CVE-2017-6187
📋 TL;DR
CVE-2017-6187 is a critical buffer overflow vulnerability in DiskSavvy Enterprise's built-in web server that allows remote attackers to execute arbitrary code by sending a specially crafted long URI in a GET request. This affects all systems running the vulnerable version of DiskSavvy Enterprise with the web server enabled. Attackers can gain complete control over affected systems without authentication.
💻 Affected Systems
- DiskSavvy Enterprise
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, ransomware deployment, or use as a pivot point in network attacks.
Likely Case
Remote code execution resulting in malware installation, data exfiltration, or system takeover for botnet participation.
If Mitigated
Limited impact if web server is disabled or network access is restricted, though the vulnerability remains present in the software.
🎯 Exploit Status
Public exploit code is available on Exploit-DB (ID 41436), making exploitation trivial for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.5.14 or later
Vendor Advisory: https://www.disksavvy.com/
Restart Required: Yes
Instructions:
1. Download latest version from DiskSavvy website. 2. Install over existing installation. 3. Restart the DiskSavvy service or reboot system.
🔧 Temporary Workarounds
Disable Built-in Web Server
windowsDisable the vulnerable web server component to prevent remote exploitation.
Open DiskSavvy Enterprise > Settings > Web Server > Uncheck 'Enable Web Server'
Network Segmentation
windowsRestrict network access to DiskSavvy web server port (default 80/8080).
Windows Firewall: netsh advfirewall firewall add rule name="Block DiskSavvy" dir=in action=block protocol=TCP localport=80,8080 program="C:\Program Files\DiskSavvy\disksavvy.exe"
🧯 If You Can't Patch
- Disable the built-in web server immediately in DiskSavvy settings
- Implement strict network access controls to block all external and unnecessary internal access to the DiskSavvy service port
🔍 How to Verify
Check if Vulnerable:
Check DiskSavvy version in Help > About. If version is 9.4.18 or earlier, and web server is enabled, system is vulnerable.Check Version:
In DiskSavvy: Help > About shows version. Command line: wmic product where name="DiskSavvy Enterprise" get versionVerify Fix Applied:
Verify version is 9.5.14 or later in Help > About, and test with a long URI GET request to confirm no crash occurs.📡 Detection & Monitoring
Log Indicators:
- DiskSavvy service crashes
- Unusually long URI requests in web server logs
- Memory access violation errors in Windows Event Logs
Network Indicators:
- HTTP GET requests with URIs longer than typical (1000+ characters)
- Traffic to DiskSavvy web server port (80/8080) with abnormal patterns
SIEM Query:
source="disksavvy.log" AND (uri_length>1000 OR "buffer overflow" OR "access violation") OR source="Windows Security" AND process_name="disksavvy.exe" AND event_id=1000