Vulnerability-Lookup

OESA-2021-1316 (CVE-2021-3682)

Vulnerability from osv_openeuler – Published: 2021-08-20 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

qemu security update

Details

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.(CVE-2021-3682)

Severity

9.9 (Critical)


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

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3682	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qemu-block-curl-4.1.0-54.oe1.aarch64.rpm",
          "qemu-debuginfo-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-ssh-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-rbd-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-iscsi-4.1.0-54.oe1.aarch64.rpm",
          "qemu-4.1.0-54.oe1.aarch64.rpm",
          "qemu-debugsource-4.1.0-54.oe1.aarch64.rpm",
          "qemu-guest-agent-4.1.0-54.oe1.aarch64.rpm",
          "qemu-img-4.1.0-54.oe1.aarch64.rpm"
        ],
        "noarch": [
          "qemu-help-4.1.0-54.oe1.noarch.rpm"
        ],
        "src": [
          "qemu-4.1.0-54.oe1.src.rpm"
        ],
        "x86_64": [
          "qemu-block-curl-4.1.0-54.oe1.x86_64.rpm",
          "qemu-seabios-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-rbd-4.1.0-54.oe1.x86_64.rpm",
          "qemu-debuginfo-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-ssh-4.1.0-54.oe1.x86_64.rpm",
          "qemu-guest-agent-4.1.0-54.oe1.x86_64.rpm",
          "qemu-4.1.0-54.oe1.x86_64.rpm",
          "qemu-img-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-iscsi-4.1.0-54.oe1.x86_64.rpm",
          "qemu-debugsource-4.1.0-54.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "qemu",
        "purl": "pkg:rpm/openEuler/qemu\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0-54.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "qemu-debugsource-4.1.0-54.oe1.aarch64.rpm",
          "qemu-img-4.1.0-54.oe1.aarch64.rpm",
          "qemu-debuginfo-4.1.0-54.oe1.aarch64.rpm",
          "qemu-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-iscsi-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-ssh-4.1.0-54.oe1.aarch64.rpm",
          "qemu-guest-agent-4.1.0-54.oe1.aarch64.rpm",
          "qemu-block-rbd-4.1.0-54.oe1.aarch64.rpm"
        ],
        "noarch": [
          "qemu-help-4.1.0-54.oe1.noarch.rpm"
        ],
        "src": [
          "qemu-4.1.0-54.oe1.src.rpm"
        ],
        "x86_64": [
          "qemu-4.1.0-54.oe1.x86_64.rpm",
          "qemu-debuginfo-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-rbd-4.1.0-54.oe1.x86_64.rpm",
          "qemu-debugsource-4.1.0-54.oe1.x86_64.rpm",
          "qemu-seabios-4.1.0-54.oe1.x86_64.rpm",
          "qemu-img-4.1.0-54.oe1.x86_64.rpm",
          "qemu-guest-agent-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-ssh-4.1.0-54.oe1.x86_64.rpm",
          "qemu-block-iscsi-4.1.0-54.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "qemu",
        "purl": "pkg:rpm/openEuler/qemu\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0-54.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.(CVE-2021-3682)",
  "id": "OESA-2021-1316",
  "modified": "2026-08-06T11:04:33Z",
  "published": "2021-08-20T11:04:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1316"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3682"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "qemu security update",
  "upstream": [
    "CVE-2021-3682"
  ]
}

CVE-2021-3682 (GCVE-0-2021-3682)

Vulnerability from cvelistv5 – Published: 2021-08-05 19:51 – Updated: 2024-08-03 17:01

Summary

Severity

No CVSS data available.

CWE

CWE-763

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1989651	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021090…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4980	vendor-advisoryx_refsource_DEBIAN
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 6.1.0-rc2

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-03T17:01:07.707Z",
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    "cna": {
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                "product": {
                  "product_data": [
                    {
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2021-1316 (CVE-2021-3682)

CVE-2021-3682 (GCVE-0-2021-3682)

Tags

Sightings

Nomenclature

Related by attack behaviour