WID-SEC-W-2024-1974

Vulnerability from csaf_certbund - Published: 2020-06-08 22:00 - Updated: 2024-09-02 22:00
Summary
QEMU: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
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: QEMU ist eine freie Virtualisierungssoftware, die die gesamte Hardware eines Computers emuliert.
Angriff: Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux - Sonstiges - Windows
CVE-2020-10761

In QEMU besteht eine Schwachstelle im "Network Block Device(NBD) Server Support". Ein Assertion-Fehler kann auftreten, wenn ein nbd-Client eine sehr lange Anfrage sendet. Ein entfernter Angreifer kann dies ausnutzen, um den qemu-nbd-Server zum Absturz zu bringen, was zu einem Denial-of-Service-Zustand führt.

Affected products
Product Identifier Version Remediation
SUSE Linux
SUSE
 cpe:/o:suse:suse_linux:- —
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
Gentoo Linux
Gentoo
 cpe:/o:gentoo:linux:- —
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
References
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": "QEMU ist eine freie Virtualisierungssoftware, die die gesamte Hardware eines Computers emuliert.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\n- Windows",
        "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-2024-1974 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2024-1974.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1974 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1974"
      },
      {
        "category": "external",
        "summary": "Mailing list OSS-Security vom 2020-06-09",
        "url": "https://seclists.org/oss-sec/2020/q2/174"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2020:2015-1 vom 2020-07-23",
        "url": "http://lists.suse.com/pipermail/sle-security-updates/2020-July/007171.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4467-1 vom 2020-08-19",
        "url": "https://usn.ubuntu.com/4467-1/"
      },
      {
        "category": "external",
        "summary": "Gentoo Linux Security Advisory GLSA-202011-09 vom 2020-11-11",
        "url": "https://security.gentoo.org/glsa/202011-09"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4467-2 vom 2021-02-02",
        "url": "https://usn.ubuntu.com/4467-2"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2024-12604 vom 2024-09-02",
        "url": "https://linux.oracle.com/errata/ELSA-2024-12604.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2024-12605 vom 2024-09-02",
        "url": "https://linux.oracle.com/errata/ELSA-2024-12605.html"
      }
    ],
    "source_lang": "en-US",
    "title": "QEMU: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-09-02T22:00:00.000+00:00",
      "generator": {
        "date": "2024-09-03T08:16:04.309+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.6"
        }
      },
      "id": "WID-SEC-W-2024-1974",
      "initial_release_date": "2020-06-08T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2020-06-08T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2020-07-22T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2020-08-19T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2020-11-10T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Gentoo aufgenommen"
        },
        {
          "date": "2021-02-02T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2024-09-02T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        }
      ],
      "status": "final",
      "version": "6"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Gentoo Linux",
            "product": {
              "name": "Gentoo Linux",
              "product_id": "T012167",
              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=4.2",
                "product": {
                  "name": "Open Source QEMU \u003e=4.2",
                  "product_id": "T016687"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003e=4.2",
                "product": {
                  "name": "Open Source QEMU \u003e=4.2",
                  "product_id": "T016687-fixed"
                }
              }
            ],
            "category": "product_name",
            "name": "QEMU"
          }
        ],
        "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": "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-2020-10761",
      "notes": [
        {
          "category": "description",
          "text": "In QEMU besteht eine Schwachstelle im \"Network Block Device(NBD) Server Support\". Ein Assertion-Fehler kann auftreten, wenn ein nbd-Client eine sehr lange Anfrage sendet. Ein entfernter Angreifer kann dies ausnutzen, um den qemu-nbd-Server zum Absturz zu bringen, was zu einem Denial-of-Service-Zustand f\u00fchrt."
        }
      ],
      "product_status": {
        "known_affected": [
          "T002207",
          "T000126",
          "T012167",
          "T004914"
        ]
      },
      "release_date": "2020-06-08T22:00:00.000+00:00",
      "title": "CVE-2020-10761"
    }
  ]
}



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