CVE-2025-57698
📋 TL;DR
AstrBot Project v3.5.22 contains a directory traversal vulnerability in the plugin upload interface. Attackers can upload files to arbitrary locations on the server filesystem by manipulating filenames with path traversal sequences like '../'. This affects all deployments running the vulnerable version.
💻 Affected Systems
- AstrBot Project
📦 What is this software?
Astrbot by Astrbot
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through arbitrary file write leading to remote code execution, data exfiltration, or system takeover.
Likely Case
Unauthorized file upload to sensitive directories, potentially enabling web shell deployment or configuration file modification.
If Mitigated
Limited impact if file upload functionality is disabled or restricted to authenticated administrators only.
🎯 Exploit Status
Exploitation requires access to the plugin upload interface, which typically requires authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to latest version if vulnerability is fixed, or implement workarounds.
🔧 Temporary Workarounds
Disable Plugin Upload Interface
allRemove or restrict access to the vulnerable '/plugin/install-upload' endpoint.
# Configure web server to block access to /plugin/install-upload
# Example for nginx: location /plugin/install-upload { deny all; }
# Example for Apache: <Location /plugin/install-upload> Require all denied </Location>
Implement Input Validation
allAdd filename sanitization to prevent directory traversal sequences.
# In application code, validate filename before processing
# Example Python: import os; filename = os.path.basename(user_input)
🧯 If You Can't Patch
- Implement strict access controls to limit who can access the plugin upload interface
- Deploy web application firewall (WAF) rules to block directory traversal patterns
🔍 How to Verify
Check if Vulnerable:
Check if running AstrBot Project v3.5.22 and plugin upload feature is enabled.Check Version:
# Check AstrBot version in application interface or configuration filesVerify Fix Applied:
Test if directory traversal attempts are blocked when uploading plugins.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /plugin/install-upload with filenames containing '../' sequences
- File write operations to unexpected directories
Network Indicators:
- POST requests to /plugin/install-upload with unusual filenames
SIEM Query:
source="web_logs" AND uri_path="/plugin/install-upload" AND (filename="*../*" OR filename="*..\\*")