Security advisory

{
  "id": "1a00f10715bf4be18861dded9b0dfc9f220fa813297544d8b023b671404b7365",
  "url": "https://osv.dev/vulnerability/CVE-2020-24455",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-24455",
    "summary": "Missing initialization of a variable in the TPM2 source may allow a privileged user to potentially enable an escalation of privilege via local access. This affects tpm2-tss before 3.0.1 and before 2.4.3.",
    "evidence": "osv:CVE-2020-24455",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-24455",
      "aliases": [
        "CVE-2020-24455"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tpm2-software/tpm2-tss",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "14a0e029f9e6a507eaa8ece0b230a23ea8fa7dcb"
                },
                {
                  "introduced": "0eee5c42fd06bfb36d351cb9f13c1c06a59d678b"
                },
                {
                  "fixed": "f653b79868472ba7d3a9fa323ea8bce9137ea7d8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tpm2_software_stack_project:tpm2_software_stack:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.4.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:tpm2_software_stack_project:tpm2_software_stack:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "14a0e029f9e6a507eaa8ece0b230a23ea8fa7dcb"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.4.3"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f653b79868472ba7d3a9fa323ea8bce9137ea7d8"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "3.0.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.0",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.0.0",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24455.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:51.880843895Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/",
        "https://github.com/tpm2-software/tpm2-tss/releases/tag/2.4.3",
        "https://github.com/tpm2-software/tpm2-tss/releases/tag/3.0.1",
        "https://security.gentoo.org/glsa/202107-10",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1902167"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-24455",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383969,
  "published_at": "2021-02-26T03:15:12.213+00:00"
}