CVE-2024-11041
📋 TL;DR
CVE-2024-11041 is a critical remote code execution vulnerability in vLLM v0.6.2 where the MessageQueue.dequeue() function uses insecure pickle.loads() to deserialize network data. Attackers can send malicious payloads to execute arbitrary code on vulnerable systems. Anyone running vLLM v0.6.2 with MessageQueue exposed is affected.
💻 Affected Systems
- vllm-project vllm
📦 What is this software?
Vllm by Vllm
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the victim machine, data exfiltration, and lateral movement within the network.
Likely Case
Remote code execution leading to service disruption, data theft, and potential cryptocurrency mining or ransomware deployment.
If Mitigated
Limited impact if proper network segmentation and access controls prevent unauthorized access to the MessageQueue interface.
🎯 Exploit Status
Exploit requires network access to MessageQueue endpoint. The pickle deserialization vulnerability is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.6.3 or later
Vendor Advisory: https://huntr.com/bounties/00136195-11e0-4ad0-98d5-72db066e867f
Restart Required: Yes
Instructions:
1. Stop vLLM service. 2. Upgrade to v0.6.3 or later using pip: 'pip install vllm>=0.6.3'. 3. Restart vLLM service.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to MessageQueue endpoints using firewall rules
iptables -A INPUT -p tcp --dport [MESSAGEQUEUE_PORT] -j DROP
Disable MessageQueue
allDisable MessageQueue functionality if not required
Modify vLLM configuration to disable MessageQueue or remove related code
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vLLM instances from untrusted networks
- Deploy application-level firewalls or WAFs to monitor and block suspicious pickle payloads
🔍 How to Verify
Check if Vulnerable:
Check vLLM version: 'pip show vllm' and verify if version is v0.6.2Check Version:
pip show vllm | grep VersionVerify Fix Applied:
Confirm version is v0.6.3 or later: 'pip show vllm | grep Version'📡 Detection & Monitoring
Log Indicators:
- Unusual pickle deserialization errors
- Suspicious network connections to MessageQueue ports
- Unexpected process execution from vLLM context
Network Indicators:
- Pickle serialized data sent to MessageQueue ports
- Unusual outbound connections from vLLM host
SIEM Query:
source="vllm.log" AND ("pickle.loads" OR "MessageQueue" OR "deserialization")