WID-SEC-W-2022-0340
Vulnerability from csaf_certbund
Published
2020-10-04 22:00
Modified
2022-12-26 23:00
Summary
Linux Kernel: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

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
Der Kernel stellt den Kern des Linux Betriebssystems dar.
Angriff
Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme
- Linux - Applicance


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": "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": "2024-02-15T16:48:34.157+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "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": "2020-10-04T22:00:00Z",
      "title": "CVE-2020-26541"
    }
  ]
}


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