Stack-based buffer overflow in (1) uTorrent 1.7.7 build 8179 and earlier and (2) BitTorrent 6.0.3 build 8642 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long Created By field in a .torrent file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44404
http://www.vupen.com/english/advisories/2008/2341
http://www.vupen.com/english/advisories/2008/2340
http://www.securitytracker.com/id?1020664
http://www.securityfocus.com/bid/30653
http://secunia.com/advisories/31445
http://secunia.com/advisories/31441
http://seclists.org/dailydave/2008/q3/0155.html
http://lists.immunitysec.com/pipermail/dailydave/attachments/20080811/35d6194b/attachment-0001.pdf