CVE-2022-30188
📋 TL;DR
CVE-2022-30188 is a remote code execution vulnerability in Microsoft's HEVC Video Extensions that allows attackers to execute arbitrary code by tricking users into opening specially crafted media files. This affects Windows systems with the HEVC Video Extensions installed, typically through the Microsoft Store. Attackers could gain the same user rights as the logged-in user.
💻 Affected Systems
- Microsoft HEVC Video Extensions
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining SYSTEM privileges, installing malware, stealing data, and establishing persistence.
Likely Case
Attacker gains user-level privileges to execute code, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
If Mitigated
Limited impact due to user account restrictions, application sandboxing, or network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires user interaction to open malicious media file. Proof-of-concept code has been published, making weaponization likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HEVC Video Extensions version 1.0.51121.0 or later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30188
Restart Required: No
Instructions:
1. Open Microsoft Store. 2. Search for 'HEVC Video Extensions'. 3. Click 'Get updates' or check for updates. 4. Install available updates. 5. Alternatively, update through Windows Update if extension was installed via system.
🔧 Temporary Workarounds
Uninstall HEVC Video Extensions
windowsRemove the vulnerable component entirely if HEVC video playback is not required
Get-AppxPackage *HEVC* | Remove-AppxPackage
Restrict file execution policies
windowsImplement application control policies to block execution of untrusted media files
🧯 If You Can't Patch
- Implement strict email filtering to block suspicious attachments and links
- Educate users about risks of opening untrusted media files and implement least privilege access
🔍 How to Verify
Check if Vulnerable:
Check HEVC Video Extensions version in Microsoft Store or via PowerShell: Get-AppxPackage *HEVC* | Select Name, VersionCheck Version:
Get-AppxPackage *HEVC* | Select Name, VersionVerify Fix Applied:
Verify version is 1.0.51121.0 or higher using: Get-AppxPackage *HEVC* | Select Version📡 Detection & Monitoring
Log Indicators:
- Windows Event Logs showing HEVC Video Extensions crashes
- Process creation from media player applications with suspicious parameters
Network Indicators:
- Unusual outbound connections from media player processes
- Downloads of suspicious media files from external sources
SIEM Query:
Process Creation where (Image contains 'Video' OR Image contains 'Media') AND CommandLine contains suspicious file extensions (.hevc, .mp4, .mov) from untrusted sources