CVE-2023-22582
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into the Danfoss AK-EM100 web applications, which are then reflected back to users' browsers. It affects users of Danfoss AK-EM100 devices with vulnerable web interfaces, potentially leading to session hijacking or credential theft.
💻 Affected Systems
- Danfoss AK-EM100
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal user credentials, hijack sessions, or redirect users to malicious sites, compromising device control and sensitive data.
Likely Case
Attackers may trick users into clicking malicious links, leading to session theft or unauthorized actions on the web interface.
If Mitigated
With input validation and output encoding, the risk is reduced to minimal, preventing script execution.
🎯 Exploit Status
Reflected XSS typically requires user interaction but is easy to exploit with crafted URLs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references; check vendor advisory for details.
Vendor Advisory: https://divd.nl/cves/CVE-2023-22582
Restart Required: Yes
Instructions:
1. Check vendor advisory for patch details. 2. Download and apply the patch from Danfoss. 3. Restart the AK-EM100 device to apply changes.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side input validation and encode output to prevent script injection.
N/A for direct commands; requires code changes in web application.
Web Application Firewall (WAF)
allDeploy a WAF to filter malicious requests and block XSS payloads.
N/A; configure WAF rules to detect and block XSS patterns.
🧯 If You Can't Patch
- Restrict network access to the web interface using firewalls or VLANs to limit exposure.
- Educate users to avoid clicking on untrusted links and implement browser security policies.
🔍 How to Verify
Check if Vulnerable:
Test the web interface by injecting a simple script payload (e.g., <script>alert('test')</script>) into input fields and check if it executes.Check Version:
Check the device web interface or documentation for firmware version; no standard command provided.Verify Fix Applied:
After patching, repeat the test to ensure script payloads are sanitized and do not execute.📡 Detection & Monitoring
Log Indicators:
- Log entries showing suspicious input patterns like script tags or encoded payloads in HTTP requests.
Network Indicators:
- Unusual HTTP requests with XSS payloads to the AK-EM100 web interface.
SIEM Query:
Example: source="ak-em100" AND (http_request CONTAINS "<script>" OR http_request CONTAINS "javascript:")