Buffer overflow in the MSN protocol handler for gaim 0.79 to 1.0.1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via an "unexpected sequence of MSNSLP messages" that results in an unbounded copy operation that writes to the wrong buffer.
https://www.ubuntu.com/usn/usn-8-1/
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11790
https://exchange.xforce.ibmcloud.com/vulnerabilities/17790
https://exchange.xforce.ibmcloud.com/vulnerabilities/17787
https://exchange.xforce.ibmcloud.com/vulnerabilities/17786
https://bugzilla.fedora.us/show_bug.cgi?id=2188
http://www.redhat.com/support/errata/RHSA-2004-604.html