CVE-2023-3442
📋 TL;DR
This CVE describes a missing authorization vulnerability in the Jenkins ServiceNow DevOps plugin versions before 1.38.1. Attackers could exploit this to access sensitive information without proper authentication. Organizations using vulnerable versions of this Jenkins plugin are affected.
💻 Affected Systems
- Jenkins ServiceNow DevOps Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized actors could access sensitive credentials, API keys, or configuration data stored in Jenkins, potentially leading to further system compromise.
Likely Case
Internal or external attackers could retrieve ServiceNow credentials or other sensitive plugin configuration data.
If Mitigated
With proper network segmentation and access controls, impact would be limited to authorized users only.
🎯 Exploit Status
Exploitation requires access to Jenkins but no specific authentication for the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.38.1
Vendor Advisory: https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1434119
Restart Required: Yes
Instructions:
1. Access Jenkins web interface. 2. Navigate to Manage Jenkins > Manage Plugins. 3. Go to Available tab. 4. Search for 'ServiceNow DevOps'. 5. Check the box and click Install without restart. 6. Restart Jenkins after installation completes.
🔧 Temporary Workarounds
Restrict Jenkins Access
allLimit network access to Jenkins to only authorized users and systems
Disable Plugin
allTemporarily disable the ServiceNow DevOps plugin if not immediately needed
Navigate to Manage Jenkins > Manage Plugins > Installed tab, find ServiceNow DevOps plugin and disable
🧯 If You Can't Patch
- Implement strict network access controls to limit Jenkins access to trusted IPs only
- Monitor Jenkins access logs for unauthorized access attempts to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check Jenkins plugin manager for ServiceNow DevOps plugin version. If version is less than 1.38.1, system is vulnerable.Check Version:
Check Jenkins web interface: Manage Jenkins > Manage Plugins > Installed tab, find ServiceNow DevOps pluginVerify Fix Applied:
Verify ServiceNow DevOps plugin version shows 1.38.1 or higher in Jenkins plugin manager.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to ServiceNow DevOps plugin endpoints in Jenkins access logs
- Unusual authentication patterns for plugin-related operations
Network Indicators:
- Unexpected requests to Jenkins ServiceNow plugin endpoints from unauthorized sources
SIEM Query:
source="jenkins_access.log" AND (uri="/plugin/sn-devops" OR uri CONTAINS "sn-devops") AND (user="anonymous" OR auth_status="failed")