{
  "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" : "Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalität bereitstellt.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um DNS Antworten zu manipulieren.",
      "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-2026-0817 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0817.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-0817 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0817"
    }, {
      "category" : "external",
      "summary" : "NIST Vulnerability Database vom 2026-03-20",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-4437"
    }, {
      "category" : "external",
      "summary" : "NIST Vulnerability Database vom 2026-03-20",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-4438"
    }, {
      "category" : "external",
      "summary" : "Sourceware Bugzilla vom 2026-03-22",
      "url" : "https://sourceware.org/bugzilla/show_bug.cgi?id=34014"
    }, {
      "category" : "external",
      "summary" : "Sourceware Bugzilla vom 2026-03-22",
      "url" : "https://sourceware.org/bugzilla/show_bug.cgi?id=34015"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:20999-1 vom 2026-04-13",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025225.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:21019-1 vom 2026-04-13",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025211.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:21039-1 vom 2026-04-13",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025301.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:21069-1 vom 2026-04-13",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025273.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:1369-1 vom 2026-04-15",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025351.html"
    }, {
      "category" : "external",
      "summary" : "openSUSE Security Update OPENSUSE-SU-2026:20501-1 vom 2026-04-21",
      "url" : "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/GFPKIVG6Y3FRW5FU5KIUSL5GMSDW52OV/"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:21164-1 vom 2026-04-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025528.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:7316 vom 2026-04-24",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7316"
    }, {
      "category" : "external",
      "summary" : "NetApp Security Advisory NTAP-20260410-0017 vom 2026-05-15",
      "url" : "https://security.netapp.com/advisory/NTAP-20260410-0017"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:19061 vom 2026-05-19",
      "url" : "https://access.redhat.com/errata/RHSA-2026:19061"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:20587 vom 2026-05-26",
      "url" : "https://access.redhat.com/errata/RHSA-2026:20587"
    }, {
      "category" : "external",
      "summary" : "Container-Optimized OS release notes vom 2026-05-26",
      "url" : "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_21_2026"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:20597 vom 2026-05-26",
      "url" : "https://access.redhat.com/errata/RHSA-2026:20597"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-20587 vom 2026-05-27",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-20587.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-50291 vom 2026-05-29",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-50291.html"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:20597 vom 2026-05-30",
      "url" : "https://errata.build.resf.org/RLSA-2026:20597"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:22634 vom 2026-06-02",
      "url" : "https://access.redhat.com/errata/RHSA-2026:22634"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:26319 vom 2026-06-16",
      "url" : "https://access.redhat.com/errata/RHSA-2026:26319"
    }, {
      "category" : "external",
      "summary" : "IBM Security Bulletin 7277096 vom 2026-06-19",
      "url" : "https://www.ibm.com/support/pages/node/7277096"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:28010 vom 2026-06-22",
      "url" : "https://access.redhat.com/errata/RHSA-2026:28010"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:29197 vom 2026-06-24",
      "url" : "https://access.redhat.com/errata/RHSA-2026:29197"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-20597 vom 2026-06-27",
      "url" : "http://linux.oracle.com/errata/ELSA-2026-20597.html"
    } ],
    "source_lang" : "en-US",
    "title" : "GNU libc: Mehrere Schwachstellen ermöglichen Manipulation von DNS Antworten",
    "tracking" : {
      "current_release_date" : "2026-06-28T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-06-29T10:06:38.181+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-0817",
      "initial_release_date" : "2026-03-22T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-03-22T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-03-23T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Referenz(en) aufgenommen: GLIBC-SA-2026-0006, GLIBC-SA-2026-0005"
      }, {
        "date" : "2026-04-12T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-04-13T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-04-15T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-04-21T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von openSUSE und SUSE aufgenommen"
      }, {
        "date" : "2026-04-23T22:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-14T22:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von NetApp aufgenommen"
      }, {
        "date" : "2026-05-19T22:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-25T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-26T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-05-27T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2026-05-28T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2026-05-31T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
      }, {
        "date" : "2026-06-02T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-16T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-18T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von IBM aufgenommen"
      }, {
        "date" : "2026-06-22T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-24T22:00:00.000+00:00",
        "number" : "19",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2026-06-28T22:00:00.000+00:00",
        "number" : "20",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      } ],
      "status" : "final",
      "version" : "20"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Google Container-Optimized OS",
        "product" : {
          "name" : "Google Container-Optimized OS",
          "product_id" : "1607324",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:google:container-optimized_os:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Google"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "operator",
          "product" : {
            "name" : "IBM MQ operator",
            "product_id" : "T036688",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:ibm:mq:operator"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "MQ"
      } ],
      "category" : "vendor",
      "name" : "IBM"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "for VMware vSphere",
          "product" : {
            "name" : "NetApp ActiveIQ Unified Manager for VMware vSphere",
            "product_id" : "T025152",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:netapp:active_iq_unified_manager:for_vmware_vsphere"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "ActiveIQ Unified Manager"
      } ],
      "category" : "vendor",
      "name" : "NetApp"
    }, {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version",
          "name" : "2.34-2.43",
          "product" : {
            "name" : "Open Source GNU libc 2.34-2.43",
            "product_id" : "T052009",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:gnu:glibc:2.34_-_2.43"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "GNU libc"
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Oracle Linux",
        "product" : {
          "name" : "Oracle Linux",
          "product_id" : "T004914",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:oracle:linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Oracle"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "RESF Rocky Linux",
        "product" : {
          "name" : "RESF Rocky Linux",
          "product_id" : "T032255",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:resf:rocky_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "RESF"
    }, {
      "branches" : [ {
        "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" : "product_version",
          "name" : "8",
          "product" : {
            "name" : "Red Hat Enterprise Linux 8",
            "product_id" : "T054695",
            "product_identification_helper" : {
              "cpe" : "cpe:/o:redhat:enterprise_linux:8"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "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" : "product_name",
        "name" : "SUSE openSUSE",
        "product" : {
          "name" : "SUSE openSUSE",
          "product_id" : "T027843",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:opensuse:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "SUSE"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-4437",
    "product_status" : {
      "known_affected" : [ "T054695", "T025152", "T002207", "67646", "T052009", "T027843", "T036688", "T004914", "1607324", "T032255" ]
    },
    "release_date" : "2026-03-22T23:00:00.000+00:00",
    "title" : "CVE-2026-4437"
  }, {
    "cve" : "CVE-2026-4438",
    "product_status" : {
      "known_affected" : [ "T054695", "T025152", "T002207", "67646", "T052009", "T027843", "T036688", "T004914", "1607324", "T032255" ]
    },
    "release_date" : "2026-03-22T23:00:00.000+00:00",
    "title" : "CVE-2026-4438"
  } ]
}