CVE-2024-57723
📋 TL;DR
CVE-2024-57723 is a segmentation violation vulnerability in lunasvg's composition_source_over component that can cause denial of service or potentially arbitrary code execution when processing malicious SVG files. This affects applications using lunasvg v3.0.0 for SVG rendering. Developers and systems processing untrusted SVG content are at risk.
💻 Affected Systems
- lunasvg
📦 What is this software?
Lunasvg by Sammycage
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if the segmentation violation can be weaponized into memory corruption exploits.
Likely Case
Application crash or denial of service when processing specially crafted SVG files, disrupting SVG rendering functionality.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially causing only application instability.
🎯 Exploit Status
Proof of concept demonstrates crash but not full weaponization. Exploitation requires feeding malicious SVG content to vulnerable applications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v3.1.0 or later
Vendor Advisory: https://github.com/sammycage/lunasvg/issues/209
Restart Required: Yes
Instructions:
1. Update lunasvg to version 3.1.0 or later. 2. Rebuild any applications using lunasvg. 3. Restart affected services.
🔧 Temporary Workarounds
Input Validation
allImplement strict validation of SVG files before processing with lunasvg
Sandbox SVG Processing
allIsolate SVG processing in containerized or sandboxed environments
🧯 If You Can't Patch
- Implement network-level filtering to block SVG file uploads to vulnerable systems
- Deploy application-level monitoring for segmentation faults in SVG processing components
🔍 How to Verify
Check if Vulnerable:
Check if application uses lunasvg v3.0.0 via dependency manifest or by checking linked librariesCheck Version:
Check package manager or build configuration for lunasvg versionVerify Fix Applied:
Verify lunasvg version is 3.1.0 or later and test with known malicious SVG samples📡 Detection & Monitoring
Log Indicators:
- Segmentation fault errors in application logs
- Unexpected process termination during SVG processing
Network Indicators:
- Unusual SVG file uploads to web applications
- SVG files with abnormal structure
SIEM Query:
Process:terminated AND (Error:segmentation_fault OR Error:sigsegv) AND Process:contains:lunasvg