wid-sec-w-2022-0452
Vulnerability from csaf_certbund
Published
2022-03-10 23:00
Modified
2023-09-07 22:00
Summary
Grub2: Schwachstelle ermöglicht Offenlegung von Informationen

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
Grand Unified Bootloader (Grub) ist ein freies Bootloader-Programm des GNU Projekts.
Angriff
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Grub2 ausnutzen, um Informationen offenzulegen.
Betroffene Betriebssysteme
- UNIX - Linux



{
   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: "Grand Unified Bootloader (Grub) ist ein freies Bootloader-Programm des GNU Projekts.",
            title: "Produktbeschreibung",
         },
         {
            category: "summary",
            text: "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Grub2 ausnutzen, um Informationen offenzulegen.",
            title: "Angriff",
         },
         {
            category: "general",
            text: "- UNIX\n- Linux",
            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-2022-0452 - CSAF Version",
            url: "https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0452.json",
         },
         {
            category: "self",
            summary: "WID-SEC-2022-0452 - Portal Version",
            url: "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0452",
         },
         {
            category: "external",
            summary: "Ubuntu Security Notice USN-6355-1 vom 2023-09-08",
            url: "https://ubuntu.com/security/notices/USN-6355-1",
         },
         {
            category: "external",
            summary: "National Vulnerability Database vom 2022-03-10",
            url: "https://nvd.nist.gov/vuln/detail/CVE-2021-3981",
         },
         {
            category: "external",
            summary: "Amazon Linux Security Advisory ALAS-2022-043 vom 2022-04-22",
            url: "https://alas.aws.amazon.com/AL2022/ALAS-2022-043.html",
         },
         {
            category: "external",
            summary: "Amazon Linux Security Advisory ALAS-2022-1787 vom 2022-04-27",
            url: "https://alas.aws.amazon.com/AL2/ALAS-2022-1787.html",
         },
         {
            category: "external",
            summary: "Red Hat Security Advisory RHSA-2022:2110 vom 2022-05-10",
            url: "https://access.redhat.com/errata/RHSA-2022:2110",
         },
         {
            category: "external",
            summary: "AVAYA Security Advisory ASA-2022-051 vom 2022-06-22",
            url: "https://downloads.avaya.com/css/P8/documents/101082365",
         },
      ],
      source_lang: "en-US",
      title: "Grub2: Schwachstelle ermöglicht Offenlegung von Informationen",
      tracking: {
         current_release_date: "2023-09-07T22:00:00.000+00:00",
         generator: {
            date: "2024-08-15T17:29:15.149+00:00",
            engine: {
               name: "BSI-WID",
               version: "1.3.5",
            },
         },
         id: "WID-SEC-W-2022-0452",
         initial_release_date: "2022-03-10T23:00:00.000+00:00",
         revision_history: [
            {
               date: "2022-03-10T23:00:00.000+00:00",
               number: "1",
               summary: "Initiale Fassung",
            },
            {
               date: "2022-04-24T22:00:00.000+00:00",
               number: "2",
               summary: "Neue Updates von Amazon aufgenommen",
            },
            {
               date: "2022-04-27T22:00:00.000+00:00",
               number: "3",
               summary: "Neue Updates von Amazon aufgenommen",
            },
            {
               date: "2022-05-10T22:00:00.000+00:00",
               number: "4",
               summary: "Neue Updates von Red Hat aufgenommen",
            },
            {
               date: "2022-06-23T22:00:00.000+00:00",
               number: "5",
               summary: "Neue Updates von AVAYA aufgenommen",
            },
            {
               date: "2023-09-07T22:00:00.000+00:00",
               number: "6",
               summary: "Neue Updates von Ubuntu 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: "Avaya Aura Application Enablement Services",
                  product: {
                     name: "Avaya Aura Application Enablement Services",
                     product_id: "T015516",
                     product_identification_helper: {
                        cpe: "cpe:/a:avaya:aura_application_enablement_services:-",
                     },
                  },
               },
               {
                  category: "product_name",
                  name: "Avaya Aura Communication Manager",
                  product: {
                     name: "Avaya Aura Communication Manager",
                     product_id: "T015126",
                     product_identification_helper: {
                        cpe: "cpe:/a:avaya:communication_manager:-",
                     },
                  },
               },
               {
                  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: "product_name",
                  name: "Avaya Aura Session Manager",
                  product: {
                     name: "Avaya Aura Session Manager",
                     product_id: "T015127",
                     product_identification_helper: {
                        cpe: "cpe:/a:avaya:session_manager:-",
                     },
                  },
               },
               {
                  category: "product_name",
                  name: "Avaya Aura System Manager",
                  product: {
                     name: "Avaya Aura System Manager",
                     product_id: "T015518",
                     product_identification_helper: {
                        cpe: "cpe:/a:avaya:aura_system_manager:-",
                     },
                  },
               },
            ],
            category: "vendor",
            name: "Avaya",
         },
         {
            branches: [
               {
                  category: "product_name",
                  name: "Open Source Grub 2 <= 2.06",
                  product: {
                     name: "Open Source Grub 2 <= 2.06",
                     product_id: "T022318",
                     product_identification_helper: {
                        cpe: "cpe:/a:gnu:grub:2.06",
                     },
                  },
               },
            ],
            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-2021-3981",
         notes: [
            {
               category: "description",
               text: "Es existiert eine Schwachstelle in Grub2. Die Datei grub.cfg wird mit einem falschen Berechtigungssatz erstellt, was unprivilegierten Nutzern Lesezugriff ermöglicht. Ein Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen.",
            },
         ],
         product_status: {
            known_affected: [
               "T015519",
               "T015518",
               "67646",
               "T015516",
               "T000126",
               "T015127",
               "398363",
               "T015126",
            ],
            last_affected: [
               "T022318",
            ],
         },
         release_date: "2022-03-10T23:00:00.000+00:00",
         title: "CVE-2021-3981",
      },
   ],
}


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