libnet-netmask-perl — security advisory

{
  "id": "5f859dfb5ed41c6994f5f190886bb50bb5e36659aa8220668fb03db94bab6703",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-29424",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-29424",
    "summary": "The Net::Netmask module before 2.0000 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.",
    "evidence": "osv:DEBIAN-CVE-2021-29424",
    "products": [
      {
        "name": {
          "value": "libnet-netmask-perl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9104-2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libnet-netmask-perl",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9104-2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libnet-netmask-perl",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9104-2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2021-29424",
      "aliases": [
        "DEBIAN-CVE-2021-29424"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.9104-2"
                }
              ]
            }
          ],
          "package": {
            "name": "libnet-netmask-perl",
            "purl": "pkg:deb/debian/libnet-netmask-perl?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-29424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.9104-2"
                }
              ]
            }
          ],
          "package": {
            "name": "libnet-netmask-perl",
            "purl": "pkg:deb/debian/libnet-netmask-perl?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-29424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.9104-2"
                }
              ]
            }
          ],
          "package": {
            "name": "libnet-netmask-perl",
            "purl": "pkg:deb/debian/libnet-netmask-perl?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-29424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:02:30.260660387Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-29424"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-29424"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-29424",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 419551,
  "published_at": "2021-04-06T16:15:16.567+00:00"
}