CVE-2023-39259
📋 TL;DR
This vulnerability in Dell OS Recovery Tool allows local authenticated non-administrator users to bypass access controls and gain elevated privileges on the system. It affects users running vulnerable versions of the tool on Windows systems where non-admin users have local access.
💻 Affected Systems
- Dell OS Recovery Tool
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
A local authenticated attacker gains full administrative control over the system, enabling installation of malware, data theft, persistence mechanisms, and lateral movement within the network.
Likely Case
A malicious insider or compromised user account escalates privileges to install unauthorized software, access sensitive files, or modify system configurations.
If Mitigated
With proper access controls and least privilege principles, the impact is limited as non-admin users shouldn't have local access to systems running this tool.
🎯 Exploit Status
Exploitation requires local authenticated access but appears straightforward based on the CWE-284 classification (Improper Access Control).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest version (check Dell support for specific fixed version)
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000217078/dsa-2023-319
Restart Required: Yes
Instructions:
1. Download latest Dell OS Recovery Tool from Dell Support. 2. Uninstall current vulnerable version. 3. Install updated version. 4. Restart system.
🔧 Temporary Workarounds
Remove local user access
windowsPrevent non-administrator users from having local access to systems running Dell OS Recovery Tool
Uninstall vulnerable tool
windowsRemove Dell OS Recovery Tool if not required for system operations
Control Panel > Programs > Uninstall a program > Select Dell OS Recovery Tool > Uninstall
🧯 If You Can't Patch
- Implement strict least privilege access controls - ensure only administrators have local access to affected systems
- Monitor for privilege escalation attempts using security tools and audit local user activities
🔍 How to Verify
Check if Vulnerable:
Check installed programs for Dell OS Recovery Tool version 2.2.4013, 2.3.7012.0, or 2.3.7515.0Check Version:
wmic product where name="Dell OS Recovery Tool" get versionVerify Fix Applied:
Verify Dell OS Recovery Tool is updated to version later than 2.3.7515.0 or removed from system📡 Detection & Monitoring
Log Indicators:
- Windows Event Logs showing non-admin users running Dell OS Recovery Tool with elevated privileges
- Unexpected privilege escalation events in security logs
Network Indicators:
- No network indicators - local exploitation only
SIEM Query:
EventID=4688 AND ProcessName LIKE '%Dell OS Recovery Tool%' AND SubjectUserName NOT IN (admin_users_list)