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net-snmp — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2008-6123

The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion."

Products
net-snmp
Affected versions
Not specified
Fixed versions
5.4.3~dfsg-1
CVEs
CVE-2008-6123
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 23:03 UTC · Revision 1

Source evidence

DEBIAN-CVE-2008-6123

core-osv · Original source

Published 12 Feb 2009, 16:30 UTC

The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion."

osv:DEBIAN-CVE-2008-6123

net-snmp

Fixed versions: 5.4.3~dfsg-1

net-snmp

Fixed versions: 5.4.3~dfsg-1

net-snmp

Fixed versions: 5.4.3~dfsg-1

Complete source record
{
  "id": "802666d8b0c0de6cbaee1d9ac68be048973a256c608009e015fc7db6909558eb",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2008-6123",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2008-6123",
    "summary": "The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to \"source/destination IP address confusion.\"",
    "evidence": "osv:DEBIAN-CVE-2008-6123",
    "products": [
      {
        "name": {
          "value": "net-snmp",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.3~dfsg-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "net-snmp",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.3~dfsg-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "net-snmp",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.3~dfsg-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "DEBIAN-CVE-2008-6123",
      "aliases": [
        "DEBIAN-CVE-2008-6123"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.4.3~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "net-snmp",
            "purl": "pkg:deb/debian/net-snmp?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.4.3~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "net-snmp",
            "purl": "pkg:deb/debian/net-snmp?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.4.3~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "net-snmp",
            "purl": "pkg:deb/debian/net-snmp?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-6123.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        }
      ],
      "modified": "2026-10-23T17:47:33.560614433Z",
      "provider": "osv",
      "upstream": [
        "CVE-2008-6123"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2008-6123"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2008-6123",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 417617,
  "published_at": "2009-02-12T16:30:00.187+00:00"
}