{
  "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 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."
    }, {
      "category" : "description",
      "text" : "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.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libssh ausnutzen, um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Linux\n- UNIX",
      "title" : "Betroffene Betriebssysteme"
    } ],
    "publisher" : {
      "category" : "other",
      "contact_details" : "csaf-provider@cert-bund.de",
      "name" : "Bundesamt für Sicherheit in der Informationstechnik",
      "namespace" : "https://www.bsi.bund.de"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "WID-SEC-W-2024-0438 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2024-0438.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2024-0438 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0438"
    }, {
      "category" : "external",
      "summary" : "NIST Database vom 2020-07-29",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-16135"
    }, {
      "category" : "external",
      "summary" : "Libssh bugs",
      "url" : "https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2303 vom 2020-08-01",
      "url" : "https://lists.debian.org/debian-lts-announce/2020/debian-lts-announce-202007/msg00034.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-4447-1 vom 2020-08-04",
      "url" : "https://usn.ubuntu.com/4447-1/"
    }, {
      "category" : "external",
      "summary" : "Gentoo Linux Security Advisory GLSA-202011-05 vom 2020-11-03",
      "url" : "https://security.gentoo.org/glsa/202011-05"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:4387 vom 2021-11-09",
      "url" : "https://access.redhat.com/errata/RHSA-2021:4387"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:4750 vom 2021-11-19",
      "url" : "https://access.redhat.com/errata/RHSA-2021:4750"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:4848 vom 2021-11-29",
      "url" : "https://access.redhat.com/errata/RHSA-2021:4848"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:4845 vom 2021-11-29",
      "url" : "https://access.redhat.com/errata/RHSA-2021:4845"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0318 vom 2022-01-27",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0318"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0434 vom 2022-02-04",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0434"
    }, {
      "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 ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2024-05-07T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T18:05:30.323+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2024-0438",
      "initial_release_date" : "2020-07-29T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2020-07-29T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2020-08-02T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2020-08-04T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2020-09-10T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Referenz(en) aufgenommen: FEDORA-2020-F4F5E49CB8"
      }, {
        "date" : "2020-09-13T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Referenz(en) aufgenommen: FEDORA-2020-AC3E29073F"
      }, {
        "date" : "2020-11-02T23:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Gentoo aufgenommen"
      }, {
        "date" : "2021-11-09T23:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-11-21T23:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-11-29T23:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2022-01-27T23:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2022-02-03T23:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2024-02-20T23:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2024-05-07T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von Dell aufgenommen"
      } ],
      "status" : "final",
      "version" : "13"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "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",
          "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" : "Gentoo Linux",
        "product" : {
          "name" : "Gentoo Linux",
          "product_id" : "T012167",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:gentoo:linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Gentoo"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "0.9.4",
          "product" : {
            "name" : "Open Source libssh 0.9.4",
            "product_id" : "729746",
            "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-2020-16135",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existiert eine Schwachstelle in libssh. Diese beruht auf einer Null-Zeiger Dereferenzierung in tftpserver.c if ssh_buffer_new. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen."
    } ],
    "product_status" : {
      "known_affected" : [ "T014381", "2951", "T002207", "67646", "T000126", "T034583", "T012167", "729746" ]
    },
    "release_date" : "2020-07-29T22:00:00.000+00:00",
    "title" : "CVE-2020-16135"
  } ]
}