CVE-2022-25211
📋 TL;DR
The Jenkins SWAMP Plugin vulnerability allows attackers with Overall/Read permission to connect to arbitrary web servers using attacker-specified credentials. This missing permission check enables unauthorized connections that could lead to credential theft or further network compromise. Organizations using Jenkins with the SWAMP Plugin version 1.2.6 or earlier are affected.
💻 Affected Systems
- Jenkins SWAMP Plugin
📦 What is this software?
Swamp by Jenkins
⚠️ Risk & Real-World Impact
Worst Case
Attackers could use the plugin to connect to malicious servers, steal credentials, pivot to internal systems, and potentially achieve full system compromise.
Likely Case
Attackers with read access could exfiltrate credentials, connect to internal services, and perform reconnaissance for further attacks.
If Mitigated
With proper access controls and network segmentation, impact is limited to unauthorized connections within the plugin's capabilities.
🎯 Exploit Status
Exploitation requires Jenkins user credentials with Overall/Read permission
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.7
Vendor Advisory: https://www.jenkins.io/security/advisory/2022-02-15/#SECURITY-1988
Restart Required: Yes
Instructions:
1. Update Jenkins SWAMP Plugin to version 1.2.7 or later via Jenkins Plugin Manager. 2. Restart Jenkins service. 3. Verify plugin version in Manage Jenkins > Manage Plugins.
🔧 Temporary Workarounds
Remove SWAMP Plugin
allUninstall the vulnerable plugin if not required
Manage Jenkins > Manage Plugins > Installed > SWAMP Plugin > Uninstall
Restrict Jenkins permissions
allLimit Overall/Read permissions to trusted users only
Manage Jenkins > Manage and Assign Roles > Configure Global Security
🧯 If You Can't Patch
- Implement strict network segmentation to limit Jenkins server outbound connections
- Review and restrict Overall/Read permissions to essential personnel only
🔍 How to Verify
Check if Vulnerable:
Check Jenkins plugin version: Manage Jenkins > Manage Plugins > Installed > SWAMP PluginCheck Version:
java -jar jenkins-cli.jar -s http://jenkins-url/ list-plugins | grep SWAMPVerify Fix Applied:
Verify SWAMP Plugin version is 1.2.7 or later in plugin manager📡 Detection & Monitoring
Log Indicators:
- Unusual SWAMP plugin connection attempts
- Failed authentication attempts from unexpected sources
Network Indicators:
- Outbound connections from Jenkins to unfamiliar IPs/domains
- Unusual traffic patterns from Jenkins server
SIEM Query:
source="jenkins.log" AND ("SWAMP" OR "plugin") AND ("connection" OR "authentication")