CVE-2023-0454
📋 TL;DR
OrangeScrum version 2.0.11 contains a path traversal vulnerability that allows authenticated attackers to delete arbitrary files on the server. This occurs because user-controlled input is not properly sanitized when constructing file paths. Organizations running OrangeScrum 2.0.11 are affected.
💻 Affected Systems
- OrangeScrum
📦 What is this software?
Orangescrum by Orangescrum
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through deletion of critical system files, leading to service disruption, data loss, or privilege escalation.
Likely Case
Unauthorized deletion of application files, configuration files, or user data causing service disruption and data loss.
If Mitigated
Limited impact if proper file permissions and input validation are implemented, restricting deletion to non-critical files.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.12 or later
Vendor Advisory: https://github.com/Orangescrum/orangescrum/
Restart Required: Yes
Instructions:
1. Backup your OrangeScrum installation and database. 2. Download and install OrangeScrum version 2.0.12 or later from the official repository. 3. Follow the upgrade instructions in the OrangeScrum documentation. 4. Restart the web server and application services.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize file path parameters and prevent directory traversal sequences.
Implement input validation in affected PHP files to filter '../', '..\', and other traversal sequences
File Permission Restriction
linuxRestrict web server user permissions to prevent deletion of critical system files.
chmod 644 /path/to/critical/files
chown root:root /path/to/critical/files
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block path traversal patterns in requests
- Restrict network access to OrangeScrum to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Check OrangeScrum version in admin panel or by examining application files for version 2.0.11.Check Version:
Check OrangeScrum version in admin dashboard or examine version.php file in installation directory.Verify Fix Applied:
Verify installation of OrangeScrum version 2.0.12 or later and test that file deletion functionality properly validates input.📡 Detection & Monitoring
Log Indicators:
- Unusual file deletion events in application logs
- Multiple failed file deletion attempts with traversal patterns
Network Indicators:
- HTTP requests containing '../' or similar traversal sequences in file parameters
SIEM Query:
source="orange_scrum_logs" AND (message="*delete*" AND message="*../*")