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移动互联网技术,大连谷歌seo,营销qq软件,网站推广有哪些方式XSS 1.XSS 漏洞简介2.XSS的原理3.XSS的攻击方式4.XSS-GAMESMa SpaghetJefffUgandan KnucklesRicardo MilosAh Thats HawtLigmaMafiaOk, BoomerWW3svg 1.XSS 漏洞简介 XSS又叫CSS（Cross Site Script）跨站脚本攻击是指恶意攻击者往Web页面里插入恶意Sc…

XSS

- - 1.XSS 漏洞简介
  - 2.XSS的原理
  - 3.XSS的攻击方式
  - 4.XSS-GAMES
  - - - Ma Spaghet
      - Jefff
      - Ugandan Knuckles
      - Ricardo Milos
      - Ah That's Hawt
      - Ligma
      - Mafia
      - Ok, Boomer
      - WW3
      - svg

1.XSS 漏洞简介

XSS又叫CSS（Cross Site Script）跨站脚本攻击是指恶意攻击者往Web页面里插入恶意Script代码，当用户浏览该页之时，嵌入其中Web里面的Script代码会被执行，从而达到恶意攻击用户的目的。

2.XSS的原理

攻击者对含有漏洞的服务器发起XSS攻击（注入JS代码）。
诱使受害者打开受到攻击的服务器URL。
受害者在Web浏览器中打开URL，恶意脚本执行。

3.XSS的攻击方式

反射型XSS：<非持久化> 攻击者事先制作好攻击链接, 需要欺骗用户自己去点击链接才能触发XSS代码（服务器中没有这样的页面和内容），一般容易出现在搜索页面。一般是后端代码进行处理

存储型XSS：<持久化> 代码是存储在服务器数据库中的，如在个人信息或发表文章等地方，加入代码，如果没有过滤或过滤不严，那么这些代码将储存到服务器中，每当有用户访问该页面的时候都会触发代码执行，这种XSS非常危险，容易造成蠕虫，大量盗窃cookie（虽然还有种DOM型XSS，但是也还是包括在存储型XSS内）。

DOM型XSS：基于文档对象模型Document Objeet Model，DOM)的一种漏洞。DOM是一个与平台、编程语言无关的接口，它允许程序或脚本动态地访问和更新文档内容、结构和样式，处理后的结果能够成为显示页面的一部分。

4.XSS-GAMES

链接我放在这里了，感兴趣的小伙伴可以去尝试一下XSS-GAMES

Ma Spaghet

在这里插入图片描述
要求弹出一个1337的窗口，Let’s go!

这里咋们随便传了个参数洒洒水，发现他就直接显示在标签里面了，那就必然存在问题了。看看源代码发现，这里使用了innerHTML，官方默认是禁用了这个的，所以咋们换一个
在这里插入图片描述

?somebody=<img src="1" onerror="alert(1337)">

这里可以看到已经成功的实现了1337的弹窗。

Jefff

题目还是要求弹窗1337
在这里插入图片描述
绕过思路，双引号闭合，然后注释后面的

?jeff=1";alert(1337);//

在这里插入图片描述
可以看到这一关就成功了。

Ugandan Knuckles

在这里插入图片描述
这里题目要求还是弹窗1337，但是通过看代码可以了解到这关增加了一个过滤。

这里可以看出过滤了尖括号。

?wey=aaa"%20οnfοcus=alert(1337)%20autofocus="

这里面咋们就是运用一个onfocus ：焦点（获取焦点事件）
input天生就有焦点事件，同时还要搭配另一个方法：autofocus （自动聚焦）
在这里插入图片描述

Ricardo Milos

在这里插入图片描述
分析代码不同可以看出，这里多了一个（submit）提交事件。那咱们就通过提交目的地action注入。

?ricardo=javascript:alert(1337)

在这里插入图片描述成功！

Ah That’s Hawt

在这里插入图片描述
这里通过分析代码，猜测可以利用 location ：用于获取或设置窗体的URL，并且可以用于解析URL。

?markassbrownlee=<img src=1 onerror=location="javascript:alert%25281337%2529">
注意：这里的%也需要进行编码转化。

在这里插入图片描述

Ligma

在这里插入图片描述
这里通过分析代码，发现数字，字母全都给过滤了。那这里就只能通过纯编码转换来解题了。

到这里这里还需要进行编码

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Mafia

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分析代码发现限制了字长，过滤了字符，过滤了alert。
这里咋们通过匿名函数来做

?mafia=Function(/ALERT(1337)/.source.toLowerCase())()

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Ok, Boomer

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通过分析代码发现这题新增了一个过滤框架 “DOMPurify” ，
咋们可以利用 js 弱类型语言的特点可以把函数放入字符串中，a标签的href会自动替换为字符串，而在代码中可以知道，它会自动获取到href的值，那么我们就可以将函数写入到href当中。

?boomer=<a id=ok href="tel:alert(1337)">

注意：Javascript 在“DOMPurify” 中是黑名单，所以使用 tel ，因为这个在白名单里面，是被框架允许的”
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WW3

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这题代码就是肉眼可见的多，就需要多分析分析了。

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?text=<img%20name%3dnotify><style><style%2F><script>alert(1337)%2F%2F&img=https://i.imgur.com/PdbDexI.jpg

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svg

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在进行文件执行前，会进行一个DOM树的构建，而如果只是一个svg的话，由于JS阻塞DOM树，一直到JS语句执行结束后，才可以引入img，此时img的属性已经被sanitizer清除了，自然也不可能执行事件代码了。
如果是嵌套 svg 的话，**最内层的svg先触发，然后再到下一层，而且是在DOM树构建完成以前就触发了相关事件；最外层的svg则得等到DOM树构建完成才能触发