CVE-2024-38501
📋 TL;DR
This CVE describes an HTML injection vulnerability that allows unauthenticated remote attackers to inject malicious HTML code with limited length. Successful exploitation could enable attackers to gain low-privileged access to affected devices. The vulnerability affects systems running specific vulnerable software versions.
💻 Affected Systems
- Specific product information not provided in CVE description
📦 What is this software?
Eip\/modbus Firmware by Pepperl Fuchs
Ethernet\/ip Firmware by Pepperl Fuchs
Icdm Rx\/tcp Socketserver Firmware by Pepperl Fuchs
View all CVEs affecting Icdm Rx\/tcp Socketserver Firmware →
Modbus Router Firmware by Pepperl Fuchs
Modbus Server Firmware by Pepperl Fuchs
Modbus Tcp Firmware by Pepperl Fuchs
Profinet Firmware by Pepperl Fuchs
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains low-privileged access to the device, potentially enabling further privilege escalation, data theft, or lateral movement within the network.
Likely Case
Attackers inject malicious HTML to steal session cookies, perform phishing attacks, or redirect users to malicious sites, leading to limited account compromise.
If Mitigated
With proper input validation and output encoding, the injection is prevented, maintaining system integrity with no impact.
🎯 Exploit Status
HTML injection vulnerabilities typically have low exploitation complexity, especially when unauthenticated. Limited injection length may constrain attack payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to vendor advisory for specific patched versions
Vendor Advisory: https://cert.vde.com/en/advisories/VDE-2024-033
Restart Required: Yes
Instructions:
1. Review the vendor advisory at the provided URL. 2. Identify affected products and versions. 3. Apply the recommended patch or update to the fixed version. 4. Restart affected services or devices as required.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation and output encoding to prevent HTML injection
Web Application Firewall (WAF)
allDeploy a WAF with rules to detect and block HTML injection attempts
🧯 If You Can't Patch
- Implement network segmentation to isolate affected devices from untrusted networks
- Deploy intrusion detection systems to monitor for HTML injection attempts
🔍 How to Verify
Check if Vulnerable:
Check system version against vendor advisory and test for HTML injection vulnerabilities using security scanning toolsCheck Version:
System-specific command - consult vendor documentation for version checkingVerify Fix Applied:
Verify patch installation by checking version numbers and conducting security testing to confirm injection is prevented📡 Detection & Monitoring
Log Indicators:
- Unusual HTML or script tags in web request logs
- Multiple failed injection attempts from single IPs
Network Indicators:
- HTTP requests containing suspicious HTML/script payloads
- Unusual traffic patterns to web interfaces
SIEM Query:
source="web_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")