The smiley theme functionality in Gaim before 0.82 allows remote attackers to execute arbitrary commands via shell metacharacters in the filename of the tar file that is dragged to the smiley selector.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10008
https://exchange.xforce.ibmcloud.com/vulnerabilities/17144
http://www.redhat.com/support/errata/RHSA-2004-400.html
http://www.gentoo.org/security/en/glsa/glsa-200408-27.xml
http://www.fedoranews.org/updates/FEDORA-2004-279.shtml