CVE-2022-34396
📋 TL;DR
Dell OpenManage Server Administrator (OMSA) versions 10.3.0.0 and earlier contain a DLL injection vulnerability that allows local authenticated attackers with low privileges to execute arbitrary code with elevated system privileges. This affects systems running vulnerable OMSA versions, potentially leading to complete system compromise.
💻 Affected Systems
- Dell OpenManage Server Administrator (OMSA)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with administrative privileges, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to unauthorized administrative access, configuration changes, or lateral movement within the network.
If Mitigated
Limited to authenticated user access with proper privilege separation and monitoring in place.
🎯 Exploit Status
Requires local authenticated access but exploitation is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.4.0.0 and later
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000206609/dsa-2022-321-dell-openmanage-server-administrator-omsa-security-update-for-dll-injection-vulnerability
Restart Required: Yes
Instructions:
1. Download OMSA version 10.4.0.0 or later from Dell Support. 2. Backup current configuration. 3. Install the update following Dell's installation guide. 4. Restart the system to complete installation.
🔧 Temporary Workarounds
Restrict Local User Access
allLimit local user accounts on systems running OMSA to only essential personnel.
Remove OMSA if Not Required
allUninstall OMSA from systems where it is not essential for operations.
Windows: Control Panel > Programs > Uninstall OMSA
Linux: sudo yum remove srvadmin-* (RHEL/CentOS) or sudo apt remove srvadmin-* (Ubuntu/Debian)
🧯 If You Can't Patch
- Implement strict access controls to limit which users can log into affected systems
- Monitor for suspicious DLL loading or privilege escalation attempts using endpoint detection tools
🔍 How to Verify
Check if Vulnerable:
Check OMSA version: Windows - Open OMSA GUI and check About; Linux - Run 'rpm -qa | grep srvadmin' or 'dpkg -l | grep srvadmin'Check Version:
Windows: Check OMSA GUI About section; Linux: rpm -qa | grep srvadmin-omi (RHEL) or dpkg -l | grep srvadmin-omi (Debian)Verify Fix Applied:
Confirm OMSA version is 10.4.0.0 or later using the same version check commands📡 Detection & Monitoring
Log Indicators:
- Unusual DLL loading by OMSA processes
- Privilege escalation events from OMSA service accounts
- Suspicious process creation from OMSA executables
Network Indicators:
- Unusual outbound connections from OMSA-managed systems
SIEM Query:
Process creation where parent_process contains 'omsa' or 'srvadmin' and (process contains 'cmd.exe' or process contains 'powershell.exe' or process contains 'bash')🔗 References
- https://www.dell.com/support/kbdoc/en-us/000206609/dsa-2022-321-dell-openmanage-server-administrator-omsa-security-update-for-dll-injection-vulnerability
- https://www.dell.com/support/kbdoc/en-us/000206609/dsa-2022-321-dell-openmanage-server-administrator-omsa-security-update-for-dll-injection-vulnerability
