{"vuid":"VU#228032","idnumber":"228032","name":"Asterisk null pointer dereference remote pre-authentication DoS vulnerability","keywords":["Asterisk","DoS","denial of service","null pointer."],"overview":"Asterisk contains a null pointer dereference vulnerability that may allow a remote, unauthenticated attacker to cause a denial-of-service condition on a vulnerable system.","clean_desc":"Asterisk is a popular PBX application with VoIP support. Asterisk contains a null pointer dereference vulnerability that can allow a remote, unauthenticated attacker to crash the Asterisk server software with a specially crafted Session Initiation Protocol (SIP) packet (typically udp/5060).","impact":"A remote, unauthenticated attacker may be able to cause a denial of service on a vulnerable server.","resolution":"Apply an update\nThis issue is addressed in Asterisk versions 1.4.1 and 1.2.16.","workarounds":"","sysaffected":"","thanks":"This vulnerability was reported by the Mu Security research team.","author":"This document was written by Will Dormann.","public":["http://asterisk.org/node/48320","http://asterisk.org/node/48319","http://secunia.com/advisories/24380/","http://labs.musecurity.com/advisories/MU-200703-01.txt","http://secunia.com/advisories/24427/","http://securitytracker.com/id?1017723","http://www.securityfocus.com/bid/22838"],"cveids":["CVE-2007-1306"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2007-03-05T20:24:17Z","publicdate":"2007-03-04T00:00:00Z","datefirstpublished":"2007-03-05T21:57:15Z","dateupdated":"2007-03-19T19:15:28Z","revision":13,"vrda_d1_directreport":"0","vrda_d1_population":"2","vrda_d1_impact":"3","cam_widelyknown":"20","cam_exploitation":"0","cam_internetinfrastructure":"11","cam_population":"15","cam_impact":"3","cam_easeofexploitation":"20","cam_attackeraccessrequired":"15","cam_scorecurrent":"7.846875","cam_scorecurrentwidelyknown":"7.846875","cam_scorecurrentwidelyknownexploited":"12.909375","ipprotocol":"","cvss_accessvector":"","cvss_accesscomplexity":"","cvss_authentication":null,"cvss_confidentialityimpact":"","cvss_integrityimpact":"","cvss_availabilityimpact":"","cvss_exploitablity":null,"cvss_remediationlevel":"","cvss_reportconfidence":"","cvss_collateraldamagepotential":"","cvss_targetdistribution":"","cvss_securityrequirementscr":"","cvss_securityrequirementsir":"","cvss_securityrequirementsar":"","cvss_basescore":"","cvss_basevector":"","cvss_temporalscore":"","cvss_environmentalscore":"","cvss_environmentalvector":"","metric":7.846875,"vulnote":null}