USN-2390-1: Pidgin vulnerabilities

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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 machine-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
machine-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
machine-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

• libpurple0 - 1:2.10.9-0ubuntu3.2
• pidgin - 1:2.10.9-0ubuntu3.2

Ubuntu 12.04

• 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

• CVE-2014-3694
• CVE-2014-3695
• CVE-2014-3696
• CVE-2014-3698