Buffer overflow in Yahoo Instant Messenger 5.6.0.1351 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long filename in the download feature.
https://exchange.xforce.ibmcloud.com/vulnerabilities/14171
http://www.securitytracker.com/id?1008651
http://www.securityfocus.com/bid/9383
http://secunia.com/advisories/10573
http://marc.info/?l=bugtraq&m=107357996802255&w=2
http://lists.grok.org.uk/pipermail/full-disclosure/2004-January/015334.html