CVE-2025-47888
📋 TL;DR
The Jenkins DingTalk Plugin 2.7.3 and earlier disables SSL/TLS certificate validation for DingTalk webhook connections, allowing man-in-the-middle attacks. This affects Jenkins instances using the DingTalk Plugin to send notifications to DingTalk. Attackers could intercept or modify webhook data.
💻 Affected Systems
- Jenkins DingTalk Plugin
📦 What is this software?
Dingtalk by Jenkins
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept Jenkins-to-DingTalk communications, stealing sensitive build data, credentials, or injecting malicious content into notifications.
Likely Case
Man-in-the-middle attackers read or modify webhook payloads containing build status, job names, or limited system information.
If Mitigated
With proper network segmentation and monitoring, impact is limited to potential data leakage of non-critical build information.
🎯 Exploit Status
Requires network position to intercept traffic between Jenkins and DingTalk servers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.7.4 or later
Vendor Advisory: https://www.jenkins.io/security/advisory/2025-05-14/#SECURITY-3353
Restart Required: Yes
Instructions:
1. Update Jenkins DingTalk Plugin to version 2.7.4 or later via Jenkins Plugin Manager. 2. Restart Jenkins after update.
🔧 Temporary Workarounds
Disable DingTalk Plugin
allTemporarily disable the plugin if immediate update is not possible.
Navigate to Jenkins > Manage Jenkins > Manage Plugins > Installed tab > Find DingTalk Plugin > Disable
🧯 If You Can't Patch
- Restrict network access to only allow Jenkins to communicate with legitimate DingTalk endpoints.
- Monitor network traffic between Jenkins and DingTalk for unusual patterns or interception attempts.
🔍 How to Verify
Check if Vulnerable:
Check Jenkins Plugin Manager for DingTalk Plugin version. If version is 2.7.3 or earlier and plugin is enabled, system is vulnerable.Check Version:
Check via Jenkins web UI: Manage Jenkins > Manage Plugins > Installed tab > Find DingTalk PluginVerify Fix Applied:
Verify DingTalk Plugin version is 2.7.4 or later in Jenkins Plugin Manager.📡 Detection & Monitoring
Log Indicators:
- Failed SSL/TLS handshake attempts from Jenkins to DingTalk endpoints
- Unusual webhook payload modifications
Network Indicators:
- Unencrypted or improperly validated HTTPS traffic from Jenkins to DingTalk domains
- MITM activity between Jenkins and DingTalk servers
SIEM Query:
source="jenkins" AND (event="webhook_failure" OR event="ssl_error") AND destination_ip="dingtalk_related"