CVE-2024-31669
📋 TL;DR
Rizin versions before v0.6.3 contain a vulnerability in the PE binary parsing functions that allows attackers to cause uncontrolled resource consumption (denial of service) by feeding specially crafted PE files. This affects anyone using rizin for binary analysis, reverse engineering, or security research. The vulnerability resides in three specific parsing functions.
💻 Affected Systems
- rizin
📦 What is this software?
Rizin by Rizin
⚠️ Risk & Real-World Impact
Worst Case
Complete system resource exhaustion leading to denial of service, potentially crashing the rizin process and consuming significant CPU/memory resources on the host system.
Likely Case
Rizin process crashes or becomes unresponsive when analyzing malicious PE files, disrupting reverse engineering workflows and analysis sessions.
If Mitigated
Limited impact with proper input validation and resource limits in place; may cause temporary process instability but not system-wide issues.
🎯 Exploit Status
Exploitation requires creating specially crafted PE files that trigger the resource consumption bugs in the parsing functions. No public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.6.3 and later
Vendor Advisory: https://github.com/rizinorg/rizin/commit/e42999dda0be7737fafaf5e63c1c5833a72fd9c9
Restart Required: No
Instructions:
1. Update rizin to version v0.6.3 or later using your package manager. 2. For source installations: git clone https://github.com/rizinorg/rizin, checkout v0.6.3+, and rebuild. 3. Verify the update with 'rizin --version'.
🔧 Temporary Workarounds
Avoid parsing untrusted PE files
allDo not use rizin to analyze PE files from untrusted sources until patched.
Implement resource limits
linuxUse system resource limits (ulimit on Linux, Job Objects on Windows) to restrict rizin process resource consumption.
ulimit -v 2097152
ulimit -t 300
🧯 If You Can't Patch
- Isolate rizin usage to dedicated systems with limited resources
- Implement strict file validation before feeding PE files to rizin
🔍 How to Verify
Check if Vulnerable:
Run 'rizin --version' and check if version is below v0.6.3. If version is unknown, assume vulnerable.Check Version:
rizin --versionVerify Fix Applied:
Run 'rizin --version' and confirm version is v0.6.3 or higher. Test with known problematic PE files if available.📡 Detection & Monitoring
Log Indicators:
- Rizin process crashes with segmentation faults
- High CPU/memory usage by rizin processes
- Repeated rizin process restarts
Network Indicators:
- None - this is a local file parsing vulnerability
SIEM Query:
Process:Name='rizin' AND (EventID=1000 OR EventID=1001) OR Process:Name='rizin' AND ResourceUsage:CPU>90%