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A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923."}, {"lang": "es", "value": "El driver del canal IAX2 (chan_iax2) en Asterisk Open Source 1.0.x, 1.2.x anteriores a 1.2.28 y 1.4.x anteriores a 1.4.19.1; Business Edition A.x.x, B.x.x anteriores a B.2.5.2 y C.x.x anteriores a C.1.8.1; AsteriskNOW anteriores a 1.0.3; Apliance Developer Kit 0.x.x y s800i anterior a la 1.1.0.3, cuando est\u00e1 configurado para permitir llamadas no autenticadas, no verifica que una respuesta ACK contenga un n\u00famero que coincida con el de respuesta del servidor a un NUEVO mensaje, que puede permitir a los atacantes provocar una denegaci\u00f3n de servicio (amplificaci\u00f3n del tr\u00e1fico) a trav\u00e9s de una respuesta ACK falseada, que no complete la negociaci\u00f3n de 3 pasos. NOTA: Este problema existe debido a una correci\u00f3n incompleto para CVE-2008-1923"}], "id": "CVE-2008-1897", "lastModified": "2026-04-23T00:35:47.467", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2008-04-23T16:05:00.000", "references": [{"source": "cve@mitre.org", "url": "http://bugs.digium.com/view.php?id=10078"}, {"source": "cve@mitre.org", "url": "http://downloads.digium.com/pub/security/AST-2008-006.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/29927"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/30010"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/30042"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/34982"}, {"source": "cve@mitre.org", "url": "http://security.gentoo.org/glsa/glsa-200905-01.xml"}, {"source": "cve@mitre.org", "url": "http://www.altsci.com/concepts/page.php?s=asteri&p=2"}, {"source": "cve@mitre.org", "url": "http://www.debian.org/security/2008/dsa-1563"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/archive/1/491220/100/0/threaded"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/28901"}, {"source": "cve@mitre.org", "url": "http://www.securitytracker.com/id?1019918"}, {"source": "cve@mitre.org", "url": "http://www.vupen.com/english/advisories/2008/1324"}, {"source": "cve@mitre.org", "url": "https://downloads.asterisk.org/pub/security/AST-2008-006.html"}, {"source": "cve@mitre.org", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41966"}, {"source": "cve@mitre.org", "url": "https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e"}, {"source": "cve@mitre.org", "url": "https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90"}, {"source": "cve@mitre.org", "url": "https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2"}, {"source": "cve@mitre.org", "url": "https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb"}, {"source": "cve@mitre.org", "url": "https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653"}, {"source": "cve@mitre.org", "url": "https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b"}, {"source": "cve@mitre.org", "url": "https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6"}, {"source": "cve@mitre.org", "url": "https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7"}, {"source": "cve@mitre.org", "url": "https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a"}, {"source": "cve@mitre.org", "url": "https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83"}, {"source": "cve@mitre.org", "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html"}, {"source": "cve@mitre.org", "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://bugs.digium.com/view.php?id=10078"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://downloads.digium.com/pub/security/AST-2008-006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/29927"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/30010"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/30042"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/34982"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://security.gentoo.org/glsa/glsa-200905-01.xml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.altsci.com/concepts/page.php?s=asteri&p=2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2008/dsa-1563"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/archive/1/491220/100/0/threaded"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/28901"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id?1019918"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.vupen.com/english/advisories/2008/1324"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://downloads.asterisk.org/pub/security/AST-2008-006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41966"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "asterisk: 3-way handshake in IAX2 incomplete (CVE-2008-1923)", "id": "443761", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=443761"}, "csaw": false, "details": ["The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923."], "name": "CVE-2008-1897", "public_date": "2008-04-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2008-1897"]}

{}