CVE-2022-30356
📋 TL;DR
OvalEdge versions 5.2.8.0 and earlier contain a privilege escalation vulnerability where authenticated users with OE_ADMIN role privileges can assign arbitrary roles to other users via a POST request to /user/assignuserrole. This allows administrators to elevate privileges beyond their intended scope, potentially granting unauthorized access to sensitive data and functions.
💻 Affected Systems
- OvalEdge
📦 What is this software?
Ovaledge by Ovaledge
⚠️ Risk & Real-World Impact
Worst Case
An attacker with OE_ADMIN access could grant themselves or others full administrative privileges, leading to complete system compromise, data exfiltration, or lateral movement within the environment.
Likely Case
Malicious or compromised administrators could elevate privileges for themselves or accomplices, bypassing intended role-based access controls and accessing sensitive data or functions.
If Mitigated
With proper access controls and monitoring, the impact is limited to authorized administrators misusing their privileges, which can be detected through audit logs.
🎯 Exploit Status
Exploitation requires authenticated access with OE_ADMIN privileges and involves sending a crafted POST request.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.2.8.1 or later
Vendor Advisory: https://cve.offsecguy.com/ovaledge/vulnerabilities/privilege-escalation#cve-2022-30356
Restart Required: Yes
Instructions:
1. Upgrade to OvalEdge version 5.2.8.1 or later. 2. Restart the OvalEdge service. 3. Verify the fix by testing the /user/assignuserrole endpoint.
🔧 Temporary Workarounds
Network Access Control
allRestrict access to the /user/assignuserrole endpoint using web application firewall rules or network segmentation.
Role-Based Access Review
allRegularly audit and review user roles and permissions to detect unauthorized privilege changes.
🧯 If You Can't Patch
- Implement strict access controls and monitoring for users with OE_ADMIN privileges.
- Regularly audit user role assignments and review logs for suspicious activity on the /user/assignuserrole endpoint.
🔍 How to Verify
Check if Vulnerable:
Check if your OvalEdge version is 5.2.8.0 or earlier. If so, and you have OE_ADMIN access, test if you can assign arbitrary roles via POST to /user/assignuserrole.Check Version:
Check the OvalEdge admin interface or configuration files for version information.Verify Fix Applied:
After patching, verify that the /user/assignuserrole endpoint properly validates role assignments and prevents unauthorized privilege escalation.📡 Detection & Monitoring
Log Indicators:
- POST requests to /user/assignuserrole with unusual role parameters
- Sudden changes in user privileges or role assignments
Network Indicators:
- HTTP POST traffic to /user/assignuserrole endpoint with role parameter modifications
SIEM Query:
source="ovaledge" AND url="/user/assignuserrole" AND method="POST"