CVE-2019-8982
📋 TL;DR
This vulnerability in WaveMaker Studio 6.6 allows attackers to read local files and perform server-side request forgery (SSRF) attacks by manipulating the download parameter. It affects organizations using vulnerable versions of WaveMaker Studio for application development. The high CVSS score reflects the potential for significant data exposure.
💻 Affected Systems
- WaveMaker Studio
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of server files including configuration files, credentials, and sensitive data, plus ability to attack internal services via SSRF.
Likely Case
Unauthorized access to local files containing application source code, configuration data, or credentials stored on the server.
If Mitigated
Limited impact with proper network segmentation and file system permissions restricting access to sensitive files.
🎯 Exploit Status
Exploit code is publicly available and demonstrates both local file disclosure and SSRF capabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.7 or later
Vendor Advisory: https://www.wavemaker.com/security-advisory/
Restart Required: Yes
Instructions:
1. Upgrade WaveMaker Studio to version 6.7 or later. 2. Restart the WaveMaker Studio service. 3. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Input Validation Filter
allImplement input validation to restrict the 'inUrl' parameter to safe values
Configure web application firewall rules to block requests containing file:// or internal IP patterns in the inUrl parameter
Network Segmentation
allIsolate WaveMaker Studio from sensitive internal networks
Configure firewall rules to restrict outbound connections from WaveMaker Studio server
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WaveMaker Studio from sensitive systems
- Deploy a web application firewall with rules blocking file:// protocols and internal IP ranges in URL parameters
🔍 How to Verify
Check if Vulnerable:
Test the /studioService.download endpoint with file:///etc/passwd in the inUrl parameterCheck Version:
Check WaveMaker Studio version in administration console or configuration filesVerify Fix Applied:
Attempt the same test after patching - should return error or no data📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /studioService.download with file:// or internal IP addresses in parameters
- Unusual file access patterns from WaveMaker Studio process
Network Indicators:
- Outbound connections from WaveMaker Studio to internal services not normally accessed
- Requests to internal IP ranges from external sources
SIEM Query:
source="wavemaker.log" AND (uri="/studioService.download" AND (param="file://" OR param="192.168." OR param="10." OR param="172."))