XSS漏洞防护

主要是添加黑名单进行拦截

 

public class XSSFilter implements Filter {
    private final Log logger = LogFactory.getLog(XSSFilter.class);
    
     // XSS处理Map
    private static  Map<String,String> xssMap = new HashMap<String,String>();
    public void init(FilterConfig filterConfig) throws ServletException {
        
        // 含有脚本： script
        xssMap.put("[s|S][c|C][r|R][i|C][p|P][t|T]", "");
        
        /*16进制的javascript : 6a617661736372697074
             (\\\\x6a|\\\\x4a)  表示的正则含义为  (\x6a|\x4a)
          */ 
        xssMap.put("((\\\\x6a|\\\\x4a)(\\\\x61|\\\\x41)(\\\\x76|\\\\x56)(\\\\x61|\\\\x41)(\\\\x73|\\\\x53)|(\\\\x63|\\\\x43)(\\\\x72|\\\\x52)(\\\\x69|\\\\x49)(\\\\x70|\\\\x50)(\\\\x74|\\\\x54))", "");
        
        /*16进制的script : 736372697074
         (\\\\x6a|\\\\x4a)  表示的正则含义为  (\x6a|\x4a)
         */ 
        xssMap.put("((\\\\x73|\\\\x53)|(\\\\x63|\\\\x43)(\\\\x72|\\\\x52)(\\\\x69|\\\\x49)(\\\\x70|\\\\x50)(\\\\x74|\\\\x54))", "");

        
        // 含有脚本 javascript
        xssMap.put("[\\\"\\\'][\\s]*[j|J][a|A][v|V][a|A][s|S][c|C][r|R][i|I][p|P][t|T]:(.*)[\\\"\\\']", "\"\"");

        // 含有函数： eval
        xssMap.put("[e|E][v|V][a|A][l|L]\\((.*)\\)", "");
        
        // 含有符号 (
        xssMap.put("\\(", "（");

        // 含有符号 )
        xssMap.put("\\)", "）");

    }

    public void destroy() {

    }

    public void doFilter(ServletRequest request, ServletResponse response,

            FilterChain chain) throws IOException, ServletException {
        chain.doFilter(new XssHttpServletRequestWrapper((HttpServletRequest) request , xssMap), response);
    }
}

Filter