CVE-2024-23793
📋 TL;DR
This path traversal vulnerability in OTRS and ((OTRS)) Community Edition allows authenticated users (agents or customers) to upload malicious files to web-accessible directories. This could lead to remote code execution via Perl scripts. Affected versions include OTRS 7.0.X through 7.0.49, 8.0.X, 2023.X, 2024.X through 2024.3.2, and ((OTRS)) Community Edition 6.0.1 through 6.0.34.
💻 Affected Systems
- OTRS
- ((OTRS)) Community Edition
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Unauthorized file upload leading to web shell installation and limited server access.
If Mitigated
File upload blocked or contained with minimal impact if proper file validation and directory restrictions are in place.
🎯 Exploit Status
Exploitation requires authenticated access but path traversal techniques are well-documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: OTRS: 7.0.50, 2024.3.3; ((OTRS)) Community Edition: 6.0.35
Vendor Advisory: https://otrs.com/release-notes/otrs-security-advisory-2024-05/
Restart Required: Yes
Instructions:
1. Backup your OTRS installation and database. 2. Download the patched version from the OTRS website. 3. Follow the official upgrade instructions for your version. 4. Restart the web server and OTRS daemon.
🔧 Temporary Workarounds
Disable file upload feature
allTemporarily disable the file upload functionality in OTRS configuration
Modify OTRS configuration to set 'WebUploadCacheModule' to 'Kernel::System::Web::UploadCache::DB' and restrict file upload permissions
Implement web application firewall rules
allBlock path traversal patterns in file upload requests
Configure WAF to block requests containing '../' or similar path traversal sequences in file upload parameters
🧯 If You Can't Patch
- Restrict file upload permissions to trusted users only
- Implement strict file type validation and scanning for uploaded files
🔍 How to Verify
Check if Vulnerable:
Check OTRS version via admin interface or by examining the installation directory for version filesCheck Version:
Check the OTRS admin interface or examine $OTRS_HOME/RELEASE file for version informationVerify Fix Applied:
Verify the installed version matches or exceeds the patched versions: OTRS 7.0.50+, 2024.3.3+ or ((OTRS)) Community Edition 6.0.35+📡 Detection & Monitoring
Log Indicators:
- Unusual file upload patterns
- Requests containing path traversal sequences (../)
- Uploads of executable files or scripts
Network Indicators:
- HTTP POST requests to file upload endpoints with suspicious filenames
SIEM Query:
source="otrs.log" AND ("../" OR "..\" OR "%2e%2e%2f") AND ("upload" OR "attachment")