WID-SEC-W-2023-1586

Vulnerability from csaf_certbund - Published: 2021-09-19 22:00 - Updated: 2023-06-28 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 erhöhen.
Betroffene Betriebssysteme
- Linux
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 seine Privilegien zu erh\u00f6hen.",
        "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-2023-1586 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-1586.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1586 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1586"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2023-2458 vom 2023-06-28",
        "url": "https://oss.oracle.com/pipermail/el-errata/2023-June/014226.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5092-3 vom 2021-10-19",
        "url": "https://ubuntu.com/security/notices/USN-5092-3"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASLIVEPATCH-2021-066 vom 2021-11-04",
        "url": "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-066.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASLIVEPATCH-2021-068 vom 2021-11-04",
        "url": "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-068.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASLIVEPATCH-2021-067 vom 2021-11-04",
        "url": "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-067.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASLIVEPATCH-2021-065 vom 2021-11-04",
        "url": "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-065.html"
      },
      {
        "category": "external",
        "summary": "Mailing list \"OSS Security\" vom 2021-09-18",
        "url": "https://www.openwall.com/lists/oss-security/2021/09/18/2"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-4978 vom 2021-09-25",
        "url": "https://lists.debian.org/debian-security-announce/2021/msg00163.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5092-1 vom 2021-09-28",
        "url": "https://ubuntu.com/security/notices/USN-5092-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5092-2 vom 2021-09-29",
        "url": "https://ubuntu.com/security/notices/USN-5092-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5096-1 vom 2021-09-30",
        "url": "https://ubuntu.com/security/notices/USN-5096-1"
      },
      {
        "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": "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-006 vom 2022-01-31",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-006.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Privilegieneskalation",
    "tracking": {
      "current_release_date": "2023-06-28T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:53:11.245+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2023-1586",
      "initial_release_date": "2021-09-19T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-09-19T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-09-26T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2021-09-27T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-09-28T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-09-29T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-10-06T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-10-18T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2021-11-04T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2022-01-30T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-06-28T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        }
      ],
      "status": "final",
      "version": "10"
    }
  },
  "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 Linux Kernel \u003c= 5.14.6",
            "product": {
              "name": "Open Source Linux Kernel \u003c= 5.14.6",
              "product_id": "T020431",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:5.14.6"
              }
            }
          }
        ],
        "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": "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-2021-41073",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle im Linux Kernel in [fs/io_uring.c] bei \"loop_rw_iter\". Ein lokaler Angreifer mit normalen Benutzerrechten kann \"IORING_OP_PROVIDE_BUFFERS\" verwenden, um ein Freigeben eines Kernelpuffers auszul\u00f6sen. Dies kann zu einer Privilegieneskalation f\u00fchren."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T000126",
          "398363",
          "T004914"
        ],
        "last_affected": [
          "T020431"
        ]
      },
      "release_date": "2021-09-19T22:00:00.000+00:00",
      "title": "CVE-2021-41073"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.