WID-SEC-W-2024-1950

Vulnerability from csaf_certbund - Published: 2024-08-28 22:00 - Updated: 2024-10-09 22:00
Summary
Linux Kernel: Schwachstelle ermöglicht Denial of Service

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 entfernter, anonymer Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht näher benannte Auswirkungen zu erzielen.
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 entfernter, anonymer Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren oder nicht n\u00e4her benannte Auswirkungen zu erzielen.",
        "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-2024-1950 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1950.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1950 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1950"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2021-4442 vom 2024-08-29",
        "url": "https://lore.kernel.org/linux-cve-announce/2024082945-CVE-2021-4442-0a5f@gregkh/T/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:3566-1 vom 2024-10-09",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-October/019578.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-10-09T22:00:00.000+00:00",
      "generator": {
        "date": "2024-10-10T10:42:37.586+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.8"
        }
      },
      "id": "WID-SEC-W-2024-1950",
      "initial_release_date": "2024-08-28T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-08-28T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2024-10-09T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c4.19.181",
                "product": {
                  "name": "Open Source Linux Kernel \u003c4.19.181",
                  "product_id": "1261204"
                }
              },
              {
                "category": "product_version",
                "name": "4.19.181",
                "product": {
                  "name": "Open Source Linux Kernel 4.19.181",
                  "product_id": "1261204-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:4.19.181"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c5.4.106",
                "product": {
                  "name": "Open Source Linux Kernel \u003c5.4.106",
                  "product_id": "1261487"
                }
              },
              {
                "category": "product_version",
                "name": "5.4.106",
                "product": {
                  "name": "Open Source Linux Kernel 5.4.106",
                  "product_id": "1261487-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.4.106"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c5.11.7",
                "product": {
                  "name": "Open Source Linux Kernel \u003c5.11.7",
                  "product_id": "942382"
                }
              },
              {
                "category": "product_version",
                "name": "5.11.7",
                "product": {
                  "name": "Open Source Linux Kernel 5.11.7",
                  "product_id": "942382-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.11.7"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c5.10.24",
                "product": {
                  "name": "Open Source Linux Kernel \u003c5.10.24",
                  "product_id": "989838"
                }
              },
              {
                "category": "product_version",
                "name": "5.10.24",
                "product": {
                  "name": "Open Source Linux Kernel 5.10.24",
                  "product_id": "989838-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.10.24"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c5.12",
                "product": {
                  "name": "Open Source Linux Kernel \u003c5.12",
                  "product_id": "T022443"
                }
              },
              {
                "category": "product_version",
                "name": "5.12",
                "product": {
                  "name": "Open Source Linux Kernel 5.12",
                  "product_id": "T022443-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.12"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Linux Kernel"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "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"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-4442",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Linux Kernel bei der Verarbeitung von TCP Nachrichten. Ursache sind fehlende Pr\u00fcfungen bez\u00fcglich TCP_QUEUE_SEQ. Ein entfernter, anonymer Angreifer kann dies ausnutzen, um einen Verbindungsabbruch oder andere, nicht n\u00e4her benannte Auswirkungen zu erzielen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T002207",
          "1261487",
          "989838",
          "1261204",
          "T022443",
          "942382"
        ]
      },
      "release_date": "2024-08-28T22:00:00.000+00:00",
      "title": "CVE-2021-4442"
    }
  ]
}


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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.