CVE-2018-6489
📋 TL;DR
This CVE describes an XML External Entity (XXE) vulnerability in Micro Focus Project and Portfolio Management Center version 9.32. Attackers can exploit this vulnerability to read sensitive files from the server, perform server-side request forgery (SSRF), or potentially cause denial of service. Organizations running the affected version of this enterprise project management software are at risk.
💻 Affected Systems
- Micro Focus Project and Portfolio Management Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise including sensitive file disclosure, internal network reconnaissance via SSRF, and potential remote code execution through file inclusion.
Likely Case
Unauthorized access to sensitive configuration files, credentials, or other server-side data through XXE file reading.
If Mitigated
Limited impact with proper network segmentation, XML parser hardening, and input validation in place.
🎯 Exploit Status
XXE vulnerabilities are well-understood with standard exploitation patterns. While no public PoC exists for this specific CVE, XXE exploitation techniques are widely documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 9.33 or later
Vendor Advisory: https://softwaresupport.softwaregrp.com/document/-/facetsearch/document/KM03014426
Restart Required: Yes
Instructions:
1. Download the patch from Micro Focus support portal. 2. Backup current installation. 3. Apply the patch following vendor instructions. 4. Restart the application services. 5. Verify the fix by checking version number.
🔧 Temporary Workarounds
Disable XXE in XML parser
allConfigure the XML parser to disable external entity processing
Set XML parser properties: FEATURE_SECURE_PROCESSING = true, disallow-doctype-decl = true
Input validation and filtering
allImplement XML input validation to reject malicious payloads
Implement XML schema validation or use allow-lists for XML content
🧯 If You Can't Patch
- Implement network segmentation to isolate the vulnerable system from sensitive internal resources
- Deploy a web application firewall (WAF) with XXE protection rules enabled
🔍 How to Verify
Check if Vulnerable:
Check the application version in the admin interface or configuration files. If version is exactly 9.32, the system is vulnerable.Check Version:
Check application.properties or admin console for version informationVerify Fix Applied:
Verify the version has been updated to 9.33 or later and test XML processing with safe XXE test payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual XML parsing errors
- File access attempts via XML entities
- Large XML payloads with external entity references
Network Indicators:
- XML requests containing SYSTEM or PUBLIC DTD declarations
- Requests to internal resources from the application server
SIEM Query:
source="application_logs" AND (message="*DOCTYPE*" OR message="*ENTITY*" OR message="*SYSTEM*")