{
  "modified": "2025-04-09T00:30:58Z",
  "published": "2007-07-31T10:17:00Z",
  "id": "CVE-2007-4103",
  "details": "The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://secunia.com/advisories/26274"
    },
    {
      "type": "ADVISORY",
      "url": "http://secunia.com/advisories/29051"
    },
    {
      "type": "ADVISORY",
      "url": "http://security.gentoo.org/glsa/glsa-200802-11.xml"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/archive/1/475069/100/0/threaded"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/bid/24950"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securitytracker.com/id?1018472"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.vupen.com/english/advisories/2007/2701"
    },
    {
      "type": "FIX",
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=185713"
    },
    {
      "type": "FIX",
      "url": "http://ftp.digium.com/pub/asa/ASA-2007-018.pdf"
    },
    {
      "type": "FIX",
      "url": "http://secunia.com/advisories/26274"
    },
    {
      "type": "REPORT",
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=185713"
    },
    {
      "type": "WEB",
      "url": "http://ftp.digium.com/pub/asa/ASA-2007-018.pdf"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/38197"
    },
    {
      "type": "WEB",
      "url": "http://securityreason.com/securityalert/2960"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/archive/1/475069/100/0/threaded"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/24950"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id?1018472"
    }
  ]
}