{
   "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" : "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" : "http://bugs.digium.com/view.php?id=10078",
            "refsource" : "CONFIRM",
            "url" : "http://bugs.digium.com/view.php?id=10078"
         },
         {
            "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" : "DSA-1563",
            "refsource" : "DEBIAN",
            "url" : "http://www.debian.org/security/2008/dsa-1563"
         },
         {
            "name" : "FEDORA-2008-3365",
            "refsource" : "FEDORA",
            "url" : "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html"
         },
         {
            "name" : "FEDORA-2008-3390",
            "refsource" : "FEDORA",
            "url" : "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html"
         },
         {
            "name" : "GLSA-200905-01",
            "refsource" : "GENTOO",
            "url" : "http://security.gentoo.org/glsa/glsa-200905-01.xml"
         },
         {
            "name" : "28901",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/28901"
         },
         {
            "name" : "34982",
            "refsource" : "SECUNIA",
            "url" : "http://secunia.com/advisories/34982"
         },
         {
            "name" : "ADV-2008-1324",
            "refsource" : "VUPEN",
            "url" : "http://www.vupen.com/english/advisories/2008/1324"
         },
         {
            "name" : "1019918",
            "refsource" : "SECTRACK",
            "url" : "http://www.securitytracker.com/id?1019918"
         },
         {
            "name" : "29927",
            "refsource" : "SECUNIA",
            "url" : "http://secunia.com/advisories/29927"
         },
         {
            "name" : "30010",
            "refsource" : "SECUNIA",
            "url" : "http://secunia.com/advisories/30010"
         },
         {
            "name" : "30042",
            "refsource" : "SECUNIA",
            "url" : "http://secunia.com/advisories/30042"
         },
         {
            "name" : "asterisk-iax2protocol-ack-dos(41966)",
            "refsource" : "XF",
            "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/41966"
         }
      ]
   }
}