i>>? ZKTeco ZKBioSecurity 3.0 (visLogin.jsp) Local Authorization Bypass Vendor: ZKTeco Inc. | Xiamen ZKTeco Biometric Identification Technology Co.,ltd Product web page: http://www.zkteco.com Affected version: Platform: Personnel: Access: Elevator: Visitor: Video: Adms: Summary: ZKBioSecurity3.0 is the ultimate "All in One" web based security platform developed by ZKTeco. It contains four integrated modules: access control, video linkage, elevator control and visitor management. With an optimized system architecture designed for high level biometric identification and a modern-user friendly UI, ZKBioSecurity 3.0 provides the most advanced solution for a whole new user experience. Desc: The issue exist due to the way visLogin.jsp script processes the login request via the 'EnvironmentUtil.getClientIp(request)' method. It runs a check whether the request is coming from the local machine and sets the ip variable to '' if equal to 0:0:0:0:0:0:0:1. The ip variable is then used as a username value with the password '123456' to authenticate and disclose sensitive information and/or do unauthorized actions. Tested on: Microsoft Windows 7 Ultimate SP1 (EN) Microsoft Windows 7 Professional SP1 (EN) Apache-Coyote/1.1 Apache Tomcat/7.0.56 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2016-5367 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5367.php 18.07.2016 -- C:\Program Files (x86)\BioSecurity\MainResource\tomcat\webapps\ROOT\visLogin.jsp: --------------------------------------------------------------------------------- 1: <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2: <%@page import="com.zk.common.util.EnvironmentUtil"%> 3: <% 4: String path = request.getContextPath(); 5: String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 6: 7: String ip= EnvironmentUtil.getClientIp(request); 8: if("0:0:0:0:0:0:0:1".equals(ip)) 9: { 10: ip = ""; 11: } 12: 13: %> 14: 15: 16: 17: --------------------------------------------------------------------------------- # Iranian Exploit DataBase = http://IeDb.Ir [2016-08-31]