ircd-hybrid — security advisory

{
  "id": "4b9382c5a230baba29344587cfa53f3cb86a57ea3daf95a407b88b3bc0eacb02",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2009-4016",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2009-4016",
    "summary": "Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3) oftc-hybrid before 1.6.8, when flatten_links is disabled, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command.",
    "evidence": "osv:DEBIAN-CVE-2009-4016",
    "products": [
      {
        "name": {
          "value": "ircd-hybrid",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:7.2.2.dfsg.2-6.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ircd-hybrid",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:7.2.2.dfsg.2-6.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "DEBIAN-CVE-2009-4016",
      "aliases": [
        "DEBIAN-CVE-2009-4016"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:7.2.2.dfsg.2-6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "ircd-hybrid",
            "purl": "pkg:deb/debian/ircd-hybrid?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-4016.json"
          },
          "ecosystem_specific": {
            "urgency": "medium"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:7.2.2.dfsg.2-6.1"
                }
              ]
            }
          ],
          "package": {
            "name": "ircd-hybrid",
            "purl": "pkg:deb/debian/ircd-hybrid?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-4016.json"
          },
          "ecosystem_specific": {
            "urgency": "medium"
          }
        }
      ],
      "modified": "2026-10-23T17:47:35.591272710Z",
      "provider": "osv",
      "upstream": [
        "CVE-2009-4016"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2009-4016"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2009-4016",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 417817,
  "published_at": "2010-02-04T20:15:23.75+00:00"
}