CVE-2024-38878
📋 TL;DR
This vulnerability allows authenticated users to exploit a path traversal flaw in the diagnostics data export API endpoint. Attackers can download arbitrary files from the file system, potentially accessing sensitive configuration files, credentials, or system data. Affected systems include Omnivise T3000 Application Server R9.2 and R8.2 SP3/SP4 versions.
💻 Affected Systems
- Omnivise T3000 Application Server
- Omnivise T3000
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through theft of sensitive files containing credentials, configuration secrets, or proprietary data, leading to operational disruption and data exfiltration.
Likely Case
Unauthorized access to sensitive system files, configuration data, or application secrets that could facilitate further attacks or reconnaissance.
If Mitigated
Limited impact if proper access controls, network segmentation, and file system permissions restrict what authenticated users can access.
🎯 Exploit Status
Exploitation requires authenticated access but uses simple path traversal techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Siemens advisory for specific patched versions
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-857368.html
Restart Required: Yes
Instructions:
1. Review Siemens advisory SSA-857368. 2. Apply vendor-provided patches. 3. Restart affected services. 4. Verify patch application.
🔧 Temporary Workarounds
Restrict API Access
allLimit network access to the vulnerable API endpoint using firewall rules or network segmentation.
File System Permissions
allImplement strict file system permissions to limit what files the application service account can access.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems from sensitive networks.
- Enforce principle of least privilege for all user accounts with access to the system.
🔍 How to Verify
Check if Vulnerable:
Check system version against affected versions list and verify if diagnostics export API is accessible.Check Version:
Consult Siemens documentation for version checking commands specific to Omnivise T3000.Verify Fix Applied:
Verify patch version installation and test that path traversal attempts on the diagnostics export endpoint are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns via diagnostics API
- Multiple failed path traversal attempts
- Large data exports from diagnostics endpoint
Network Indicators:
- Unusual outbound traffic patterns following diagnostics API calls
- Requests to diagnostics endpoint with path traversal patterns (../)
SIEM Query:
source="omnivise_logs" AND (uri="/api/diagnostics/export" OR uri CONTAINS "diagnostics") AND (uri CONTAINS ".." OR uri CONTAINS "%2e%2e")