For users of the awesome instant messaging client Pidgin, you should have a look at this and update your libpurple library when possible.
Just download and install the latest version of Pidgin. It will automatically upgrade your current version.
US-CERT Emailed today:
Pidgin has released a security advisory to address a vulnerability affecting libpurple. This vulnerability is a buffer overflow that may allow an attacker to execute arbitrary code. Libpurple is used by multiple instant messenger (IM) programs including Adium and Pidgin.
IM applications that use libpurple may distribute it as a part of their security updates. Users are encouraged to update affected IM software as soon as possible. A partial listing of IM programs that implement libpurple can be found in the “What is libpurple?” webpage on the Pidgin website. Additional information may be found in the US-CERT Vulnerability Notes Database.
