怎么检查xss跨站(XSS跨站)

今日搞笑 2022年05月29日
本文导读目录:

如何正确防御xss攻击?

1、基于特征的防御。XSS漏洞和著名的SQL注入漏洞一样,都是利用了Web页面的编写不完善,所以每一个漏洞所利用和针对的弱点都不尽相同,这就是给XSS漏洞防御带来的困难,不可能以单一特征来概括所有XSS攻击。

传统的XSS防御在进行攻击鉴别时多采用特征匹配方式,主要是针对JavaScript这个关键词进行检索,但是这种鉴别不够灵活,凡是提交的信息中各有JavaScript时,就被硬性的判定为XSS攻击。

2、基于代码修改的防御。Web页面开发者在编写程序时往往会出现一些失误或漏洞,XSS攻击正是利用了失误和漏洞,因此一种比较理想的方法就是通过优化Web应用开发来减少漏洞,避免被攻击:

①用户向服务器上提交的信息要对URL和附带的HTTP头、POST数据等进行查询,对不是规定格式、长度的内容进行过滤。

②实现Session标记、CAPTCHA系统或者HTTP引用头检查,以防功能被第三方网站所执行。

③确认接收的内容被妥善的规范化,仅包含最小的、安全的Tag,去掉任何对远程内容的引用,使用HTTP only的cookie。

3、客户端分层防御策略。客户端跨站脚本攻击的分层防御策略是基于独立分配线程和分层防御策略的安全模型。它建立在客户端,这是它与其他模型最大的区别。之所以客户端安全性如此重要,客户端在接受服务器信息,选择性的执行相关内容。这样就可以使防御XSS攻击变得容易,该模型主要由三大部分组成:

①对每一个网页分配独立线程且分析资源消耗的网页线程分析模块;

②包含分层防御策略四个规则的用户输入分析模块;

③保存互联网上有关XSS恶意网站信息的XSS信息数据库。

如何使用深度学习检测XSS

XSS跨站漏洞分为大致三种:储存型XSS,反射型XSS,和DOM型XSS,一般都是由于网站对用户输入的参数过滤不严格而调用浏览器的JS而产生的。XSS几乎每个网站都存在,google,百度,360等都存在,存在和危害范围广,危害安全性大。

我做的网站被漏洞检测说是有什么xss跨站脚本漏洞,怎么修复啊,哪位大侠帮看看!!

你这个页面我没看出来有xss啊,倒是有可能有sql注入漏洞。Title变量要过滤一下啊,要不用户可能会修改Title的内容,比如插入一个单引号,后面跟上自己的sql语句,这样会导致查到一些不该看到的数据库内容,引发注入漏洞。所以,要过滤一些用户提交的数据,把特殊字符全滤掉,百度一些啊asp防注入,有源码的。

xss,假设我是攻击者,我把提交数据的一个变量修改为‘aaaaaaaaaaaa’(post或则get提交的都可以,因为你是request接收的),然后看页面中回显‘aaaaaaaaaaaa’的位置。如果出现了,我可以尝试修改一下加入“”等,破坏掉你的html结构,如果可以破坏,那么我就可以插入javascript代码“script src=.../script”。盗取用户的cookies(所以cookies最好只用httponly),结合beef甚至操作用户的浏览器(权限和功能很低的,别想多了)。

综上所述,你写源码时,必须要检查所有用户可以修改和提交的数据(包括cookies等http头里面的),然后在输出点做好编码。输入与输出控制好了可以减免很多麻烦。

还可以使用安全宝、知道创于等公司提供的云waf服务,这样用户提交的数据会由他们检测,并且给你做好了cdn加速。注意的是,不要把你真实的ip暴露在网上。有的人只做www.test.com的解析,没有做test.com的解析,导致真实ip暴露在网上。

或者使用一些开源的cms,asp的我不了解,php的我知道有wordpress,代码写的很不错了,只要你定期更新版本,不乱下载一些插件(插件都是别人提交的,编程水平不一定很好所以),一般不会出什么大的漏洞。插件也要定期更新。

防止旁站,找主机服务商时要注意(找大的和好的),亚马逊这样的,每个站的权限都是控制的很死的,所以很难提权。

至于社工,安全是一种意识,慢慢培养吧。我了解的就这些了,希望能对你有帮助。

XSS是什么

1、XSS是跨站脚本攻击(Cross Site Scripting),为不和层叠样式表(Cascading Style Sheets, CSS)的缩写混淆,故将跨站脚本攻击缩写为XSS。

2、恶意攻击者往Web页面里插入恶意html代码,当用户浏览该页之时,嵌入其中Web里面的html代码会被执行,从而达到恶意攻击用户的特殊目的。

3、XSS攻击分成两类,一类是来自内部的攻击,主要指的是利用程序自身的漏洞,构造跨站语句,如:dvbbs的showerror.asp存在的跨站漏洞。

4、另一类则是来自外部的攻击,主要指的自己构造XSS跨站漏洞网页或者寻找非目标机以外的有跨站漏洞的网页。如当要渗透一个站点,自己构造一个有跨站漏洞的网页,然后构造跨站语句,通过结合其它技术,如社会工程学等,欺骗目标服务器的管理员打开。

如何测试XSS漏洞

XSS跨站漏洞分为大致三种:储存型XSS,反射型XSS,和DOM型XSS,一般都是由于网站对用户输入的参数过滤不严格而调用浏览器的JS而产生的。XSS几乎每个网站都存在,google,百度,360等都存在,存在和危害范围广,危害安全性大。

具体利用的话:

储存型XSS,一般是构造一个比如说"scriptalert("XSS")/script"的JS的弹窗代码进行测试,看是否提交后在页面弹窗,这种储存型XSS是被写入到页面当中的,如果管理员不处理,那么将永久存在,这种XSS攻击者可以通过留言等提交方式,把恶意代码植入到服务器网站上, 一般用于盗取COOKIE获取管理员的信息和权限。

反射型XSS,一般是在浏览器的输入栏也就是urlget请求那里输入XSS代码,例如:127.0.0.1/admin.php?key="scriptalert("xss")/script,也是弹窗JS代码。当攻击者发送一个带有XSS代码的url参数给受害者,那么受害者可能会使自己的cookie被盗取或者“弹框“,这种XSS一次性使用,危害比储存型要小很多。

dom型:常用于挖掘,是因为api代码审计不严所产生的,这种dom的XSS弹窗可利用和危害性并不是很大,大多用于钓鱼。比起存储型和反射型,DOM型并不常用。

缺点:

1、耗时间

2、有一定几率不成功

3、没有相应的软件来完成自动化攻击

4、前期需要基本的html、js功底,后期需要扎实的html、js、actionscript2/3.0等语言的功底

5、是一种被动的攻击手法

6、对website有http-only、crossdomian.xml没有用

所以楼主如果想更加深层次的学习XSS的话,最好有扎实的前后端开发基础,还要学会代码审计等等。

推荐的话,书籍建议看看《白帽子讲web安全》,《XSS跨站脚本攻击剖析与防御》

一般配合的话,kalilinux里面的BEFF是个很著名的XSS漏洞利用工具,楼主有兴趣可以去看看。

纯手工打字,望楼主采纳。

我来说两句
黑客技术 2年前 (2022-05-29) | 回复
S跨站漏洞分为大致三种:储存型XSS,反射型XSS,和DOM型XSS,一般都是由于网站对用户输入的参数过滤不严格而调用浏览器的JS而产生的。XSS几乎每个网站都存在,google,百度,360等都存在,存在和危害范围广,危害安全性大。具体利用的话:储存型X
黑客技术 2年前 (2022-05-30) | 回复
语句,如:dvbbs的showerror.asp存在的跨站漏洞。4、另一类则是来自外部的攻击,主要指的自己构造XSS跨站漏洞网页或者寻找非目标机以外的有跨站漏洞的网页。如当要渗透一个站点,自己构造一个有跨站漏洞的网页,然后构造跨站语句,通过结合其它技术,如社会工程学等,欺骗目标服务器的管
黑客技术 2年前 (2022-05-30) | 回复
次的学习XSS的话,最好有扎实的前后端开发基础,还要学会代码审计等等。推荐的话,书籍建议看看《白帽子讲web安全》,《XSS跨站脚本攻击剖析与防御》一般配合的话,kalilinux里面的BEFF是个很著名的XSS漏洞利用工具,楼主有兴趣可以
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