CVE-2022-1253
📋 TL;DR
CVE-2022-1253 is a heap-based buffer overflow vulnerability in libde265, an open-source H.265/HEVC video codec implementation. This vulnerability allows attackers to execute arbitrary code or cause denial of service by processing specially crafted HEVC video files. Any application or system using vulnerable versions of libde265 to decode HEVC video is affected.
💻 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 with the privileges of the application using libde265, potentially leading to complete system compromise.
Likely Case
Application crash (denial of service) when processing malicious HEVC video files, potentially disrupting video processing services.
If Mitigated
Limited impact if proper sandboxing, privilege separation, and memory protection mechanisms are in place.
🎯 Exploit Status
Exploitation requires crafting a malicious HEVC video file, but no public proof-of-concept has been released. The CVSS 9.8 score indicates critical severity with high attack complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not yet in official release - fix available in commit 8e89fe0e175d2870c39486fdd09250b230ec10b8
Vendor Advisory: https://github.com/strukturag/libde265/commit/8e89fe0e175d2870c39486fdd09250b230ec10b8
Restart Required: Yes
Instructions:
1. Check if your system uses libde265. 2. If using package manager, check for updated packages from your distribution. 3. For source builds, apply commit 8e89fe0e175d2870c39486fdd09250b230ec10b8. 4. Rebuild and reinstall libde265. 5. Restart affected applications.
🔧 Temporary Workarounds
Disable HEVC video processing
allTemporarily disable HEVC video decoding in applications using libde265
Application-specific configuration changes required
Input validation for video files
allImplement strict validation and sanitization of uploaded video files
Implement file type validation, size limits, and scanning before processing
🧯 If You Can't Patch
- Isolate vulnerable systems in network segments with restricted access
- Implement application sandboxing or containerization to limit exploit impact
🔍 How to Verify
Check if Vulnerable:
Check libde265 version: `libde265 --version` or `dpkg -l | grep libde265` or `rpm -qa | grep libde265`Check Version:
libde265 --version 2>/dev/null || dpkg -l libde265 2>/dev/null || rpm -q libde265 2>/dev/null || find /usr -name '*libde265*' -type f 2>/dev/nullVerify Fix Applied:
Verify version is newer than 1.0.8 or check if commit 8e89fe0e175d2870c39486fdd09250b230ec10b8 is applied in source builds📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing video files
- Memory access violation errors in application logs
- Segmentation faults in video processing applications
Network Indicators:
- Unusual uploads of HEVC video files to services
- Spikes in video processing failures
SIEM Query:
source=application_logs ("segmentation fault" OR "memory violation" OR "heap corruption") AND ("libde265" OR "HEVC" OR "video decode")🔗 References
- https://github.com/strukturag/libde265/commit/8e89fe0e175d2870c39486fdd09250b230ec10b8
- https://huntr.dev/bounties/1-other-strukturag/libde265
- https://www.debian.org/security/2023/dsa-5346
- https://github.com/strukturag/libde265/commit/8e89fe0e175d2870c39486fdd09250b230ec10b8
- https://huntr.dev/bounties/1-other-strukturag/libde265
- https://www.debian.org/security/2023/dsa-5346
