{
  "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" : "libssh2 ist eine C Bibliothek für das Anbieten von SSH2 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 libssh2 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-2026-1332 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1332.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-1332 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1332"
    }, {
      "category" : "external",
      "summary" : "EU Vulnerability Database vom 2026-05-03",
      "url" : "https://euvd.enisa.europa.eu/enisa/EUVD-2026-26722"
    }, {
      "category" : "external",
      "summary" : "libssh commit vom 2026-05-03",
      "url" : "https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1"
    }, {
      "category" : "external",
      "summary" : "Vuldb mit PoC vom 2026-04-15",
      "url" : "https://vuldb.com/submit/805564"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7021 vom 2026-05-11",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7021"
    }, {
      "category" : "external",
      "summary" : "Microsoft Security Update Guide vom 2026-05-12",
      "url" : "https://msrc.microsoft.com/update-guide/"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-2026-F87AC8187C vom 2026-05-22",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-2026-f87ac8187c"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-2026-1B9134CDC9 vom 2026-05-22",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-2026-1b9134cdc9"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-EPEL-2026-E7B8776A02 vom 2026-05-22",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-e7b8776a02"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-EPEL-2026-AFD26AD447 vom 2026-05-22",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-afd26ad447"
    }, {
      "category" : "external",
      "summary" : "Fedora Security Advisory FEDORA-EPEL-2026-AFCB3443A1 vom 2026-05-22",
      "url" : "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-afcb3443a1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-8309-1 vom 2026-05-26",
      "url" : "https://ubuntu.com/security/notices/USN-8309-1"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS2-2026-3329 vom 2026-06-09",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS2-2026-3329.html"
    } ],
    "source_lang" : "en-US",
    "title" : "libssh2: Schwachstelle ermöglicht Denial of Service",
    "tracking" : {
      "current_release_date" : "2026-06-08T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-06-09T09:02:20.838+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-1332",
      "initial_release_date" : "2026-05-03T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-05-03T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-05-10T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-11T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates aufgenommen"
      }, {
        "date" : "2026-05-25T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Fedora aufgenommen"
      }, {
        "date" : "2026-05-26T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2026-06-08T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Amazon aufgenommen"
      } ],
      "status" : "final",
      "version" : "6"
    }
  },
  "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" : "Fedora Linux",
        "product" : {
          "name" : "Fedora Linux",
          "product_id" : "T054551",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:fedoraproject:fedora:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Fedora"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "azl3",
          "product" : {
            "name" : "Microsoft Azure Linux azl3",
            "product_id" : "T049210",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:microsoft:azure_linux:azl3"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "Azure Linux"
      } ],
      "category" : "vendor",
      "name" : "Microsoft"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Open Source libssh2",
        "product" : {
          "name" : "Open Source libssh2",
          "product_id" : "T053478",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:libssh2:libssh2:-"
          }
        }
      } ],
      "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" : "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-2026-7598",
    "product_status" : {
      "known_affected" : [ "T054551", "67646", "T000126", "398363", "T049210", "T053478" ]
    },
    "release_date" : "2026-05-03T22:00:00.000+00:00",
    "title" : "CVE-2026-7598"
  } ]
}