CVE-2022-0547 (GCVE-0-2022-0547)
Vulnerability from cvelistv5
Published
2022-03-18 18:00
Modified
2025-11-03 20:34
Severity ?
CWE
  • CWE-305 - - Authentication Bypass by Primary Weakness
Summary
OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.
Impacted products
Vendor Product Version
n/a OpenVPN Version: version 2.1 until version 2.4.12 and 2.5.6.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:34:30.191Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://openvpn.net/community-downloads/"
          },
          {
            "name": "FEDORA-2022-7d46acce7c",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/"
          },
          {
            "name": "FEDORA-2022-cb4c1146dc",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/"
          },
          {
            "name": "[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00005.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-0547",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:27:37.639278Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:46:01.507Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OpenVPN",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "version 2.1 until version 2.4.12 and 2.5.6."
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-305",
              "description": "CWE-305 - Authentication Bypass by Primary Weakness",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-05-03T13:06:11.000Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "shortName": "OpenVPN"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://openvpn.net/community-downloads/"
        },
        {
          "name": "FEDORA-2022-7d46acce7c",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/"
        },
        {
          "name": "FEDORA-2022-cb4c1146dc",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/"
        },
        {
          "name": "[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@openvpn.net",
          "ID": "CVE-2022-0547",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OpenVPN",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "version 2.1 until version 2.4.12 and 2.5.6."
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-305 - Authentication Bypass by Primary Weakness"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements",
              "refsource": "MISC",
              "url": "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements"
            },
            {
              "name": "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547",
              "refsource": "MISC",
              "url": "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547"
            },
            {
              "name": "https://openvpn.net/community-downloads/",
              "refsource": "MISC",
              "url": "https://openvpn.net/community-downloads/"
            },
            {
              "name": "FEDORA-2022-7d46acce7c",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/"
            },
            {
              "name": "FEDORA-2022-cb4c1146dc",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/"
            },
            {
              "name": "[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
    "assignerShortName": "OpenVPN",
    "cveId": "CVE-2022-0547",
    "datePublished": "2022-03-18T18:00:20.000Z",
    "dateReserved": "2022-02-08T00:00:00.000Z",
    "dateUpdated": "2025-11-03T20:34:30.191Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://community.openvpn.net/openvpn/wiki/CVE-2022-0547\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://openvpn.net/community-downloads/\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/\", \"name\": \"FEDORA-2022-7d46acce7c\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/\", \"name\": \"FEDORA-2022-cb4c1146dc\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html\", \"name\": \"[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00005.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:34:30.191Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-0547\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-23T13:27:37.639278Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-23T14:34:53.181Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"OpenVPN\", \"versions\": [{\"status\": \"affected\", \"version\": \"version 2.1 until version 2.4.12 and 2.5.6.\"}]}], \"references\": [{\"url\": \"https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://community.openvpn.net/openvpn/wiki/CVE-2022-0547\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://openvpn.net/community-downloads/\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/\", \"name\": \"FEDORA-2022-7d46acce7c\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/\", \"name\": \"FEDORA-2022-cb4c1146dc\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html\", \"name\": \"[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-305\", \"description\": \"CWE-305 - Authentication Bypass by Primary Weakness\"}]}], \"providerMetadata\": {\"orgId\": \"36a55730-e66d-4d39-8ca6-3c3b3017965e\", \"shortName\": \"OpenVPN\", \"dateUpdated\": \"2022-05-03T13:06:11.000Z\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"version 2.1 until version 2.4.12 and 2.5.6.\"}]}, \"product_name\": \"OpenVPN\"}]}, \"vendor_name\": \"n/a\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements\", \"name\": \"https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements\", \"refsource\": \"MISC\"}, {\"url\": \"https://community.openvpn.net/openvpn/wiki/CVE-2022-0547\", \"name\": \"https://community.openvpn.net/openvpn/wiki/CVE-2022-0547\", \"refsource\": \"MISC\"}, {\"url\": \"https://openvpn.net/community-downloads/\", \"name\": \"https://openvpn.net/community-downloads/\", \"refsource\": \"MISC\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/\", \"name\": \"FEDORA-2022-7d46acce7c\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/\", \"name\": \"FEDORA-2022-cb4c1146dc\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html\", \"name\": \"[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security update\", \"refsource\": \"MLIST\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-305 - Authentication Bypass by Primary Weakness\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2022-0547\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"security@openvpn.net\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-0547\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:34:30.191Z\", \"dateReserved\": \"2022-02-08T00:00:00.000Z\", \"assignerOrgId\": \"36a55730-e66d-4d39-8ca6-3c3b3017965e\", \"datePublished\": \"2022-03-18T18:00:20.000Z\", \"assignerShortName\": \"OpenVPN\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…