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FKIE_CVE-2020-36229

Vulnerability from fkie_nvd - Published: 2021-01-26 18:15 - Updated: 2026-06-17 03:15
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was discovered in ldap_X509dn2bv in OpenLDAP before 2.4.57 leading to a slapd crash in the X.509 DN parsing in ad_keystring, resulting in denial of service.
References
cve@mitre.orghttp://seclists.org/fulldisclosure/2021/May/64Mailing List, Third Party Advisory
cve@mitre.orghttp://seclists.org/fulldisclosure/2021/May/65Mailing List, Third Party Advisory
cve@mitre.orghttp://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
cve@mitre.orghttps://bugs.openldap.org/show_bug.cgi?id=9425Issue Tracking, Vendor Advisory
cve@mitre.orghttps://git.openldap.org/openldap/openldap/-/commit/4bdfffd2889c0c5cdf58bebafbdc8fce4bb2bff0Patch, Vendor Advisory
cve@mitre.orghttps://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Release Notes, Vendor Advisory
cve@mitre.orghttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
cve@mitre.orghttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/02/msg00005.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210226-0002/Third Party Advisory
cve@mitre.orghttps://support.apple.com/kb/HT212529Third Party Advisory
cve@mitre.orghttps://support.apple.com/kb/HT212530Third Party Advisory
cve@mitre.orghttps://support.apple.com/kb/HT212531Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4845Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/64Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/65Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.openldap.org/show_bug.cgi?id=9425Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openldap.org/openldap/openldap/-/commit/4bdfffd2889c0c5cdf58bebafbdc8fce4bb2bff0Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00005.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210226-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212529Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212530Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212531Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4845Third Party Advisory
Impacted products
Vendor Product Version
openldap openldap *
debian debian_linux 9.0
debian debian_linux 10.0
apple mac_os_x *
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple macos *
To clipboard 

{
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          "vendor": "n/a",
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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "A flaw was discovered in ldap_X509dn2bv in OpenLDAP before 2.4.57 leading to a slapd crash in the X.509 DN parsing in ad_keystring, resulting in denial of service."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un fallo en ldap_X509dn2bv en OpenLDAP versiones anteriores a 2.4.57, conllevando un bloqueo de slapd en el an\u00e1lisis del DN X.509 en ad_keystring, resultando en una denegaci\u00f3n de servicio"
    }
  ],
  "id": "CVE-2020-36229",
  "lastModified": "2026-06-17T03:15:09.883",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "source": "nvd@nist.gov",
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  "published": "2021-01-26T18:15:57.287",
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      ],
      "url": "https://www.debian.org/security/2021/dsa-4845"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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