CVE-2022-47664
📋 TL;DR
CVE-2022-47664 is a buffer overflow vulnerability in Libde265's HEVC video decoding function that could allow attackers to execute arbitrary code or cause denial of service. This affects any application or system using vulnerable versions of Libde265 for HEVC/H.265 video processing. Media players, video editors, and web applications handling HEVC content are potentially impacted.
💻 Affected Systems
- Libde265
- Applications using Libde265 library for HEVC decoding
📦 What is this software?
Libde265 by Struktur
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Application crash or denial of service when processing malicious HEVC video files
If Mitigated
Application crash contained within sandboxed environment with no privilege escalation
🎯 Exploit Status
Exploitation requires crafting malicious HEVC video files; public proof-of-concept demonstrates crash
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Libde265 1.0.10 or later
Vendor Advisory: https://github.com/strukturag/libde265/issues/368
Restart Required: Yes
Instructions:
1. Update Libde265 to version 1.0.10 or later. 2. Rebuild applications using Libde265. 3. Restart affected services. 4. Test HEVC decoding functionality.
🔧 Temporary Workarounds
Disable HEVC decoding
allDisable HEVC/H.265 video processing in applications using Libde265
Application-specific configuration required
Input validation
allImplement strict validation of HEVC video files before processing
Implement file validation in application code
🧯 If You Can't Patch
- Isolate systems using Libde265 in network segments with restricted access
- Implement application sandboxing or containerization to limit exploit impact
🔍 How to Verify
Check if Vulnerable:
Check Libde265 version: ldd --version | grep libde265 or check application dependenciesCheck Version:
pkg-config --modversion libde265Verify Fix Applied:
Verify Libde265 version is 1.0.10 or later and test with known malicious HEVC samples📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in application logs
- Abnormal termination of media processing services
Network Indicators:
- Unusual HEVC file transfers to media servers
- Exploit attempts via crafted video uploads
SIEM Query:
source="application.log" AND ("segmentation fault" OR "buffer overflow" OR "libde265")