CVE-2022-24992
📋 TL;DR
This vulnerability in QR Code Generator v5.2.7 allows attackers to perform directory traversal through the process.php component. Attackers can read arbitrary files on the server, potentially exposing sensitive configuration files, credentials, or other data. This affects any system running the vulnerable version of QRCDR QR Code Generator.
💻 Affected Systems
- QRCDR Responsive QR Code Generator
📦 What is this software?
Qr Code Generator by Qr Code Generator Project
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through reading sensitive files like /etc/passwd, database credentials, or SSH keys, leading to lateral movement and data exfiltration.
Likely Case
Unauthorized reading of configuration files, source code, or other sensitive server files that could enable further attacks.
If Mitigated
Limited to reading non-sensitive files if proper file permissions and web server configurations are in place.
🎯 Exploit Status
The vulnerability is simple to exploit with publicly available proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider removing or replacing the software.
🔧 Temporary Workarounds
Input Validation in process.php
allAdd input validation to sanitize file path parameters in process.php
Edit process.php to validate and sanitize all user input before file operations
Web Server Configuration
allConfigure web server to restrict access to sensitive directories
Add appropriate .htaccess rules or nginx location blocks to restrict file access
🧯 If You Can't Patch
- Remove or disable the QR Code Generator application
- Implement network segmentation and restrict access to the affected system
🔍 How to Verify
Check if Vulnerable:
Check if process.php exists and accepts file path parameters without proper validation. Test with a path traversal payload like ../../../etc/passwdCheck Version:
Check the software version in the application files or admin panelVerify Fix Applied:
Verify that path traversal attempts are blocked and return appropriate error responses📡 Detection & Monitoring
Log Indicators:
- Multiple requests to process.php with ../ patterns
- Access to sensitive file paths in web logs
- Unusual file read operations
Network Indicators:
- HTTP requests containing directory traversal sequences to process.php
SIEM Query:
web.url:*process.php* AND (web.url:*../* OR web.url:*..\*)🔗 References
- http://qrcdr.com
- https://codecanyon.net/item/qrcdr-responsive-qr-code-generator/9226839
- https://n0lsec.medium.com/qrcdr-path-traversal-vulnerability-bb89acc0c100
- http://qrcdr.com
- https://codecanyon.net/item/qrcdr-responsive-qr-code-generator/9226839
- https://n0lsec.medium.com/qrcdr-path-traversal-vulnerability-bb89acc0c100
