CVE-2023-1967
📋 TL;DR
Keysight N8844A Data Analytics Web Service contains a deserialization vulnerability that allows remote attackers to execute arbitrary code by sending specially crafted data. This affects organizations using Keysight's data analytics software in industrial control systems. The vulnerability requires no authentication and has a critical CVSS score of 9.8.
💻 Affected Systems
- Keysight N8844A Data Analytics Web Service
📦 What is this software?
N8844a by Keysight
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary code, disrupt industrial processes, steal sensitive data, and pivot to other network systems.
Likely Case
Remote code execution leading to data theft, system manipulation, and potential ransomware deployment in industrial environments.
If Mitigated
Limited impact if proper network segmentation and access controls prevent exploitation attempts from reaching vulnerable systems.
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited with publicly available tools and techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Keysight advisory for specific version
Vendor Advisory: https://www.keysight.com/us/en/support/software-security.html
Restart Required: Yes
Instructions:
1. Check Keysight security advisory for patch details. 2. Download and apply the patch from Keysight support portal. 3. Restart the N8844A service. 4. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the N8844A service from untrusted networks and internet access
Access Control Lists
allImplement strict firewall rules to limit access to the web service
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems
- Deploy intrusion detection systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check if N8844A Data Analytics Web Service is running and accessible on your networkCheck Version:
Check service version through N8844A web interface or configuration filesVerify Fix Applied:
Verify patch version matches Keysight's security advisory and test service functionality📡 Detection & Monitoring
Log Indicators:
- Unusual deserialization errors in application logs
- Unexpected process creation from web service
Network Indicators:
- Malformed HTTP requests to N8844A web service endpoints
- Unusual outbound connections from the service
SIEM Query:
source="N8844A" AND (event_type="deserialization_error" OR process="cmd.exe" OR process="powershell.exe")