CVE-2021-26117 (GCVE-0-2021-26117)

Vulnerability from cvelistv5 – Published: 2021-01-27 00:00 – Updated: 2024-08-03 20:19
VLAI
Title
ActiveMQ: LDAP-Authentication does not verify passwords on servers with anonymous bind
Summary
The optional ActiveMQ LDAP login module can be configured to use anonymous access to the LDAP server. In this case, for Apache ActiveMQ Artemis prior to version 2.16.0 and Apache ActiveMQ prior to versions 5.16.1 and 5.15.14, the anonymous context is used to verify a valid users password in error, resulting in no check on the password.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1197 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache ActiveMQ Affected: Apache ActiveMQ Artemis , < 2.16.0 (custom)
Affected: Apache ActiveMQ , < 5.16.1 (custom)
guessed Create a notification for this product.
Credits
Apache ActiveMQ would like to thank Gregor Tudan <gregor.tudan@cofinpro.de> for reporting this issue.
Show details on NVD website
To clipboard 

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            "value": "El m\u00f3dulo de inicio de sesi\u00f3n LDAP de ActiveMQ opcional puede ser configurado para usar el acceso an\u00f3nimo al servidor LDAP.\u0026#xa0;En este caso, para Apache ActiveMQ Artemis anterior a versi\u00f3n 2.16.0 y Apache ActiveMQ anterior a versiones 5.16.1 y 5.15.14, el contexto an\u00f3nimo es usado para verificar una contrase\u00f1a de usuario v\u00e1lida por error, resultando en una comprobaci\u00f3n de la contrase\u00f1a"
          }
        ],
        "id": "CVE-2021-26117",
        "lastModified": "2026-06-15T13:03:40.357",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-01-27T19:15:13.720",
        "references": [
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            "url": "https://lists.apache.org/thread.html/r22cdc0fb45e223ac92bc2ceff7af92f1193dfc614c8b248534456229%40%3Cissues.activemq.apache.org%3E"
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        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              }
            ],
            "source": "security@apache.org",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-12T13:52:35+00:00",
      "cve": "CVE-2021-26117",
      "id": "CVE-2021-26117",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "activemq: LDAP authentication bypass with anonymous bind",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26117.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
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Vulnerability timeline

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