{"id":"CVE-2009-2726","state":"PUBLISHED","title":"The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; Asterisk Business Edition A.x.x, B.x","description":"The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; Asterisk Business Edition A.x.x, B.x.x before B.2.5.9, C.2.x before C.2.4.1, and C.3.x before C.3.1; and Asterisk Appliance s800i 1.2.x before 1.3.0.3 does not use a maximum width when invoking sscanf style functions, which allows remote attackers to cause a denial of service (stack memory consumption) via SIP packets containing large sequences of ASCII decimal characters, as demonstrated via vectors related to (1) the CSeq value in a SIP header, (2) large Content-Length value, and (3) SDP.","publishedAt":"2009-08-12T10:00:00.000Z","updatedAt":"2024-08-07T05:59:57.107Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://labs.mudynamics.com/advisories/MU-200908-01.txt","http://www.vupen.com/english/advisories/2009/2229","http://downloads.digium.com/pub/security/AST-2009-005.html","http://www.securityfocus.com/bid/36015","http://www.securityfocus.com/archive/1/505669/100/0/threaded","http://www.securitytracker.com/id?1022705","http://secunia.com/advisories/36227"],"weaknesses":[],"ingestedAt":"2026-10-29T19:39:19.962Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2009/2xxx/CVE-2009-2726.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2009-2726","state":"PUBLISHED","datePublished":"2009-08-12T10:00:00.000Z","dateUpdated":"2024-08-07T05:59:57.107Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2009-08-10T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; 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