CVE-2025-54769
📋 TL;DR
This vulnerability allows authenticated read-only users to upload files and perform directory traversal attacks, enabling them to overwrite existing PERL modules within the application. This can lead to remote code execution (RCE) by attackers. Systems running affected versions of the software with authenticated user access are at risk.
💻 Affected Systems
- LPAR2RRD
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, allowing attackers to execute arbitrary commands, steal data, install malware, or pivot to other systems.
Likely Case
Attackers gain persistent access to the system, install backdoors, exfiltrate sensitive data, or disrupt application functionality.
If Mitigated
Unauthorized file uploads are blocked, preventing directory traversal and limiting impact to denial of service if uploads are still possible.
🎯 Exploit Status
Exploit details and proof-of-concept are publicly available in security advisories; requires authenticated access but minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 8.00
Vendor Advisory: https://lpar2rrd.com/note800.php
Restart Required: Yes
Instructions:
1. Download LPAR2RRD version 8.00 from the official website. 2. Stop the LPAR2RRD service. 3. Backup current installation and data. 4. Install the new version following vendor instructions. 5. Restart the service.
🔧 Temporary Workarounds
Restrict File Upload Permissions
linuxModify application or system permissions to prevent file uploads by read-only users.
chmod 644 /path/to/upload/directory/*
chown root:root /path/to/upload/directory
Disable Read-Only User Uploads
allConfigure the application to disable file upload functionality for read-only users.
🧯 If You Can't Patch
- Implement strict access controls to limit authenticated user access to trusted sources only.
- Deploy web application firewall (WAF) rules to block directory traversal patterns and suspicious file uploads.
🔍 How to Verify
Check if Vulnerable:
Check if LPAR2RRD version is below 8.00 and if authenticated users can upload files.Check Version:
grep 'version' /path/to/lpar2rrd/installation/*.pl 2>/dev/null | head -1Verify Fix Applied:
Verify installation of version 8.00 and test that authenticated read-only users cannot upload files or perform directory traversal.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload attempts by authenticated users
- Directory traversal patterns in file paths
- Modifications to PERL module files in unexpected locations
Network Indicators:
- HTTP POST requests with file uploads to vulnerable endpoints
- Traffic spikes to upload functionality
SIEM Query:
source="application_logs" AND (event="file_upload" AND user_role="read-only") OR (path CONTAINS "../")