CVE-2022-46756
📋 TL;DR
This vulnerability allows a local high-privileged attacker to escape container isolation and execute arbitrary operating system commands on the underlying host. It affects Dell VxRail hyperconverged infrastructure systems running versions prior to 7.0.410. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Dell VxRail
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover where attacker gains full control of the underlying host OS, potentially compromising the entire VxRail cluster and all hosted workloads.
Likely Case
Privilege escalation from container to host OS, allowing attacker to execute arbitrary commands, access sensitive data, and pivot to other systems in the environment.
If Mitigated
Limited impact if proper access controls restrict local high-privileged users and container escape attempts are monitored and blocked.
🎯 Exploit Status
Exploitation requires local high-privileged access within a container. No public exploit code has been disclosed as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.410 or later
Vendor Advisory: https://www.dell.com/support/kbdoc/000206943
Restart Required: Yes
Instructions:
1. Download VxRail 7.0.410 or later from Dell support portal. 2. Follow Dell's VxRail upgrade procedures. 3. Apply the update through VxRail Manager. 4. Reboot the system as required.
🔧 Temporary Workarounds
Restrict container privileges
allImplement least privilege principles for container users and restrict capabilities to prevent container escape.
# Review and modify container security policies
# Use security contexts with minimal privileges
# Implement PodSecurityPolicies or equivalent
🧯 If You Can't Patch
- Implement strict access controls to limit local high-privileged users on VxRail systems.
- Monitor for container escape attempts using security tools and audit logs.
🔍 How to Verify
Check if Vulnerable:
Check VxRail version via VxRail Manager or CLI. If version is below 7.0.410, system is vulnerable.Check Version:
vxrail version or check in VxRail Manager web interfaceVerify Fix Applied:
Confirm VxRail version is 7.0.410 or higher after applying the update.📡 Detection & Monitoring
Log Indicators:
- Unusual container-to-host process execution
- Privilege escalation attempts from container context
- Suspicious system command execution from container users
Network Indicators:
- Unexpected outbound connections from VxRail management interfaces
SIEM Query:
source="vxrail" AND (event="container_escape" OR event="privilege_escalation" OR cmd="host_execution")