Ubuntu Security Notice USN-902-1
22nd February, 2010
pidgin vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.10
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
Software description
- pidgin
Details
Fabian Yamaguchi discovered that Pidgin incorrectly validated all fields of
an incoming message in the MSN protocol handler. A remote attacker could
send a specially crafted message and cause Pidgin to crash, leading to a
denial of service. (CVE-2010-0277)
Sadrul Habib Chowdhury discovered that Pidgin incorrectly handled certain
nicknames in Finch group chat rooms. A remote attacker could use a
specially crafted nickname and cause Pidgin to crash, leading to a denial
of service. (CVE-2010-0420)
Antti Hayrynen discovered that Pidgin incorrectly handled large numbers of
smileys. A remote attacker could send a specially crafted message and cause
Pidgin to become unresponsive, leading to a denial of service.
(CVE-2010-0423)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.10:
- pidgin 1:2.6.2-1ubuntu7.2
- Ubuntu 9.04:
- pidgin 1:2.5.5-1ubuntu8.6
- Ubuntu 8.10:
- pidgin 1:2.5.2-0ubuntu1.7
- Ubuntu 8.04 LTS:
- pidgin 1:2.4.1-1ubuntu2.9
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.