CVE-2025-63604
📋 TL;DR
This CVE describes a remote code execution vulnerability in baryhuang/mcp-server-aws-resources-python version 0.1.0. Attackers can execute arbitrary Python code through malicious queries, potentially stealing AWS credentials and compromising the system. Anyone using this vulnerable version is affected.
💻 Affected Systems
- baryhuang/mcp-server-aws-resources-python
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise, AWS credential theft leading to unauthorized access to AWS resources, data exfiltration, and lateral movement within cloud environments.
Likely Case
AWS credential theft (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY) leading to unauthorized AWS resource access and potential data exposure.
If Mitigated
Limited impact if proper network segmentation, least privilege AWS IAM policies, and input validation are implemented.
🎯 Exploit Status
The vulnerability involves direct code injection through user input, making exploitation straightforward for attackers with access to the interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/baryhuang/mcp-server-aws-resources-python/issues/8
Restart Required: Yes
Instructions:
1. Monitor the GitHub repository for updates. 2. When a patched version is released, update to it immediately. 3. Restart the service after updating.
🔧 Temporary Workarounds
Disable or Remove Vulnerable Component
allTemporarily disable or remove the mcp-server-aws-resources-python component until a patch is available.
systemctl stop mcp-server-aws-resources-python
pip uninstall mcp-server-aws-resources-python
Network Isolation
linuxRestrict network access to the vulnerable service using firewall rules.
iptables -A INPUT -p tcp --dport [PORT] -j DROP
ufw deny [PORT]
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to trusted sources only.
- Remove AWS credentials from the environment and use IAM roles with minimal permissions instead.
🔍 How to Verify
Check if Vulnerable:
Check the installed version of mcp-server-aws-resources-python using pip show or by examining the package version in your environment.Check Version:
pip show mcp-server-aws-resources-python | grep VersionVerify Fix Applied:
After applying any workaround or patch, verify the component is no longer running or has been updated to a non-vulnerable version.📡 Detection & Monitoring
Log Indicators:
- Unusual query patterns in application logs
- Execution of Python built-in functions like __import__, getattr, hasattr from user input
- Unexpected process spawns or file system access
Network Indicators:
- Unusual outbound connections to AWS endpoints from the server
- Traffic spikes to the service port
SIEM Query:
source="application.log" AND "execute_query" AND ("__import__" OR "getattr" OR "hasattr" OR "exec")