WID-SEC-W-2022-0317
Vulnerability from csaf_certbund
Published
2021-12-21 23:00
Modified
2023-09-27 22:00
Summary
Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation

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 seine Privilegien zu erweitern oder einen Denial of Service Zustand herbeizuführen.
Betroffene Betriebssysteme
- Linux


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "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 seine Privilegien zu erweitern oder einen Denial of Service Zustand herbeizuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "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-2022-0317 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0317.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-0317 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0317"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASMICROVM-KERNEL-4.14-2023-001 vom 2023-09-27",
        "url": "https://alas.aws.amazon.com/AL2/ALASMICROVM-KERNEL-4.14-2023-001.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6221-1 vom 2023-07-12",
        "url": "https://ubuntu.com/security/notices/USN-6221-1"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1669-1 vom 2022-05-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011018.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1676-1 vom 2022-05-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011024.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1687-1 vom 2022-05-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011033.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1686-1 vom 2022-05-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011035.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1668-1 vom 2022-05-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011019.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2083-1 vom 2022-06-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011291.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2077-1 vom 2022-06-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011285.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:2082-1 vom 2022-06-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011287.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:5227 vom 2021-12-21",
        "url": "https://access.redhat.com/errata/RHSA-2021:5227"
      },
      {
        "category": "external",
        "summary": "Red Hat Bugzilla - Bug 2013242 vom 2021-12-21",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2013242"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:5241 vom 2021-12-21",
        "url": "https://access.redhat.com/errata/RHSA-2021:5241"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-5227 vom 2021-12-21",
        "url": "http://linux.oracle.com/errata/ELSA-2021-5227.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2843",
        "url": "https://www.debian.org/lts/security/2021/dla-2843"
      },
      {
        "category": "external",
        "summary": "Arch Linux CVE-2021-20321",
        "url": "https://security.archlinux.org/CVE-2021-20321"
      },
      {
        "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-5208-1 vom 2022-01-06",
        "url": "https://ubuntu.com/security/notices/USN-5208-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5209-1 vom 2022-01-06",
        "url": "https://ubuntu.com/security/notices/USN-5209-1"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0043 vom 2022-01-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:0043"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0042 vom 2022-01-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:0042"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0044 vom 2022-01-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:0044"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0047 vom 2022-01-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:0047"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5218-1 vom 2022-01-11",
        "url": "https://ubuntu.com/security/notices/USN-5218-1"
      },
      {
        "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-5.10-2022-007 vom 2022-01-31",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-007.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2022-9088 vom 2022-02-01",
        "url": "https://linux.oracle.com/errata/ELSA-2022-9088.html"
      },
      {
        "category": "external",
        "summary": "ORACLE OVMSA-2022-0007 vom 2022-02-17",
        "url": "https://oss.oracle.com/pipermail/oraclevm-errata/2022-February/001048.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2941 vom 2022-03-09",
        "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-5096 vom 2022-03-09",
        "url": "https://lists.debian.org/debian-security-announce/2022/msg00063.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-2022:2103-1 vom 2022-06-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011299.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-2022:1651-1 vom 2022-05-12",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-May/010994.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-029 vom 2022-07-21",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-029.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-027 vom 2022-07-21",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-027.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-031 vom 2022-07-21",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-031.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Privilegieneskalation",
    "tracking": {
      "current_release_date": "2023-09-27T22:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T16:48:20.676+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2022-0317",
      "initial_release_date": "2021-12-21T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-12-21T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2022-01-05T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-09T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-01-10T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Red Hat und Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-12T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-01-30T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2022-02-01T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2022-02-16T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von ORACLE aufgenommen"
        },
        {
          "date": "2022-03-09T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2022-05-12T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-05-16T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-06-14T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-06-16T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-06-19T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-07-20T22:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2022-07-21T22:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-07-12T22:00:00.000+00:00",
          "number": "17",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-09-27T22:00:00.000+00:00",
          "number": "18",
          "summary": "Neue Updates von Amazon aufgenommen"
        }
      ],
      "status": "final",
      "version": "18"
    }
  },
  "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": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Arch Linux",
            "product": {
              "name": "Open Source Arch Linux",
              "product_id": "T013312",
              "product_identification_helper": {
                "cpe": "cpe:/o:archlinux:archlinux:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "6368",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:-"
              }
            }
          }
        ],
        "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-2021-20321",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle im Linux Kernel aufgrund einer Race Condition im \"overlayfs\" Dateisystemtreiber. Ein lokaler Angreifer, der auf ein eingeh\u00e4ngtes \"overlayfs\"-Dateisystem und das darunter liegende Verzeichnis zugreifen kann, kann dies ausnutzen, um seine Privilegien zu erweitern oder einen Denial of Service Zustand herbeizuf\u00fchren."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "6368",
          "T000126",
          "T013312",
          "398363",
          "T004914"
        ]
      },
      "release_date": "2021-12-21T23:00:00Z",
      "title": "CVE-2021-20321"
    }
  ]
}


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