1 检查工具:Acunetix Web Vulnerability Scanner V9破解版
2 检查漏洞说明结果显示:
2.1 HTML Form Without CSRF Protection
2.2 slow_Http_DoS
2.3 If possible, you should set the Secure flag for this cookie
2.4 If possible, you should set the HTTPOnly flag for this cookie
如下图:
3 安全漏洞解决办法
3.1 HTML Form Without CSRF Protection 解决方案:
情况说明,CSRF一般发生在表单Login、登录提交时,处理过程大体上可以总结为在Login.jsp页面上随机产生一个字符串,Set到会话Session内自定义的变量,
然后在Form表单内隐藏一个存放此值的input ytpe ="hidden" 的元素,即可:即如下:
*****Login.jsp********
<%@page import="Java.util.UUID"%>
<%
//deal with CSRF
String uuid = UUID.randomUUID().toString().replaceAll("-", "");
request.getSession().setAttribute("randTxt",uuid);
%>
<form id="welcomeAction_login" name="login" action="welcomeAction_login.do" method="POST">
....
<input type="hidden" name="randSesion" value = "<%=request.getSession().getAttribute("randTxt")%>" />
......
</form>
注意:表单提交时Form头处一定要写上:action="welcomeAction_login.do" method="POST",否则会引出其它相关中级的问题
3.2 slow_Http_DoS解决方案:
原理:通过并发连接池进行的慢速读攻击(基于TCP持久时间)等。慢速攻击基于HTTP协议,通过精心的设计和构造,这种特殊的请求包会造成服务器延时,而当服务器负载能力消耗过大即会导致拒绝服务
解决方案:
1 设置Tomcat / server.xml文件 connectiontimeout 值,默认为20000ms,修改为8000ms(Tomcat 自身安全漏洞)
2 设置AJAX的全局timeout时间(默认为30000ms) $.ajaxSetup({timeout:8000});
3.3 If possible, you should set the Secure flag for this cookie,set the HTTPOnly flag for this cookie解决方案:
1 (Tomcat 自身安全漏洞)设置设置Tomcat / web.xml文件:
<session-config>
<session-timeout>30<session-timeout>
<cookie-config>
<secure>true<secure>
<http-only>true<http-only>
</cookie-config>
<session-config>
2 在Login .jsp主页面加入:
response.setHeader("SET-COOKIE", "JSESSIONID=" + sessionid + "; secure ; HttpOnly");
4 ******涉及内容和网站:
1 CSRF科普 http://www.cnblogs.com/hyddd/archive/2009/04/09/1432744.html
2 CSRF一种解决办法:http://jingyan.baidu.com/album/597a0643671e6a312b524305.html
3 set the Secure flag for this cookie: https://www.owasp.org/index.PHP/SecureFlag
4 set the HTTPOnly flag for this cookie: http://coffeesweet.iteye.com/blog/1271822