{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Dhanesh Kizhakkinan with Mandiant"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Critical"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2022-21917 HEVC Video Extensions Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21917"
      },
      {
        "category": "self",
        "summary": "CVE-2022-21917 HEVC Video Extensions Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/2022/msrc_cve-2022-21917.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "HEVC Video Extensions Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2022-01-11T08:00:00.000Z",
      "generator": {
        "date": "2025-01-02T18:22:13.043Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-21917",
      "initial_release_date": "2022-01-11T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2022-01-11T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c1.0.43421.0 \u0026 1.0.43422.0",
            "product": {
              "name": "HEVC Video Extensions \u003c1.0.43421.0 \u0026 1.0.43422.0",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "1.0.43421.0 \u0026 1.0.43422.0",
            "product": {
              "name": "HEVC Video Extensions 1.0.43421.0 \u0026 1.0.43422.0",
              "product_id": "11808"
            }
          }
        ],
        "category": "product_name",
        "name": "HEVC Video Extensions"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-21917",
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "A crafted image file could cause a crash in Explorer during browsing of the directory containing the file.\nThe Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details.\nIt is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers.\nCustomers using the the Volume Licensing Servicing Center can get this update through their organizations.\nIf your device manufacturer preinstalled this app, package versions 1.0.43421.0 and later contain this update.\nIf you purchased this app from the Microsoft Store, package versions 1.0.43422.0 and later contain this update.\nYou can check the package version in PowerShell:\nGet-AppxPackage -Name Microsoft.HEVCVideoExtension*",
          "title": "How could an attacker exploit the vulnerability?"
        },
        {
          "category": "faq",
          "text": "This vulnerability requires an authenticated victim to be tricked into opening a specially crafted media file which could result in remote code execution on the victim\u0027s machine.",
          "title": "How could an attacker exploit the vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "11808"
        ],
        "known_affected": [
          "1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-21917 HEVC Video Extensions Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21917"
        },
        {
          "category": "self",
          "summary": "CVE-2022-21917 HEVC Video Extensions Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21917"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-01-11T08:00:00.000Z",
          "details": "1.0.43421.0 \u0026 1.0.43422.0:Security Update:https://support.microsoft.com/en-us/account-billing/get-updates-for-apps-and-games-in-microsoft-store-a1fe19c0-532d-ec47-7035-d1c5a1dd464f",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/en-us/account-billing/get-updates-for-apps-and-games-in-microsoft-store-a1fe19c0-532d-ec47-7035-d1c5a1dd464f"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.0,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely"
        }
      ],
      "title": "HEVC Video Extensions Remote Code Execution Vulnerability"
    }
  ]
}