CVE-2025-64150
📋 TL;DR
This vulnerability in Jenkins Publish to Bitbucket Plugin allows attackers with Overall/Read permission to connect to attacker-controlled URLs using stolen Jenkins credentials. Attackers can capture credentials stored in Jenkins, potentially compromising sensitive systems. Only Jenkins instances with this specific plugin installed are affected.
💻 Affected Systems
- Jenkins Publish to Bitbucket Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers exfiltrate all Jenkins credentials, gaining access to downstream systems like source code repositories, deployment servers, and cloud infrastructure.
Likely Case
Attackers capture some Jenkins credentials and use them to access connected systems, potentially leading to data theft or unauthorized deployments.
If Mitigated
With proper credential management and network segmentation, impact is limited to credential exposure without downstream access.
🎯 Exploit Status
Requires attacker to have Jenkins user account with Overall/Read permission and knowledge of credential IDs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.5 or later
Vendor Advisory: https://www.jenkins.io/security/advisory/2025-10-29/#SECURITY-3576
Restart Required: No
Instructions:
1. Access Jenkins web interface
2. Navigate to Manage Jenkins > Manage Plugins
3. Go to Available tab
4. Search for 'Publish to Bitbucket Plugin'
5. Install version 0.5 or later
6. No restart required
🔧 Temporary Workarounds
Remove plugin
allUninstall the vulnerable plugin if not needed
Manage Jenkins > Manage Plugins > Installed tab > Find 'Publish to Bitbucket Plugin' > Uninstall
Restrict permissions
allLimit Overall/Read permissions to trusted users only
Manage Jenkins > Manage and Assign Roles > Configure Global Security > Set appropriate role-based permissions
🧯 If You Can't Patch
- Implement strict credential management with minimal privileges
- Monitor Jenkins logs for suspicious connection attempts to external URLs
🔍 How to Verify
Check if Vulnerable:
Check plugin version in Manage Jenkins > Manage Plugins > Installed tab > Find 'Publish to Bitbucket Plugin'Check Version:
curl -s http://jenkins-host/pluginManager/installed | grep -A5 'Publish to Bitbucket Plugin'Verify Fix Applied:
Verify plugin version is 0.5 or later in the Installed plugins list📡 Detection & Monitoring
Log Indicators:
- Jenkins logs showing connections to unusual external URLs
- Failed authentication attempts using Jenkins credentials
Network Indicators:
- Outbound connections from Jenkins server to unknown IPs on ports 80/443
- Unusual traffic patterns from Jenkins to external services
SIEM Query:
source="jenkins.log" AND ("Publish to Bitbucket" OR "bitbucket" OR "external connection")