pidgin to disclosure arbitrary memory, resulting in an information leak. (CVE-2014-3698)

Update instructions:

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

Ubuntu 14.10:
libpurple0 1:2.10.9-0ubuntu7.1
pidgin 1:2.10.9-0ubuntu7.1

Ubuntu 14.04 LTS:
libpurple0 1:2.10.9-0ubuntu3.2
pidgin 1:2.10.9-0ubuntu3.2

Ubuntu 12.04 LTS:
libpurple0 1:2.10.3-0ubuntu1.6
pidgin 1:2.10.3-0ubuntu1.6

After a standard system update you need to restart Pidgin to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2390-1
CVE-2014-3694, CVE-2014-3695, CVE-2014-3696, CVE-2014-3698

Package Information:
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.9-0ubuntu7.1
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.9-0ubuntu3.2
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.3-0ubuntu1.6