CVE-2023-40297
📋 TL;DR
CVE-2023-40297 is a directory traversal vulnerability in Stakater Forecastle that allows attackers to access files outside the intended web directory using encoded path traversal sequences. This affects organizations running Forecastle versions 1.0.139 and earlier. The vulnerability enables unauthorized file reading and potential information disclosure.
💻 Affected Systems
- Stakater Forecastle
⚠️ 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
Attackers could read sensitive system files, configuration files, or credentials stored on the server, potentially leading to complete system compromise.
Likely Case
Unauthorized access to application files, configuration data, or other sensitive information stored in accessible directories.
If Mitigated
Limited impact with proper file permissions and network segmentation preventing access to critical system files.
🎯 Exploit Status
Exploitation requires only web access to the Forecastle instance and knowledge of the directory traversal technique using %5C../ sequences.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.140 or later
Vendor Advisory: https://github.com/stakater/Forecastle/releases
Restart Required: Yes
Instructions:
1. Update Forecastle to version 1.0.140 or later. 2. Restart the Forecastle service. 3. Verify the update was successful.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block directory traversal patterns including encoded sequences like %5C../
Network Segmentation
allRestrict network access to Forecastle instances to only authorized users and systems
🧯 If You Can't Patch
- Implement strict file system permissions to limit what files the Forecastle process can access
- Deploy a reverse proxy with request filtering to block malicious path traversal attempts
🔍 How to Verify
Check if Vulnerable:
Check if Forecastle version is 1.0.139 or earlier. Attempt to access a test file using the directory traversal payload.Check Version:
Check the Forecastle web interface or deployment configuration for version informationVerify Fix Applied:
Verify Forecastle version is 1.0.140 or later. Test that directory traversal attempts are properly blocked.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing %5C../ sequences
- Unusual file access patterns from web requests
- 404 errors for unexpected file paths
Network Indicators:
- HTTP requests with encoded directory traversal patterns
- Unusual file retrieval patterns from the Forecastle service
SIEM Query:
web.url:*%5C../* OR web.uri:*%5C../*