{
  "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": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Applicance",
        "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-2022-0340 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2022-0340.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-0340 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0340"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:4611-1 vom 2022-12-23",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-December/013341.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:4561-1 vom 2022-12-19",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-December/013272.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2022-9999 vom 2022-11-16",
        "url": "http://linux.oracle.com/errata/ELSA-2022-9999.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-9141 vom 2021-04-01",
        "url": "http://linux.oracle.com/errata/ELSA-2021-9141.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-9140 vom 2021-04-01",
        "url": "http://linux.oracle.com/errata/ELSA-2021-9140.html"
      },
      {
        "category": "external",
        "summary": "NIST Vulnerability Database vom 2020-10-04",
        "url": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-26541"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2020-5912 vom 2020-11-06",
        "url": "http://linux.oracle.com/errata/ELSA-2020-5912.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2020-5913 vom 2020-11-10",
        "url": "https://linux.oracle.com/errata/ELSA-2020-5913.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2020-5923 vom 2020-11-12",
        "url": "https://linux.oracle.com/errata/ELSA-2020-5923.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2020-5924 vom 2020-11-12",
        "url": "https://linux.oracle.com/errata/ELSA-2020-5924.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2020-5956 vom 2020-12-02",
        "url": "http://linux.oracle.com/errata/ELSA-2020-5956.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2570 vom 2021-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2021:2570"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2599 vom 2021-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2021:2599"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-2570 vom 2021-07-01",
        "url": "https://linux.oracle.com/errata/ELSA-2021-2570.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2666 vom 2021-07-07",
        "url": "https://access.redhat.com/errata/RHSA-2021:2666"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5120-1 vom 2021-10-22",
        "url": "https://ubuntu.com/security/notices/USN-5120-1"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2719 vom 2021-07-20",
        "url": "https://access.redhat.com/errata/RHSA-2021:2719"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2718 vom 2021-07-21",
        "url": "https://access.redhat.com/errata/RHSA-2021:2718"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory ASA-2021-099 vom 2021-08-25",
        "url": "https://downloads.avaya.com/css/P8/documents/101077235"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5070-1 vom 2021-09-09",
        "url": "https://ubuntu.com/security/notices/USN-5070-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5106-1 vom 2021-10-06",
        "url": "https://ubuntu.com/security/notices/USN-5106-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5210-1 vom 2022-01-06",
        "url": "https://ubuntu.com/security/notices/USN-5210-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5210-2 vom 2022-01-12",
        "url": "https://ubuntu.com/security/notices/USN-5210-2"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-002 vom 2022-01-31",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-002.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASKERNEL-5.4-2022-004 vom 2022-01-31",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-004.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2111-1 vom 2022-06-17",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011310.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2104-1 vom 2022-06-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011302.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2172-1 vom 2022-06-24",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011346.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2173-1 vom 2022-06-24",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011347.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2177-1 vom 2022-06-24",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011353.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2377-1 vom 2022-07-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-July/011520.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2382-1 vom 2022-07-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-July/011539.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2393-1 vom 2022-07-14",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-July/011546.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2407-1 vom 2022-07-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-July/011557.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2629-1 vom 2022-08-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-August/011744.html"
      },
      {
        "category": "external",
        "summary": "Dell Security Advisory DSA-2022-266 vom 2022-09-21",
        "url": "https://www.dell.com/support/kbdoc/000203560/dsa-2022-266-dell-networker-vproxy-security-update-for-multiple-third-party-vulnerabilities"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Umgehen von Sicherheitsvorkehrungen",
    "tracking": {
      "current_release_date": "2022-12-26T23:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:28:21.991+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2022-0340",
      "initial_release_date": "2020-10-04T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2020-10-04T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2020-11-05T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2020-11-10T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2020-11-12T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2020-12-01T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-03-31T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-06-29T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-06-30T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-07-07T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-07-20T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-08-26T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2021-09-08T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-10-06T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-10-21T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-05T23:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-12T23:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-30T23:00:00.000+00:00",
          "number": "17",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2022-06-16T22:00:00.000+00:00",
          "number": "18",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-06-19T22:00:00.000+00:00",
          "number": "19",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-06-26T22:00:00.000+00:00",
          "number": "20",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-07-12T22:00:00.000+00:00",
          "number": "21",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-07-13T22:00:00.000+00:00",
          "number": "22",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-07-14T22:00:00.000+00:00",
          "number": "23",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-07-17T22:00:00.000+00:00",
          "number": "24",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-08-02T22:00:00.000+00:00",
          "number": "25",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-09-20T22:00:00.000+00:00",
          "number": "26",
          "summary": "Neue Updates von Dell aufgenommen"
        },
        {
          "date": "2022-11-16T23:00:00.000+00:00",
          "number": "27",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2022-12-19T23:00:00.000+00:00",
          "number": "28",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-12-26T23:00:00.000+00:00",
          "number": "29",
          "summary": "Neue Updates von SUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "29"
    }
  },
  "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": "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": [
          {
            "category": "product_name",
            "name": "Dell NetWorker",
            "product": {
              "name": "Dell NetWorker",
              "product_id": "T024663",
              "product_identification_helper": {
                "cpe": "cpe:/a:dell:networker:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Dell"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel \u003c= 5.8.13",
            "product": {
              "name": "Open Source Linux Kernel \u003c= 5.8.13",
              "product_id": "T017414",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:5.8.13"
              }
            }
          }
        ],
        "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": "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-2020-26541",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle im Linux Kernel. Der Schutzmechanismus der Secure Boot Forbidden Signature Database (aka dbx) wird nicht ordnungsgem\u00e4\u00df durchgesetzt. Dies betrifft certs/blacklist.c und certs/system_keyring.c. Ein privilegierter Angreifer kann diese Schwachstelle ausnutzen, um Sicherheitsvorkehrungen zu umgehen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T015519",
          "T002207",
          "67646",
          "T000126",
          "T024663",
          "398363",
          "T004914"
        ],
        "last_affected": [
          "T017414"
        ]
      },
      "release_date": "2020-10-04T22:00:00.000+00:00",
      "title": "CVE-2020-26541"
    }
  ]
}