CVE-2023-42404
📋 TL;DR
This vulnerability in OneVision Workspace allows attackers to execute arbitrary Java Expression Language (EL) code, potentially leading to remote code execution. It affects OneVision Workspace installations before WS23.1 SR1 (build w31.040). Organizations using vulnerable versions should prioritize patching.
💻 Affected Systems
- OneVision Workspace
📦 What is this software?
Workspace by Onevision
Workspace by Onevision
Workspace by Onevision
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, data theft, or complete system takeover.
Likely Case
Limited code execution within application context, potentially leading to data exposure or privilege escalation.
If Mitigated
Minimal impact if proper network segmentation and access controls prevent exploitation attempts.
🎯 Exploit Status
CWE-94 indicates code injection vulnerability, but specific exploit details not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: WS23.1 SR1 (build w31.040) or later
Vendor Advisory: https://www.onevision.com/
Restart Required: Yes
Instructions:
1. Download WS23.1 SR1 or later from OneVision support portal. 2. Backup current installation. 3. Apply update following vendor documentation. 4. Restart OneVision Workspace services.
🔧 Temporary Workarounds
Network Isolation
linuxRestrict network access to OneVision Workspace to trusted IPs only
firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="TRUSTED_IP" port port="APP_PORT" protocol="tcp" accept'
firewall-cmd --reload
Application Firewall Rules
allImplement WAF rules to block Java EL injection patterns
WAF configuration depends on specific product - configure rules to detect ${...} patterns and Java EL expressions
🧯 If You Can't Patch
- Implement strict network segmentation and access controls
- Deploy web application firewall with Java EL injection detection rules
🔍 How to Verify
Check if Vulnerable:
Check OneVision Workspace version in admin console or configuration files. If version is earlier than WS23.1 SR1 (build w31.040), system is vulnerable.Check Version:
Check application.properties or admin console for version informationVerify Fix Applied:
Verify version shows WS23.1 SR1 (build w31.040) or later in admin interface.📡 Detection & Monitoring
Log Indicators:
- Unusual Java EL expressions in request logs
- Unexpected process execution from OneVision Workspace
- Error logs containing EL parsing exceptions
Network Indicators:
- HTTP requests containing ${...} patterns to OneVision endpoints
- Unusual outbound connections from OneVision server
SIEM Query:
source="onevision_logs" AND ("${*" OR "#{*" OR "ELException")