CVE-2024-38950
📋 TL;DR
CVE-2024-38950 is a heap buffer overflow vulnerability in Libde265 v1.0.15 that allows attackers to crash applications via crafted payloads to the __interceptor_memcpy function. This affects any software using the vulnerable Libde265 library for HEVC/H.265 video decoding. Attackers can trigger denial of service conditions.
💻 Affected Systems
- Libde265
- Software using Libde265 library for HEVC/H.265 decoding
📦 What is this software?
Libde265 by Struktur
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if combined with other vulnerabilities or memory corruption techniques.
Likely Case
Application crash and denial of service, potentially disrupting video processing services.
If Mitigated
Limited to application crash with proper sandboxing and memory protection mechanisms.
🎯 Exploit Status
Exploit requires crafting malicious HEVC video files. Public PoC demonstrates crash via memcpy overflow.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.0.16 or later
Vendor Advisory: https://github.com/strukturag/libde265/issues/460
Restart Required: Yes
Instructions:
1. Update Libde265 to v1.0.16 or later. 2. Recompile applications using the library. 3. Restart affected services.
🔧 Temporary Workarounds
Disable HEVC processing
allTemporarily disable HEVC/H.265 video processing in applications.
Application-specific configuration changes required
Input validation
allImplement strict validation of HEVC video files before processing.
Implement file validation in application code
🧯 If You Can't Patch
- Isolate vulnerable systems from untrusted networks
- Implement strict file upload restrictions and scanning for HEVC files
🔍 How to Verify
Check if Vulnerable:
Check Libde265 version: ldd --version | grep libde265 or check application dependencies.Check Version:
pkg-config --modversion libde265Verify Fix Applied:
Verify Libde265 version is v1.0.16 or later and test with known malicious HEVC samples.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in system logs
Network Indicators:
- Unusual HEVC file uploads to video processing services
SIEM Query:
source="application.log" AND ("segmentation fault" OR "heap corruption") AND process="*libde265*"