The Thomson ST 2030 SIP phone with software 1.52.1 allows remote attackers to cause a denial of service (device hang) via (1) an empty SIP message or (2) a SIP INVITE message with a malformed To header, different vectors than CVE-2007-4553.Referenceshttp://securityreason.com/securityalert/3104http://secunia.com/advisories/26587http://securitytracker.com/id?1018611http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065458.htmlhttp://securitytracker.com/id?1018616https://exchange.xforce.ibmcloud.com/vulnerabilities/36286http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065478.html
