Security advisory

{
  "id": "bfb32e1507ae3865c1aa45226394c3645dafc1677bb932fcec09b90974ce3131",
  "url": "https://osv.dev/vulnerability/CVE-2020-13529",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-13529",
    "summary": "An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.",
    "evidence": "osv:CVE-2020-13529",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-13529",
      "aliases": [
        "CVE-2020-13529"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/systemd/systemd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ea500ac513cf51bcb79a5666f1519499d029428f"
                },
                {
                  "last_affected": "ea500ac513cf51bcb79a5666f1519499d029428f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:systemd_project:systemd:245:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "245-NA"
                      },
                      {
                        "last_affected": "245-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "245-NA",
            "v245"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13529.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/systemd/systemd-stable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ea500ac513cf51bcb79a5666f1519499d029428f"
                },
                {
                  "last_affected": "ea500ac513cf51bcb79a5666f1519499d029428f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:systemd_project:systemd:245:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "245-NA"
                      },
                      {
                        "last_affected": "245-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "245-NA",
            "v245"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13529.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:40.506897249Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/",
        "https://security.gentoo.org/glsa/202107-48",
        "https://security.netapp.com/advisory/ntap-20210625-0005/",
        "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-13529",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434938,
  "published_at": "2021-05-10T16:15:07.373+00:00"
}