CVE-2024-57719
📋 TL;DR
Lunasvg v3.0.0 contains a NULL pointer dereference vulnerability in the blend_transformed_tiled_argb.isra.0 component that can cause segmentation faults. This affects applications that process untrusted SVG files using the vulnerable library version. The vulnerability could lead to denial of service or potentially be leveraged for further exploitation.
💻 Affected Systems
- lunasvg
📦 What is this software?
Lunasvg by Sammycage
Lunasvg by Sammycage
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution through memory corruption if combined with other vulnerabilities, or complete application crash leading to denial of service.
Likely Case
Application crash (segmentation fault) when processing malicious SVG files, resulting in denial of service.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially just failed SVG processing.
🎯 Exploit Status
Proof of concept available on GitHub demonstrates crash. Exploitation requires feeding malicious SVG to vulnerable application.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest version > v3.0.0
Vendor Advisory: https://github.com/sammycage/lunasvg/issues/209
Restart Required: Yes
Instructions:
1. Check current lunasvg version. 2. Update to latest version from official repository. 3. Rebuild/redeploy applications using lunasvg. 4. Restart affected services.
🔧 Temporary Workarounds
Input validation
allImplement strict validation of SVG files before processing with lunasvg
Sandbox SVG processing
allIsolate SVG processing in container or separate process to limit crash impact
🧯 If You Can't Patch
- Disable SVG processing functionality if not essential
- Implement WAF rules to block suspicious SVG content patterns
🔍 How to Verify
Check if Vulnerable:
Check if application uses lunasvg v3.0.0 and processes SVG filesCheck Version:
Check build configuration or dependency files for lunasvg versionVerify Fix Applied:
Test with known malicious SVG PoC after update - application should not crash📡 Detection & Monitoring
Log Indicators:
- Segmentation fault errors
- Application crashes during SVG processing
- Unexpected process termination
Network Indicators:
- Unusual SVG file uploads
- Repeated SVG processing requests
SIEM Query:
process.name: "your_app" AND event.type: "crash" AND error.message: "segmentation fault"