Security advisory

{
  "id": "654f85f0d28b98f3c2c4483a1303965f1ec9033263aec65c4e00c3fad6bf9f32",
  "url": "https://osv.dev/vulnerability/CVE-2021-3565",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3565",
    "summary": "A flaw was found in tpm2-tools in versions before 5.1.1 and before 4.3.2. tpm2_import used a fixed AES key for the inner wrapper, potentially allowing a MITM attacker to unwrap the inner portion and reveal the key being imported. The highest threat from this vulnerability is to data confidentiality.",
    "evidence": "osv:CVE-2021-3565",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-3565",
      "aliases": [
        "CVE-2021-3565"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tpm2-software/tpm2-tools",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4bcbebc852d9849c9f1784880db2accc2eb1a3bf"
                },
                {
                  "introduced": "6b6d46de1b30747405cbc0a4ed9759f9bceb9583"
                },
                {
                  "fixed": "6976f7a862c4215704d9b824d58d48be4048bd2a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tpm2-tools_project:tpm2-tools:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:tpm2-tools_project:tpm2-tools:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.1"
                      },
                      {
                        "fixed": "5.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.3.2-rc0",
            "5.1.1-rc0",
            "5.1",
            "4.3.1",
            "4.3.1-rc0",
            "4.2.1",
            "4.3.0",
            "4.3.0-rc1",
            "4.3.0-rc0",
            "4.2.1-rc1",
            "4.2.1-rc0",
            "4.2",
            "4.2-rc1",
            "4.2-RC0",
            "4.1.1-RC1",
            "4.1.1-RC0",
            "4.1",
            "4.1-rc1",
            "4.1-rc0",
            "4.0",
            "4.0-rc2",
            "4.0-rc0",
            "2.0.0",
            "v1.1.0",
            "2.0.0-beta_0",
            "v1.1-beta_1",
            "v1.1-beta_0",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3565.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:30.175020110Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ESY6HRYUKR5ZG2K5QAJQC5S6HMKZMFK7/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XK5M7I66PBXSN663TSLAZ3V6TWWFCV7C/",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1964427"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  },
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3565",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432512,
  "published_at": "2021-06-04T12:15:07.557+00:00"
}