USN-781-1: Pidgin vulnerabilities

Ubuntu Security Notice USN-781-1

3rd June, 2009

pidgin vulnerabilities

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

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS

Software description

  • pidgin

Details

It was discovered that Pidgin did not properly handle certain malformed
messages when sending a file using the XMPP protocol handler. If a user
were tricked into sending a file, a remote attacker could send a specially
crafted response and cause Pidgin to crash, or possibly execute arbitrary
code with user privileges. (CVE-2009-1373)

It was discovered that Pidgin did not properly handle certain malformed
messages in the QQ protocol handler. A remote attacker could send a
specially crafted message and cause Pidgin to crash. This issue only
affected Ubuntu 8.10 and 9.04. (CVE-2009-1374)

It was discovered that Pidgin did not properly handle certain malformed
messages in the XMPP and Sametime protocol handlers. A remote attacker
could send a specially crafted message and cause Pidgin to crash.
(CVE-2009-1375)

It was discovered that Pidgin did not properly handle certain malformed
messages in the MSN protocol handler. A remote attacker could send a
specially crafted message and possibly execute arbitrary code with user
privileges. (CVE-2009-1376)

Update instructions

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

Ubuntu 9.04:
pidgin 1:2.5.5-1ubuntu8.1
Ubuntu 8.10:
pidgin 1:2.5.2-0ubuntu1.2
Ubuntu 8.04 LTS:
pidgin 1:2.4.1-1ubuntu2.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to restart Pidgin to effect
the necessary changes.

References

CVE-2009-1373, CVE-2009-1374, CVE-2009-1375, CVE-2009-1376