{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2008-1897",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "GLSA-200905-01",
                "refsource": "GENTOO",
                "url": "http://security.gentoo.org/glsa/glsa-200905-01.xml"
            },
            {
                "name": "29927",
                "refsource": "SECUNIA",
                "url": "http://secunia.com/advisories/29927"
            },
            {
                "name": "asterisk-iax2protocol-ack-dos(41966)",
                "refsource": "XF",
                "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41966"
            },
            {
                "name": "28901",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/28901"
            },
            {
                "name": "30010",
                "refsource": "SECUNIA",
                "url": "http://secunia.com/advisories/30010"
            },
            {
                "name": "ADV-2008-1324",
                "refsource": "VUPEN",
                "url": "http://www.vupen.com/english/advisories/2008/1324"
            },
            {
                "name": "http://downloads.digium.com/pub/security/AST-2008-006.html",
                "refsource": "CONFIRM",
                "url": "http://downloads.digium.com/pub/security/AST-2008-006.html"
            },
            {
                "name": "http://bugs.digium.com/view.php?id=10078",
                "refsource": "CONFIRM",
                "url": "http://bugs.digium.com/view.php?id=10078"
            },
            {
                "name": "FEDORA-2008-3390",
                "refsource": "FEDORA",
                "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html"
            },
            {
                "name": "20080422 AST-2008-006 - 3-way handshake in IAX2 incomplete",
                "refsource": "BUGTRAQ",
                "url": "http://www.securityfocus.com/archive/1/491220/100/0/threaded"
            },
            {
                "name": "http://www.altsci.com/concepts/page.php?s=asteri&p=2",
                "refsource": "MISC",
                "url": "http://www.altsci.com/concepts/page.php?s=asteri&p=2"
            },
            {
                "name": "30042",
                "refsource": "SECUNIA",
                "url": "http://secunia.com/advisories/30042"
            },
            {
                "name": "DSA-1563",
                "refsource": "DEBIAN",
                "url": "http://www.debian.org/security/2008/dsa-1563"
            },
            {
                "name": "34982",
                "refsource": "SECUNIA",
                "url": "http://secunia.com/advisories/34982"
            },
            {
                "name": "1019918",
                "refsource": "SECTRACK",
                "url": "http://www.securitytracker.com/id?1019918"
            },
            {
                "name": "FEDORA-2008-3365",
                "refsource": "FEDORA",
                "url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html"
            },
            {
                "refsource": "MISC",
                "name": "https://downloads.asterisk.org/pub/security/AST-2008-006.html",
                "url": "https://downloads.asterisk.org/pub/security/AST-2008-006.html"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83",
                "url": "https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2",
                "url": "https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a",
                "url": "https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90",
                "url": "https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6",
                "url": "https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e",
                "url": "https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b",
                "url": "https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7",
                "url": "https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb",
                "url": "https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653",
                "url": "https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://downloads.asterisk.org/pub/security/AST-2008-006.html",
                "url": "https://downloads.asterisk.org/pub/security/AST-2008-006.html"
            }
        ]
    }
}