{"id":"CVE-2011-1507","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-1507","generatedAt":"2026-10-28T03:22:08.415Z","title":"Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces,…","description":"Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections.","published":"2011-04-27T00:55:05.000Z","lastModified":"2026-06-16T23:29:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-399"],"affected":["digium/asterisk"],"epss":{"score":0.02504,"percentile":0.84613,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.50%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://downloads.digium.com/pub/security/AST-2011-005.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html","source":"cve@mitre.org"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/44197","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/44529","source":"cve@mitre.org"},{"url":"http://securitytracker.com/id?1025432","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2011/dsa-2225","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/1086","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/1107","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/1188","source":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=698916","tags":["Patch"],"source":"cve@mitre.org"},{"url":"http://downloads.digium.com/pub/security/AST-2011-005.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/44197","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/44529","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://securitytracker.com/id?1025432","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2011/dsa-2225","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/1086","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/1107","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/1188","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=698916","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-1507","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}