CVE-2023-43079
📋 TL;DR
This vulnerability in Dell OpenManage Server Administrator allows local low-privileged users to execute arbitrary code and elevate privileges due to improper access control. Exploitation could lead to complete system compromise. Affects OMSA versions 11.0.0.0 and earlier.
💻 Affected Systems
- Dell OpenManage Server Administrator (OMSA)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative control, data theft, and persistent backdoor installation.
Likely Case
Local privilege escalation leading to unauthorized administrative access on affected servers.
If Mitigated
Limited impact if proper network segmentation and least privilege principles are enforced.
🎯 Exploit Status
Requires local low-privileged access but exploitation appears straightforward based on vulnerability description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to OMSA version 11.0.0.1 or later
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000218469/dsa-2023-367-dell-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
Restart Required: Yes
Instructions:
1. Download latest OMSA version from Dell support site. 2. Backup current configuration. 3. Install update following Dell documentation. 4. Restart system as required.
🔧 Temporary Workarounds
Restrict Local User Access
allLimit local user accounts on affected servers to essential personnel only.
Disable OMSA Service
linuxTemporarily disable OMSA service if not required for operations.
systemctl stop dsm_om_connsvc
systemctl disable dsm_om_connsvc
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected servers
- Apply principle of least privilege to all local user accounts
🔍 How to Verify
Check if Vulnerable:
Check OMSA version via command line: omreport system version or via Windows Add/Remove ProgramsCheck Version:
omreport system versionVerify Fix Applied:
Verify OMSA version is 11.0.0.1 or later using same commands📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation events
- Suspicious process execution from OMSA components
Network Indicators:
- Unusual outbound connections from OMSA services
SIEM Query:
EventID=4688 AND ProcessName LIKE '%OMSA%' AND NewProcessName LIKE '%cmd%' OR '%powershell%'🔗 References
- https://www.dell.com/support/kbdoc/en-us/000218469/dsa-2023-367-dell-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
- https://www.dell.com/support/kbdoc/en-us/000218469/dsa-2023-367-dell-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
