GSD-2020-26214

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.
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CVE-2020-26214
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{
  "GSD": {
    "alias": "CVE-2020-26214",
    "description": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.",
    "id": "GSD-2020-26214"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26214"
      ],
      "details": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.",
      "id": "GSD-2020-26214",
      "modified": "2023-12-13T01:22:09.270994Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26214",
        "STATE": "PUBLIC",
        "TITLE": "LDAP authentication bypass in Alerta"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "alerta",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 8.1.0"
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          {
            "lang": "eng",
            "value": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "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:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-287: Improper Authentication"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh",
            "refsource": "CONFIRM",
            "url": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh"
          },
          {
            "name": "https://github.com/alerta/alerta/issues/1277",
            "refsource": "MISC",
            "url": "https://github.com/alerta/alerta/issues/1277"
          },
          {
            "name": "https://github.com/alerta/alerta/pull/1345",
            "refsource": "MISC",
            "url": "https://github.com/alerta/alerta/pull/1345"
          },
          {
            "name": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65",
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            "url": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65"
          },
          {
            "name": "https://pypi.org/project/alerta-server/8.1.0/",
            "refsource": "MISC",
            "url": "https://pypi.org/project/alerta-server/8.1.0/"
          },
          {
            "name": "https://tools.ietf.org/html/rfc4513#section-5.1.2",
            "refsource": "MISC",
            "url": "https://tools.ietf.org/html/rfc4513#section-5.1.2"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-5hmm-x8q8-w5jh",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c7.5.7||\u003e=8.0.0,\u003c8.1.0",
          "affected_versions": "All versions before 7.5.7, all versions starting from 8.0.0 before 8.1.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-287",
            "CWE-937"
          ],
          "date": "2020-11-17",
          "description": "In Alerta, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented that returns HTTP Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.",
          "fixed_versions": [
            "7.5.7",
            "8.1.0"
          ],
          "identifier": "CVE-2020-26214",
          "identifiers": [
            "CVE-2020-26214",
            "GHSA-5hmm-x8q8-w5jh"
          ],
          "not_impacted": "All versions starting from 7.5.7 before 8.0.0, all versions starting from 8.1.0",
          "package_slug": "pypi/alerta-server",
          "pubdate": "2020-11-06",
          "solution": "Upgrade to versions 7.5.7, 8.1.0 or above.",
          "title": "Improper Authentication",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26214"
          ],
          "uuid": "99fbed36-4899-4827-8550-8d3fb1889d53"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:alerta_project:alerta:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.5.7",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:alerta_project:alerta:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "8.1.0",
                "versionStartIncluding": "8.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2020-26214"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
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                  "value": "CWE-287"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/alerta/alerta/issues/1277",
              "refsource": "MISC",
              "tags": [
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            },
            {
              "name": "https://pypi.org/project/alerta-server/8.1.0/",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
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              "url": "https://pypi.org/project/alerta-server/8.1.0/"
            },
            {
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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",
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          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2020-11-17T21:08Z",
      "publishedDate": "2020-11-06T18:15Z"
    }
  }
}


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