CVE-2021-31217
📋 TL;DR
This vulnerability in SolarWinds DameWare Mini Remote Control Server allows attackers with local access to delete files with SYSTEM privileges due to insecure file permissions. It affects organizations using the vulnerable version of this remote administration tool. The high CVSS score reflects the potential for significant system compromise.
💻 Affected Systems
- SolarWinds DameWare Mini Remote Control Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through deletion of critical system files, leading to denial of service, data loss, or privilege escalation to SYSTEM account.
Likely Case
Local attackers deleting configuration files, logs, or other sensitive data to disrupt operations or cover tracks.
If Mitigated
Limited impact if proper access controls and monitoring are in place to detect unauthorized file operations.
🎯 Exploit Status
Exploitation requires local access to the system. The vulnerability involves insecure file permissions that allow file deletion with elevated privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.2 or later
Vendor Advisory: https://documentation.solarwinds.com/en/success_center/dameware/content/release_notes/dameware_12-2_release_notes.htm
Restart Required: Yes
Instructions:
1. Download DameWare Mini Remote Control version 12.2 or later from SolarWinds. 2. Install the update following vendor instructions. 3. Restart the DameWare service or system as required.
🔧 Temporary Workarounds
Restrict Local Access
windowsLimit local access to systems running DameWare Server to authorized administrators only
Monitor File Deletion Events
windowsEnable auditing for file deletion events on DameWare Server directories
auditpol /set /subcategory:"File System" /success:enable /failure:enable
🧯 If You Can't Patch
- Implement strict access controls to limit who can log into systems running DameWare Server
- Deploy file integrity monitoring on critical DameWare directories and system files
🔍 How to Verify
Check if Vulnerable:
Check DameWare version in Control Panel > Programs and Features. If version is 12.0.1.200, system is vulnerable.Check Version:
wmic product where "name like 'DameWare%'" get versionVerify Fix Applied:
Verify installed version is 12.2 or later. Check that file permissions on DameWare directories are properly restricted.📡 Detection & Monitoring
Log Indicators:
- Unexpected file deletion events in Windows Security logs (Event ID 4663)
- Failed or successful file deletion attempts in DameWare logs
Network Indicators:
- Unusual local authentication patterns to DameWare Server systems
SIEM Query:
EventID=4663 AND ObjectName:"*DameWare*" OR ProcessName:"*DameWare*"🔗 References
- https://documentation.solarwinds.com/en/success_center/dameware/content/release_notes/dameware_12-2_release_notes.htm
- https://support.solarwinds.com/SuccessCenter/s/
- https://documentation.solarwinds.com/en/success_center/dameware/content/release_notes/dameware_12-2_release_notes.htm
- https://support.solarwinds.com/SuccessCenter/s/
