Vulnerability-Lookup

CVE-2021-3930 (GCVE-0-2021-3930)

Vulnerability from cvelistv5 – Published: 2022-02-18 17:50 – Updated: 2024-08-03 17:09

Summary

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-193

Assigner

redhat

References

5 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2020588	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2022022…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202208-27	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	QEMU	Affected: qemu-kvm 6.2.0-rc0

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Tracking\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202208-27\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20220225-0007/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2020588\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202208-27\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20220225-0007/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:48:48+00:00",
      "cve": "CVE-2021-3930",
      "id": "CVE-2021-3930",
      "initial_release_date": "2021-02-04T00:00:00+00:00",
      "product_status:fixed": "2515",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "24",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "QEMU: off-by-one error in mode_sense_page() in hw/scsi/scsi-disk.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3930.json",
      "version": "3"
    }
  }
}

WID-SEC-W-2022-1122

Vulnerability from csaf_certbund - Published: 2021-11-07 23:00 - 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 lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme: - Linux

CVE-2021-3930

Es existiert eine Schwachstelle in QEMU. Die Schwachstelle besteht in der SCSI-Geräte Emulation und ist auf einen off-by-one-error zurückzuführen. Ein lokaler Angreifer der als Gast angemeldet ist, kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen.

Affected products

Known affected 8 products

Product	Identifier	Version
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Open Source QEMU Open Source	`cpe:/a:qemu:qemu:-`	—
Gentoo Linux Gentoo	`cpe:/o:gentoo:linux:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—

References

21 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://access.redhat.com/security/cve/CVE-2021-3930	external
https://bugzilla.redhat.com/show_bug.cgi?id=2020588	external
https://access.redhat.com/errata/RHSA-2021:5065	external
https://access.redhat.com/errata/RHSA-2021:5238	external
http://linux.oracle.com/errata/ELSA-2021-5238.html	external
http://linux.oracle.com/errata/ELSA-2021-9638.html	external
https://access.redhat.com/errata/RHSA-2022:0081	external
https://linux.oracle.com/errata/ELSA-2022-9172.html	external
https://ubuntu.com/security/notices/USN-5307-1	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.debian.org/debian-lts-announce/2022…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://security.gentoo.org/glsa/202208-27	external
https://lists.debian.org/debian-lts-announce/2022…	external
https://ubuntu.com/security/notices/USN-5772-1	external
https://alas.aws.amazon.com/AL2/ALAS-2023-2061.html	external
https://linux.oracle.com/errata/ELSA-2024-12604.html	external
https://linux.oracle.com/errata/ELSA-2024-12605.html	external

JSON

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 lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuf\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-2022-1122 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1122.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-1122 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-1122"
      },
      {
        "category": "external",
        "summary": "RedHat Security Advisory CVE-2021-3930 vom 2021-11-07",
        "url": "https://access.redhat.com/security/cve/CVE-2021-3930"
      },
      {
        "category": "external",
        "summary": "RedHat Bugzilla Bug 2020588 vom 2021-11-07",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020588"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:5065 vom 2021-12-09",
        "url": "https://access.redhat.com/errata/RHSA-2021:5065"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:5238 vom 2021-12-21",
        "url": "https://access.redhat.com/errata/RHSA-2021:5238"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-5238 vom 2021-12-23",
        "url": "http://linux.oracle.com/errata/ELSA-2021-5238.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-9638 vom 2022-01-04",
        "url": "http://linux.oracle.com/errata/ELSA-2021-9638.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0081 vom 2022-01-11",
        "url": "https://access.redhat.com/errata/RHSA-2022:0081"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2022-9172 vom 2022-02-25",
        "url": "https://linux.oracle.com/errata/ELSA-2022-9172.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5307-1 vom 2022-02-28",
        "url": "https://ubuntu.com/security/notices/USN-5307-1"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:0930-1 vom 2022-03-22",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-March/010498.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2970 vom 2022-04-04",
        "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:1151-1 vom 2022-04-11",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010676.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:0930-2 vom 2022-04-20",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010778.html"
      },
      {
        "category": "external",
        "summary": "Gentoo Linux Security Advisory GLSA-202208-27 vom 2022-08-23",
        "url": "https://security.gentoo.org/glsa/202208-27"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-3099 vom 2022-09-05",
        "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5772-1 vom 2022-12-12",
        "url": "https://ubuntu.com/security/notices/USN-5772-1"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2023-2061 vom 2023-06-05",
        "url": "https://alas.aws.amazon.com/AL2/ALAS-2023-2061.html"
      },
      {
        "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": "2024-09-03T08:15:33.656+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.6"
        }
      },
      "id": "WID-SEC-W-2022-1122",
      "initial_release_date": "2021-11-07T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-11-07T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-12-09T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-12-21T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-12-22T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2022-01-04T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2022-01-11T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-02-24T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2022-02-28T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-03-22T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-04-04T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2022-04-11T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-04-20T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-08-22T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Gentoo aufgenommen"
        },
        {
          "date": "2022-09-04T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2022-12-11T23:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-06-05T22:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2024-09-02T22:00:00.000+00:00",
          "number": "17",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        }
      ],
      "status": "final",
      "version": "17"
    }
  },
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              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
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            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
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      {
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            "category": "product_name",
            "name": "Open Source QEMU",
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              "name": "Open Source QEMU",
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              "product_identification_helper": {
                "cpe": "cpe:/a:qemu:qemu:-"
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        ],
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      },
      {
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        ],
        "category": "vendor",
        "name": "Oracle"
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      {
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              "name": "Ubuntu Linux",
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              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-3930",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in QEMU. Die Schwachstelle besteht in der SCSI-Ger\u00e4te Emulation und ist auf einen off-by-one-error zur\u00fcckzuf\u00fchren. Ein lokaler Angreifer der als Gast angemeldet ist, kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "T000126",
          "398363",
          "T007150",
          "T012167",
          "T004914"
        ]
      },
      "release_date": "2021-11-07T23:00:00.000+00:00",
      "title": "CVE-2021-3930"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

CVE-2021-3930 (GCVE-0-2021-3930)

WID-SEC-W-2022-1122

Tags

Sightings

Nomenclature