WID-SEC-W-2023-1126

Vulnerability from csaf_certbund - Published: 2021-02-14 23:00 - Updated: 2025-08-24 22:00
Summary
OpenLDAP: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: OpenLDAP ist eine frei verfügbare Implementierung des Verzeichnisdienstes LDAP.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in OpenLDAP ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux - UNIX - Windows
CVE-2021-27212
Affected products
Product Identifier Version Remediation
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE Linux
SUSE
 cpe:/o:suse:suse_linux:- —
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
Splunk Splunk Enterprise <9.3.1
Splunk / Splunk Enterprise
 <9.3.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Splunk Splunk Enterprise <9.2.3
Splunk / Splunk Enterprise
 <9.2.3
Splunk Splunk Enterprise <9.1.6
Splunk / Splunk Enterprise
 <9.1.6
Product Identifier Version Remediation
Open Source OpenLDAP <=2.5.1alpha
Open Source / OpenLDAP
 <=2.5.1alpha
Open Source OpenLDAP <=2.4.57
Open Source / OpenLDAP
 <=2.4.57
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "OpenLDAP ist eine frei verf\u00fcgbare Implementierung des Verzeichnisdienstes LDAP.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in OpenLDAP ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-1126 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-1126.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1126 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1126"
      },
      {
        "category": "external",
        "summary": "OpenLDAP BugBounty vom 2021-02-14",
        "url": "https://bugs.openldap.org/show_bug.cgi?id=9454"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-4860 vom 2021-02-22",
        "url": "http://www.debian.org/security/2021/dsa-4860"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2574 vom 2021-02-20",
        "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4744-1 vom 2021-02-22",
        "url": "https://ubuntu.com/security/notices/USN-4744-1"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0693-1 vom 2021-03-03",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-March/008428.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0692-1 vom 2021-03-03",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-March/008431.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0723-1 vom 2021-03-08",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-March/008438.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:14700-1 vom 2021-04-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008644.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2023-2033 vom 2023-05-03",
        "url": "https://alas.aws.amazon.com/AL2/ALAS-2023-2033.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2023-1741 vom 2023-05-04",
        "url": "https://alas.aws.amazon.com/ALAS-2023-1741.html"
      },
      {
        "category": "external",
        "summary": "Splunk Security Advisory SVD-2024-1012 vom 2024-10-14",
        "url": "https://advisory.splunk.com//advisories/SVD-2024-1012"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-7713-1 vom 2025-08-25",
        "url": "https://ubuntu.com/security/notices/USN-7713-1"
      }
    ],
    "source_lang": "en-US",
    "title": "OpenLDAP: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2025-08-24T22:00:00.000+00:00",
      "generator": {
        "date": "2025-08-25T09:05:25.084+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.4.0"
        }
      },
      "id": "WID-SEC-W-2023-1126",
      "initial_release_date": "2021-02-14T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-02-14T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-02-21T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2021-02-22T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-03-03T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-03-08T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-04-18T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2023-05-02T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-05-04T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2024-10-14T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Splunk-SVD aufgenommen"
        },
        {
          "date": "2025-08-24T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        }
      ],
      "status": "final",
      "version": "10"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=2.4.57",
                "product": {
                  "name": "Open Source OpenLDAP \u003c=2.4.57",
                  "product_id": "T018354"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=2.4.57",
                "product": {
                  "name": "Open Source OpenLDAP \u003c=2.4.57",
                  "product_id": "T018354-fixed"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=2.5.1alpha",
                "product": {
                  "name": "Open Source OpenLDAP \u003c=2.5.1alpha",
                  "product_id": "T018355"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=2.5.1alpha",
                "product": {
                  "name": "Open Source OpenLDAP \u003c=2.5.1alpha",
                  "product_id": "T018355-fixed"
                }
              }
            ],
            "category": "product_name",
            "name": "OpenLDAP"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c9.3.1",
                "product": {
                  "name": "Splunk Splunk Enterprise \u003c9.3.1",
                  "product_id": "T038314"
                }
              },
              {
                "category": "product_version",
                "name": "9.3.1",
                "product": {
                  "name": "Splunk Splunk Enterprise 9.3.1",
                  "product_id": "T038314-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:splunk:splunk:9.3.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c9.2.3",
                "product": {
                  "name": "Splunk Splunk Enterprise \u003c9.2.3",
                  "product_id": "T038315"
                }
              },
              {
                "category": "product_version",
                "name": "9.2.3",
                "product": {
                  "name": "Splunk Splunk Enterprise 9.2.3",
                  "product_id": "T038315-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:splunk:splunk:9.2.3"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c9.1.6",
                "product": {
                  "name": "Splunk Splunk Enterprise \u003c9.1.6",
                  "product_id": "T038316"
                }
              },
              {
                "category": "product_version",
                "name": "9.1.6",
                "product": {
                  "name": "Splunk Splunk Enterprise 9.1.6",
                  "product_id": "T038316-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:splunk:splunk:9.1.6"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Splunk Enterprise"
          }
        ],
        "category": "vendor",
        "name": "Splunk"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-27212",
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "T000126",
          "T038314",
          "398363",
          "T038315",
          "T038316"
        ],
        "last_affected": [
          "T018355",
          "T018354"
        ]
      },
      "release_date": "2021-02-14T23:00:00.000+00:00",
      "title": "CVE-2021-27212"
    }
  ]
}



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