CVE-2023-48371
📋 TL;DR
CVE-2023-48371 is an unauthenticated remote code execution vulnerability in ITPison OMICARD EDM's file upload function. Attackers can upload malicious executable files without authentication and execute arbitrary system commands. This affects all systems running vulnerable versions of OMICARD EDM with the file upload feature enabled.
💻 Affected Systems
- ITPison OMICARD EDM
📦 What is this software?
Omicard Edm by Itpison
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, install malware, exfiltrate data, or disrupt services entirely.
Likely Case
Attackers upload web shells or backdoors to gain persistent access, then pivot to internal networks or deploy ransomware.
If Mitigated
With proper file type validation and authentication, impact is limited to denial of service if uploads are blocked.
🎯 Exploit Status
Simple file upload bypass vulnerabilities are commonly weaponized; unauthenticated access makes exploitation trivial.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references
Vendor Advisory: https://www.twcert.org.tw/tw/cp-132-7590-55002-1.html
Restart Required: Yes
Instructions:
1. Contact ITPison for patched version. 2. Apply vendor-provided patch. 3. Restart OMICARD EDM service. 4. Verify file upload restrictions are properly implemented.
🔧 Temporary Workarounds
Disable file upload functionality
allTemporarily disable the vulnerable file upload feature until patching is complete
Specific commands depend on OMICARD EDM configuration; consult vendor documentation
Implement web application firewall rules
allBlock uploads of executable file types (.exe, .bat, .sh, .php, etc.) at the WAF/load balancer level
WAF-specific configuration required
🧯 If You Can't Patch
- Isolate OMICARD EDM systems from internet and restrict network access to necessary users only
- Implement strict file upload validation at reverse proxy/load balancer level to block dangerous file types
🔍 How to Verify
Check if Vulnerable:
Attempt to upload an executable file (e.g., .exe, .bat) to OMICARD EDM's upload endpoint without authentication. If successful, system is vulnerable.Check Version:
Check OMICARD EDM administration interface or consult vendor documentation for version informationVerify Fix Applied:
After patching, attempt the same upload test; it should be rejected with proper error messages. Verify file type validation is working.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with executable extensions
- Multiple failed authentication attempts followed by successful uploads
- System command execution logs from OMICARD EDM process
Network Indicators:
- POST requests to upload endpoints with executable file contents
- Outbound connections from OMICARD EDM server to suspicious IPs
SIEM Query:
source="omicard_edm_logs" AND (file_extension IN ("exe", "bat", "sh", "php", "jsp") OR cmd_execution=true)