CVE-2024-57823
📋 TL;DR
CVE-2024-57823 is an integer underflow vulnerability in the Raptor RDF Syntax Library's turtle parser that can lead to memory corruption when processing maliciously crafted URIs. This affects all applications using Raptor versions through 2.0.16 for parsing RDF data. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- Raptor RDF Syntax Library
- Applications using Raptor library (e.g., Redland, some semantic web tools)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Denial of service through application crashes or memory corruption, potentially leading to data loss.
If Mitigated
Application crashes with limited impact if proper sandboxing and privilege separation are implemented.
🎯 Exploit Status
Proof-of-concept fuzzing code exists, and the vulnerability is memory corruption that could be leveraged for RCE with additional development.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.17 or later
Vendor Advisory: https://github.com/dajobe/raptor/issues/70
Restart Required: Yes
Instructions:
1. Upgrade Raptor library to version 2.0.17 or later. 2. Recompile any applications using Raptor. 3. Restart affected services.
🔧 Temporary Workarounds
Disable turtle parser
allDisable or restrict use of turtle parser in Raptor configuration
Configure application to avoid raptor_uri_normalize_path() with turtle parser
Input validation
allImplement strict URI validation before passing to Raptor parser
Add URI length and format validation in application code
🧯 If You Can't Patch
- Network segmentation to isolate systems using Raptor
- Implement strict input validation and sanitization for all RDF data inputs
🔍 How to Verify
Check if Vulnerable:
Check Raptor library version: raptor2-config --version or check package managerCheck Version:
raptor2-config --version || dpkg -l | grep raptor || rpm -qa | grep raptorVerify Fix Applied:
Verify version is 2.0.17 or later and test with known malicious URIs📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in system logs
- Unusual URI parsing patterns
Network Indicators:
- Unusual RDF/HTTP requests to applications using Raptor
- Malformed turtle syntax in network traffic
SIEM Query:
source="*raptor*" AND (error="segmentation fault" OR error="memory corruption")