GSD-2021-4207

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
Aliases
Aliases
CVE-2021-4207
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{
  "GSD": {
    "alias": "CVE-2021-4207",
    "description": "A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor-\u003eheader.width` and `cursor-\u003eheader.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.",
    "id": "GSD-2021-4207",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-4207.html",
      "https://www.debian.org/security/2022/dsa-5133",
      "https://access.redhat.com/errata/RHSA-2022:5002",
      "https://ubuntu.com/security/CVE-2021-4207",
      "https://access.redhat.com/errata/RHSA-2022:5821"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-4207"
      ],
      "details": "A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor-\u003eheader.width` and `cursor-\u003eheader.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.",
      "id": "GSD-2021-4207",
      "modified": "2023-12-13T01:23:11.654712Z",
      "schema_version": "1.4.0"
    }
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.5,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2022-11-29T16:21Z",
      "publishedDate": "2022-04-29T17:15Z"
    }
  }
}



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