WID-SEC-W-2023-1352
Vulnerability from csaf_certbund
Published
2021-12-13 23:00
Modified
2024-04-22 22:00
Summary
TLS Implementierungen: Schwachstelle ermöglicht Denial of Service

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
Transport Layer Security (TLS) ist ein hybrides Verschlüsselungsprotokoll zur Datenübertragung im Internet.
Angriff
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiedenen TLS Implementierungen ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme
- Linux - Sonstiges - UNIX - Windows


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": "Transport Layer Security (TLS) ist ein hybrides Verschl\u00fcsselungsprotokoll zur Daten\u00fcbertragung im Internet.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiedenen TLS Implementierungen ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\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-2023-1352 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-1352.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1352 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1352"
      },
      {
        "category": "external",
        "summary": "D(HE)ater proof of concept vom 2021-12-06",
        "url": "https://github.com/Balasys/dheater"
      },
      {
        "category": "external",
        "summary": "SUSE Security Alert on DHEater aka CVE-2002-20001 vom 2021-12-07",
        "url": "https://www.suse.com/support/kb/doc/?id=000020510"
      },
      {
        "category": "external",
        "summary": "F5 Security Advisory K83120834 vom 2023-06-02",
        "url": "https://my.f5.com/manage/s/article/K83120834"
      },
      {
        "category": "external",
        "summary": "WatchGuard Security Advisory WGSA-2024-00008 vom 2024-04-22",
        "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00008"
      }
    ],
    "source_lang": "en-US",
    "title": "TLS Implementierungen: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-04-22T22:00:00.000+00:00",
      "generator": {
        "date": "2024-04-23T08:04:07.952+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-1352",
      "initial_release_date": "2021-12-13T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-12-13T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2023-06-04T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von F5 aufgenommen"
        },
        {
          "date": "2024-04-22T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von WatchGuard aufgenommen"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Apache HTTP Server",
            "product": {
              "name": "Apache HTTP Server",
              "product_id": "67869",
              "product_identification_helper": {
                "cpe": "cpe:/a:apache:http_server:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Apache"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "F5 BIG-IP",
            "product": {
              "name": "F5 BIG-IP",
              "product_id": "T001663",
              "product_identification_helper": {
                "cpe": "cpe:/a:f5:big-ip:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "F5"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "NGINX NGINX",
            "product": {
              "name": "NGINX NGINX",
              "product_id": "T014143",
              "product_identification_helper": {
                "cpe": "cpe:/a:nginx:nginx:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "NGINX"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source OpenSSH",
            "product": {
              "name": "Open Source OpenSSH",
              "product_id": "8223",
              "product_identification_helper": {
                "cpe": "cpe:/a:openbsd:openssh:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Open Source OpenSSL",
            "product": {
              "name": "Open Source OpenSSL",
              "product_id": "8269",
              "product_identification_helper": {
                "cpe": "cpe:/a:openssl:openssl:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Open Source Postfix",
            "product": {
              "name": "Open Source Postfix",
              "product_id": "T004032",
              "product_identification_helper": {
                "cpe": "cpe:/a:postfix:postfix:-"
              }
            }
          }
        ],
        "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": [
          {
            "category": "product_name",
            "name": "Specification TLS",
            "product": {
              "name": "Specification TLS",
              "product_id": "T004212",
              "product_identification_helper": {
                "cpe": "cpe:/a:open_source:tls1:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Specification"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "WatchGuard Firebox",
            "product": {
              "name": "WatchGuard Firebox",
              "product_id": "T034346",
              "product_identification_helper": {
                "cpe": "cpe:/a:watchguard:firebox:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "WatchGuard"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2002-20001",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in verschiedenen TLS Implementierungen, wenn ein Diffie-Hellman (DHE) Schl\u00fcsselaustausch aktiviert ist. Wird im DHE Handshake der \"Public key\" Parameter mit einem ung\u00fcltigen Wert bef\u00fcllt, verbraucht die Gegenstelle bei der Pr\u00fcfung viele CPU Ressourcen. Ein entfernter, anonymer Angreifer kann dies ausnutzen, um einen Denial of Service Zustand herbeizuf\u00fchren."
        }
      ],
      "product_status": {
        "known_affected": [
          "8223",
          "T004212",
          "T034346",
          "T002207",
          "8269",
          "67869",
          "T001663",
          "T004032",
          "T014143"
        ]
      },
      "release_date": "2021-12-13T23:00:00Z",
      "title": "CVE-2002-20001"
    }
  ]
}


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