wid-sec-w-2024-0439
Vulnerability from csaf_certbund
Published
2020-04-08 22:00
Modified
2024-05-07 22:00
Summary
libssh: 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
libssh ist eine C Bibliothek für das Anbieten von SSH Diensten auf Client- und Serverseite. Sie kann genutzt werden, um aus der Ferne Programme auszuführen, Dateien zu übertragen oder als sicherer und transparenter Tunnel für entfernte Programme genutzt werden.
Angriff
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libssh ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme
- Linux


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": "libssh ist eine C Bibliothek f\u00fcr das Anbieten von SSH Diensten auf Client- und Serverseite. Sie kann genutzt werden, um aus der Ferne Programme auszuf\u00fchren, Dateien zu \u00fcbertragen oder als sicherer und transparenter Tunnel f\u00fcr entfernte Programme genutzt werden.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libssh ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "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-2024-0439 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2024-0439.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-0439 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0439"
      },
      {
        "category": "external",
        "summary": "libssh Security Advisory vom 2020-04-08",
        "url": "https://www.libssh.org/security/advisories/CVE-2020-1730.txt"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4327-1 vom 2020-04-09",
        "url": "https://usn.ubuntu.com/4327-1/"
      },
      {
        "category": "external",
        "summary": "Arch Linux Security Advisory ASA-202004-11 vom 2020-04-24",
        "url": "https://security.archlinux.org/ASA-202004-11"
      },
      {
        "category": "external",
        "summary": "F5 Security Advisory K05295501 vom 2020-07-14",
        "url": "https://support.f5.com/csp/article/K05295501"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2021 vom 2021-05-19",
        "url": "https://access.redhat.com/errata/RHSA-2021:2021"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:4545 vom 2020-11-04",
        "url": "https://access.redhat.com/errata/RHSA-2020:4545"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:5149 vom 2020-11-18",
        "url": "https://access.redhat.com/errata/RHSA-2020:5149"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:5218 vom 2020-11-24",
        "url": "https://access.redhat.com/errata/RHSA-2020:5218"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory ASA-2020-175 vom 2020-12-07",
        "url": "https://downloads.avaya.com/css/P8/documents/101072800"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:0146 vom 2021-01-14",
        "url": "https://access.redhat.com/errata/RHSA-2021:0146"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:5633 vom 2021-02-24",
        "url": "https://access.redhat.com/errata/RHSA-2020:5633"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:5635 vom 2021-02-24",
        "url": "https://access.redhat.com/errata/RHSA-2020:5635"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:3016 vom 2021-08-06",
        "url": "https://access.redhat.com/errata/RHSA-2021:3016"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0056 vom 2022-03-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:0056"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:0539-1 vom 2024-02-20",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-February/017974.html"
      },
      {
        "category": "external",
        "summary": "Dell Security Advisory DSA-2024-198 vom 2024-05-08",
        "url": "https://www.dell.com/support/kbdoc/000224827/dsa-2024-="
      }
    ],
    "source_lang": "en-US",
    "title": "libssh: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-05-07T22:00:00.000+00:00",
      "generator": {
        "date": "2024-05-08T08:11:05.222+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2024-0439",
      "initial_release_date": "2020-04-08T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2020-04-08T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2020-04-13T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2020-04-23T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Arch Linux aufgenommen"
        },
        {
          "date": "2020-07-14T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von F5 aufgenommen"
        },
        {
          "date": "2020-11-03T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-11-18T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-11-24T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-12-08T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2021-01-14T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-02-24T23:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-05-18T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-08-05T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-03-10T23:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2024-02-20T23:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2024-05-07T22:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Dell aufgenommen"
        }
      ],
      "status": "final",
      "version": "15"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Avaya Aura Experience Portal",
            "product": {
              "name": "Avaya Aura Experience Portal",
              "product_id": "T015519",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_experience_portal:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Avaya"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "virtual",
                "product": {
                  "name": "Dell NetWorker virtual",
                  "product_id": "T034583",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:dell:networker:virtual"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "NetWorker"
          }
        ],
        "category": "vendor",
        "name": "Dell"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "EMC Avamar",
            "product": {
              "name": "EMC Avamar",
              "product_id": "T014381",
              "product_identification_helper": {
                "cpe": "cpe:/a:emc:avamar:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "EMC"
      },
      {
        "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": "Open Source Arch Linux",
            "product": {
              "name": "Open Source Arch Linux",
              "product_id": "T013312",
              "product_identification_helper": {
                "cpe": "cpe:/o:archlinux:archlinux:-"
              }
            }
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c0.8.9",
                "product": {
                  "name": "Open Source libssh \u003c0.8.9",
                  "product_id": "T016236",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:libssh:libssh:0.8.9"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c0.9.4",
                "product": {
                  "name": "Open Source libssh \u003c0.9.4",
                  "product_id": "T016237",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:libssh:libssh:0.9.4"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "libssh"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      },
      {
        "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": "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-2020-1730",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in libssh, wenn nicht vollst\u00e4ndig initialisierte AES-CTR-Chiffren verwendet werden. Ein b\u00f6swilliger Client oder Server kann diese Schwachstelle ausnutzen, um die Gegenstelle zum Absturz zu bringen, wenn diese versucht, die AES-CTR-Chiffren beim Schlie\u00dfen der Verbindung zu bereinigen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T015519",
          "T014381",
          "T002207",
          "67646",
          "T000126",
          "T013312",
          "T034583",
          "T001663"
        ]
      },
      "release_date": "2020-04-08T22:00:00Z",
      "title": "CVE-2020-1730"
    }
  ]
}


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