CVE-2025-57697
📋 TL;DR
AstrBot Project v3.5.22 contains an arbitrary file read vulnerability in the _encode_image_bs64 function that allows attackers to read any file on the server by manipulating image paths. This affects all deployments running the vulnerable version and can lead to sensitive data exposure including configuration files, credentials, and system files.
💻 Affected Systems
- AstrBot Project
📦 What is this software?
Astrbot by Astrbot
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through reading sensitive files like SSH keys, database credentials, or configuration files containing secrets, potentially leading to lateral movement and data exfiltration.
Likely Case
Sensitive information disclosure including application secrets, user data, and system configuration files that could enable further attacks.
If Mitigated
Limited impact with proper file permissions and network segmentation, restricting access to critical system files.
🎯 Exploit Status
The vulnerability is simple to exploit by crafting malicious requests with path traversal sequences.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Path Sanitization
allImplement strict input validation to prevent path traversal attacks in the _encode_image_bs64 function.
File Access Restriction
linuxConfigure the application to run with minimal file system permissions and restrict access to sensitive directories.
chmod 750 /path/to/astrbot
chown astrobot:astrobot /path/to/astrbot
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with path traversal protection rules
- Restrict network access to the application using firewall rules to trusted sources only
🔍 How to Verify
Check if Vulnerable:
Check if running AstrBot Project v3.5.22 by examining version files or application metadata.Check Version:
Check application configuration files or package manager for version information.Verify Fix Applied:
Test the _encode_image_bs64 function with path traversal payloads to ensure they are rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in application logs
- Requests containing path traversal sequences like '../' or absolute paths
Network Indicators:
- HTTP requests to image endpoints with unusual path parameters
- Multiple sequential requests attempting different file paths
SIEM Query:
source="astrbot.log" AND ("..\/" OR "..\\" OR "/etc/" OR "/root/")