{"id":"CVE-2009-0871","aliases":["EUVD-2009-0868","GHSA-v44g-p4wf-wh36"],"status":"published","title":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6...","description":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.","severity":{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02569,"percentile":0.85265,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2009-03-11T14:00:00Z","modified":"2026-06-16T23:06:00Z","products":[{"vendor":"digium","product":"asterisk"}],"references":[{"url":"http://osvdb.org/52568","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/34070","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch"]},{"url":"http://www.securitytracker.com/id?1021834","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/501656/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://bugs.digium.com/view.php?id=14417","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://bugs.digium.com/view.php?id=13547","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://downloads.digium.com/pub/security/AST-2009-002.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/0667","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://secunia.com/advisories/34229","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0871"},{"url":"https://github.com/advisories/GHSA-v44g-p4wf-wh36"}],"sources":{"cve":[{"id":"CVE-2009-0871","description":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.","status":"published","published":"2009-03-11T14:00:00Z","modified":"2024-08-07T04:48:52.606Z","updated_at":"2026-11-02T14:33:26.302774Z"}],"euvd":[{"id":"EUVD-2009-0868","description":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.","status":"published","published":"2009-03-11T14:00:00Z","modified":"2024-08-07T04:48:52Z","updated_at":"2026-11-03T01:39:24.312317Z"}],"ghsa":[{"id":"GHSA-v44g-p4wf-wh36","title":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6...","description":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.","status":"published","published":"2022-05-02T03:19:01Z","modified":"2023-01-31T05:07:44Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:16.045862Z"}],"nvd":[{"id":"CVE-2009-0871","description":"The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.","status":"published","published":"2009-03-11T14:19:15.42Z","modified":"2026-06-16T23:06:00.17Z","cvss":[{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:34.44527Z"}]}}