CVE-2023-47004
📋 TL;DR
This is an authenticated buffer overflow vulnerability in RedisGraph that allows remote code execution. Attackers with valid authentication can exploit this to execute arbitrary code on affected RedisGraph servers. Organizations using RedisGraph versions 2.x through 2.12.8 are affected.
💻 Affected Systems
- RedisGraph
📦 What is this software?
Redisgraph by Redislabs
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining root/system-level access to execute arbitrary code, potentially leading to data theft, ransomware deployment, or complete system takeover.
Likely Case
Privilege escalation leading to unauthorized data access, service disruption, or lateral movement within the network.
If Mitigated
Limited impact due to network segmentation, minimal privileges, and proper authentication controls restricting access to authorized users only.
🎯 Exploit Status
Exploitation requires valid authentication credentials. Buffer overflow occurs in code logic after authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.12.9
Vendor Advisory: https://github.com/RedisGraph/RedisGraph/issues/3178
Restart Required: Yes
Instructions:
1. Stop RedisGraph service. 2. Update RedisGraph to version 2.12.9 or later. 3. Restart RedisGraph service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Network Access
linuxLimit RedisGraph access to trusted networks only using firewall rules.
iptables -A INPUT -p tcp --dport 6379 -s trusted_ip_range -j ACCEPT
iptables -A INPUT -p tcp --dport 6379 -j DROP
Implement Strong Authentication
allEnforce strong, unique passwords and consider multi-factor authentication where possible.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate RedisGraph instances
- Apply principle of least privilege to RedisGraph service accounts and authentication
🔍 How to Verify
Check if Vulnerable:
Check RedisGraph version: redis-cli GRAPH.QUERY G "CALL dbms.components() YIELD name, versions RETURN name, versions"Check Version:
redis-cli GRAPH.QUERY G "CALL dbms.components() YIELD name, versions RETURN name, versions"Verify Fix Applied:
Verify version is 2.12.9 or higher using the same command and ensure no buffer overflow occurs during normal operations.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts
- Large or malformed queries to RedisGraph
- Process crashes or abnormal restarts of RedisGraph
Network Indicators:
- Unusual traffic patterns to RedisGraph port (default 6379)
- Suspicious payloads in RedisGraph queries
SIEM Query:
source="redisgraph.log" AND ("buffer overflow" OR "segmentation fault" OR "authentication failed" OR "malformed query")