CVE-2023-48373
📋 TL;DR
ITPison OMICARD EDM has a path traversal vulnerability in the 'FileName' parameter that allows unauthenticated remote attackers to bypass authentication and download arbitrary system files. This affects all systems running vulnerable versions of OMICARD EDM software. Attackers can access sensitive files without credentials.
💻 Affected Systems
- ITPison OMICARD EDM
📦 What is this software?
Omicard Edm by Itpison
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through retrieval of configuration files, credentials, or sensitive data leading to further attacks on the network.
Likely Case
Unauthorized access to sensitive files containing system information, configuration data, or potentially credentials.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external exploitation.
🎯 Exploit Status
Path traversal vulnerabilities are commonly exploited with simple HTTP requests; unauthenticated nature makes exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in available references
Vendor Advisory: https://www.twcert.org.tw/tw/cp-132-7592-998bf-1.html
Restart Required: Yes
Instructions:
1. Contact ITPison for patched version 2. Apply vendor-provided patch 3. Restart OMICARD EDM service 4. Verify fix implementation
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to OMICARD EDM to trusted IPs only
firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="TRUSTED_IP" port protocol="tcp" port="PORT" accept'
netsh advfirewall firewall add rule name="OMICARD_EDM" dir=in action=allow protocol=TCP localport=PORT remoteip=TRUSTED_IP
Input Validation via WAF
allImplement web application firewall rules to block path traversal patterns
WAF rule: block requests containing '../' or '..\' in parameters
🧯 If You Can't Patch
- Isolate OMICARD EDM system in separate network segment with strict access controls
- Implement application-level input validation to sanitize FileName parameter
🔍 How to Verify
Check if Vulnerable:
Test by attempting to access system files via crafted FileName parameter (e.g., ../../etc/passwd or ../../windows/win.ini)Check Version:
Check OMICARD EDM administration interface or contact vendor for version informationVerify Fix Applied:
Retest path traversal attempts after patch; successful requests should return error or be blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests with '../' patterns in FileName parameter
- Unauthenticated file access attempts to system paths
Network Indicators:
- Unusual file download patterns from OMICARD EDM service
- Requests for known system files from external sources
SIEM Query:
source="omicard_edm" AND (url="*../*" OR url="*..\\*")