Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, aka “extraneous messaging.”
osvdb.org/38521
secunia.com/advisories/27252
securityreason.com/securityalert/3271
support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203
www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt
www.securityfocus.com/archive/1/482476/100/0/threaded
www.securityfocus.com/bid/26118
www.vupen.com/english/advisories/2007/3540
exchange.xforce.ibmcloud.com/vulnerabilities/37256