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bind9 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2007-2926

ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or sending NOTIFY messages to slave name servers, which makes it easier for remote attackers to guess the next query id and perform DNS cache poisoning.

Products
bind9
Affected versions
Not specified
Fixed versions
1:9.4.1-P1-1
CVEs
CVE-2007-2926
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 15:47 UTC · Revision 1

Source evidence

DEBIAN-CVE-2007-2926

core-osv · Original source

Published 24 Jul 2007, 17:30 UTC

ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or sending NOTIFY messages to slave name servers, which makes it easier for remote attackers to guess the next query id and perform DNS cache poisoning.

osv:DEBIAN-CVE-2007-2926

bind9

Fixed versions: 1:9.4.1-P1-1

bind9

Fixed versions: 1:9.4.1-P1-1

bind9

Fixed versions: 1:9.4.1-P1-1

Complete source record
{
  "id": "ca59905e1d5dd5133063095cdaa333ecc3c840f234347f51bd174ff0515ab9c2",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2007-2926",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2007-2926",
    "summary": "ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or sending NOTIFY messages to slave name servers, which makes it easier for remote attackers to guess the next query id and perform DNS cache poisoning.",
    "evidence": "osv:DEBIAN-CVE-2007-2926",
    "products": [
      {
        "name": {
          "value": "bind9",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:9.4.1-P1-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "bind9",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:9.4.1-P1-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "bind9",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:9.4.1-P1-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "DEBIAN-CVE-2007-2926",
      "aliases": [
        "DEBIAN-CVE-2007-2926"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:9.4.1-P1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "bind9",
            "purl": "pkg:deb/debian/bind9?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-2926.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:9.4.1-P1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "bind9",
            "purl": "pkg:deb/debian/bind9?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-2926.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:9.4.1-P1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "bind9",
            "purl": "pkg:deb/debian/bind9?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-2926.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-21T17:47:40.492950925Z",
      "provider": "osv",
      "upstream": [
        "CVE-2007-2926"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2007-2926"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2007-2926",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 398460,
  "published_at": "2007-07-24T17:30:00+00:00"
}