cve-2019-19521
Vulnerability from cvelistv5
Published
2019-12-04 23:33
Modified
2024-08-05 02:16
Severity ?
Summary
libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).
References
cve@mitre.orghttp://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.htmlThird Party Advisory
cve@mitre.orghttp://seclists.org/fulldisclosure/2019/Dec/14Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2019/12/04/6Mailing List
cve@mitre.orghttps://seclists.org/bugtraq/2019/Dec/8Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttps://www.openbsd.org/errata66.htmlVendor Advisory
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2019/12/04/5Exploit, Mailing List, Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:16:47.981Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2019/12/04/5"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openbsd.org/errata66.html"
          },
          {
            "name": "[oss-security] 20191204 Re: Authentication vulnerabilities in OpenBSD",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2019/12/04/6"
          },
          {
            "name": "[oss-security] 20191204 Authentication vulnerabilities in OpenBSD",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2019/12/04/5"
          },
          {
            "name": "20191205 Authentication vulnerabilities in OpenBSD",
            "tags": [
              "mailing-list",
              "x_refsource_BUGTRAQ",
              "x_transferred"
            ],
            "url": "https://seclists.org/bugtraq/2019/Dec/8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html"
          },
          {
            "name": "20191206 Authentication vulnerabilities in OpenBSD",
            "tags": [
              "mailing-list",
              "x_refsource_FULLDISC",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2019/Dec/14"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c)."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-12-06T21:06:07",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2019/12/04/5"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openbsd.org/errata66.html"
        },
        {
          "name": "[oss-security] 20191204 Re: Authentication vulnerabilities in OpenBSD",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2019/12/04/6"
        },
        {
          "name": "[oss-security] 20191204 Authentication vulnerabilities in OpenBSD",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2019/12/04/5"
        },
        {
          "name": "20191205 Authentication vulnerabilities in OpenBSD",
          "tags": [
            "mailing-list",
            "x_refsource_BUGTRAQ"
          ],
          "url": "https://seclists.org/bugtraq/2019/Dec/8"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html"
        },
        {
          "name": "20191206 Authentication vulnerabilities in OpenBSD",
          "tags": [
            "mailing-list",
            "x_refsource_FULLDISC"
          ],
          "url": "http://seclists.org/fulldisclosure/2019/Dec/14"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-19521",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.openwall.com/lists/oss-security/2019/12/04/5",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2019/12/04/5"
            },
            {
              "name": "https://www.openbsd.org/errata66.html",
              "refsource": "MISC",
              "url": "https://www.openbsd.org/errata66.html"
            },
            {
              "name": "[oss-security] 20191204 Re: Authentication vulnerabilities in OpenBSD",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2019/12/04/6"
            },
            {
              "name": "[oss-security] 20191204 Authentication vulnerabilities in OpenBSD",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2019/12/04/5"
            },
            {
              "name": "20191205 Authentication vulnerabilities in OpenBSD",
              "refsource": "BUGTRAQ",
              "url": "https://seclists.org/bugtraq/2019/Dec/8"
            },
            {
              "name": "http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html"
            },
            {
              "name": "20191206 Authentication vulnerabilities in OpenBSD",
              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2019/Dec/14"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-19521",
    "datePublished": "2019-12-04T23:33:35",
    "dateReserved": "2019-12-03T00:00:00",
    "dateUpdated": "2024-08-05T02:16:47.981Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-19521\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2019-12-05T00:15:11.400\",\"lastModified\":\"2019-12-12T15:55:07.857\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).\"},{\"lang\":\"es\",\"value\":\"libc en OpenBSD versi\u00f3n 6.6, permite omitir la autenticaci\u00f3n por medio del nombre de usuario -schallenge, como es demostrado por smtpd, ldapd o radiusd. Esto est\u00e1 relacionado con los archivos gen/auth_subr.c y gen/authenticate.c en libc (y los archivos login/login.c y xenocara/app/xenodm/greeter/verify.c).\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":7.5},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0E0CC007-1428-4683-A196-3544F1C9CC92\"}]}]}],\"references\":[{\"url\":\"http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2019/Dec/14\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2019/12/04/5\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2019/12/04/6\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://seclists.org/bugtraq/2019/Dec/8\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://www.openbsd.org/errata66.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.openwall.com/lists/oss-security/2019/12/04/5\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Mailing List\",\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • 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.