GHSA-5HMM-X8Q8-W5JH

Vulnerability from github – Published: 2020-11-06 17:35 – Updated: 2024-09-04 19:53
VLAI
Summary
LDAP authentication bypass with empty password
Details

Impact

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 binds (eg. default on Active Directory) are affected.

Patches

A fix has been implemented that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. See https://github.com/alerta/alerta/pull/1345

Workarounds

LDAP administrators can disallow unauthenticated bind requests by clients.

References

https://tools.ietf.org/html/rfc4513#section-5.1.2 https://pypi.org/project/alerta-server/8.1.0/

For more information

If you have any questions or comments about this advisory: * Add a comment to the issue #1277 * Email us at admin@alerta.dev

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "alerta-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "alerta-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.5.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26214"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-11-06T17:34:42Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nUsers 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.\n\nOnly deployments where LDAP servers are configured to allow unauthenticated binds (eg. default on Active Directory) are affected.\n\n### Patches\nA fix has been implemented that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. See https://github.com/alerta/alerta/pull/1345\n\n### Workarounds\nLDAP administrators can disallow unauthenticated bind requests by clients.\n\n### References\nhttps://tools.ietf.org/html/rfc4513#section-5.1.2\nhttps://pypi.org/project/alerta-server/8.1.0/\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Add a comment to the issue [#1277](https://github.com/alerta/alerta/issues/1277)\n* Email us at [admin@alerta.dev](mailto:admin@alerta.dev)",
  "id": "GHSA-5hmm-x8q8-w5jh",
  "modified": "2024-09-04T19:53:05Z",
  "published": "2020-11-06T17:35:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26214"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alerta/alerta/issues/1277"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alerta/alerta/pull/1345"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/alerta/alerta"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/alerta-server/PYSEC-2020-159.yaml"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/alerta-server/8.1.0"
    },
    {
      "type": "WEB",
      "url": "https://tools.ietf.org/html/rfc4513#section-5.1.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LDAP authentication bypass with empty password"
}



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