CVE-2024-33434
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on systems running vulnerable versions of tiagorlampert CHAOS. The issue stems from unsafe concatenation of user-controlled filename arguments without proper sanitization, enabling command injection. Anyone using CHAOS versions before the specified commits is affected.
💻 Affected Systems
- tiagorlampert CHAOS
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, allowing attackers to install malware, exfiltrate data, or pivot to other systems.
Likely Case
Remote code execution leading to data theft, system manipulation, or deployment of ransomware.
If Mitigated
Limited impact with proper network segmentation and least privilege controls, potentially containing the attack to isolated systems.
🎯 Exploit Status
The vulnerability is straightforward to exploit with publicly available proof-of-concept code, making weaponization highly probable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commits 1b451cf62582295b7225caf5a7b506f0bad56f6b and 24c9e109b5be34df7b2bce8368eae669c481ed5e
Vendor Advisory: https://github.com/tiagorlampert/CHAOS/pull/95
Restart Required: Yes
Instructions:
1. Update to the latest CHAOS version containing the fixes. 2. Replace vulnerable code with the patched version from the GitHub repository. 3. Restart the CHAOS service or application.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for filename parameters before processing.
# Add input validation in the affected code section
# Example: Validate filename contains only alphanumeric characters and safe symbols
import re
if not re.match(r'^[a-zA-Z0-9._-]+$', filename):
raise ValueError('Invalid filename')
Network Access Control
linuxRestrict network access to CHAOS instances using firewalls or network segmentation.
# Example iptables rule to restrict access to specific IPs
sudo iptables -A INPUT -p tcp --dport [CHAOS_PORT] -s [TRUSTED_IP] -j ACCEPT
sudo iptables -A INPUT -p tcp --dport [CHAOS_PORT] -j DROP
🧯 If You Can't Patch
- Isolate affected systems in a segmented network zone with strict egress filtering
- Implement application-level firewalls or WAF rules to block suspicious filename patterns
🔍 How to Verify
Check if Vulnerable:
Check if your CHAOS installation uses code from before the fixed commits. Review the source code for unsafe concatenation of filename arguments.Check Version:
git log --oneline | head -20 # Check commit history for the fixed commitsVerify Fix Applied:
Verify that the code has been updated to include proper input sanitization and no longer contains the vulnerable concatenation pattern.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- Suspicious filename parameters containing shell metacharacters
- Failed authentication attempts followed by command execution
Network Indicators:
- Unexpected outbound connections from CHAOS servers
- Traffic to known malicious IPs or domains
SIEM Query:
source="chaos.log" AND (filename="*;*" OR filename="*|*" OR filename="*`*" OR filename="*$(*" OR filename="*&*" OR filename="*>*" OR filename="*<*")