Security advisory

{
  "id": "2599e6cc749b4822ba4454b61a3cb9c2324a0873467a6ce0c01c1e66c44a9a61",
  "url": "https://osv.dev/vulnerability/CVE-2020-35766",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-35766",
    "summary": "The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the \"A number of self-test programs are included here for unit-testing the library\" situation.",
    "evidence": "osv:CVE-2020-35766",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-35766",
      "aliases": [
        "CVE-2020-35766"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/trusteddomainproject/opendkim",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "cf1b96054c9d1e395417eda46b6038a1ab7a904f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:opendkim:opendkim:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.10.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rel-opendkim-2-10-3",
            "rel-opendkim-2-10-2",
            "rel-opendkim-2-10-1",
            "rel-opendkim-2-10-0",
            "rel-opendkim-2-10-0-Beta2",
            "rel-opendkim-2-10-0-Beta1",
            "rel-opendkim-2-10-0-Beta0",
            "rel-opendkim-2-9-2",
            "rel-opendkim-2-9-2-Beta0",
            "rel-opendkim-2-9-1",
            "rel-opendkim-2-9-1-Beta4",
            "rel-opendkim-2-9-1-Beta3",
            "rel-opendkim-2-9-1-Beta2",
            "rel-opendkim-2-9-1-Beta1",
            "rel-opendkim-2-9-1-Beta0",
            "rel-opendkim-2-9-0",
            "rel-opendkim-2-9-0-Beta2",
            "rel-opendkim-2-9-0-Beta1",
            "rel-opendkim-2-9-0-Beta0",
            "rel-opendkim-2-8-4",
            "rel-opendkim-2-8-4-Beta2",
            "rel-opendkim-2-8-4-Beta1",
            "rel-opendkim-2-8-4-Beta0",
            "rel-opendkim-2-8-3",
            "rel-opendkim-2-8-2",
            "rel-opendkim-2-8-1",
            "rel-opendkim-2-8-0",
            "rel-opendkim-2-7-4",
            "rel-opendkim-2-7-3",
            "rel-opendkim-2-7-2",
            "rel-opendkim-2-7-1",
            "rel-opendkim-2-7-0",
            "rel-opendkim-2-6-7",
            "rel-opendkim-2-7-0-Beta5",
            "rel-opendkim-2-7-0-Beta4",
            "rel-opendkim-2-7-0-Beta3",
            "rel-opendkim-2-7-0-Beta2",
            "rel-opendkim-2-7-0-Beta1",
            "rel-opendkim-2-7-0-Beta0",
            "rel-opendkim-2-6-6",
            "rel-opendkim-2-6-5",
            "rel-opendkim-2-6-4",
            "rel-opendkim-2-6-3",
            "rel-opendkim-2-6-2",
            "rel-opendkim-2-6-1",
            "rel-opendkim-2-6-0",
            "rel-opendkim-2-5-2",
            "rel-opendkim-2-5-1",
            "rel-opendkim-2-5-0-1",
            "rel-opendkim-2-5-0",
            "rel-opendkim-2-4-3",
            "rel-opendkim-2-4-2",
            "rel-opendkim-2-4-1",
            "rel-opendkim-2-4-0",
            "rel-opendkim-2-3-2",
            "rel-opendkim-2-3-1",
            "rel-opendkim-2-2-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-35766.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:22.965542417Z",
      "provider": "osv",
      "references": [
        "https://github.com/trusteddomainproject/OpenDKIM/issues/113"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-35766",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384290,
  "published_at": "2020-12-28T20:15:13.26+00:00"
}