The Nortel PC Client SIP Soft Phone 4.1 3.5.208[20051015] allows remote attackers to cause a denial of service (device crash) via a SIP message with a malformed header.Referenceshttp://www.securityfocus.com/bid/24536http://secunia.com/advisories/25782https://exchange.xforce.ibmcloud.com/vulnerabilities/35154http://www.vupen.com/english/advisories/2007/2319http://osvdb.org/37498http://www.sipera.com/index.php?action=resources%2Cthreat_advisory&tid=298&
