对post进行xss注入(xss注入解决方案)

今日笑话 2022年05月30日
本文导读目录:

php网站有get注入和post注入吗

php网站,get和post注入还是很多的

比如 sql注入,xss跨站脚本攻击等

xss注入漏洞产生的原因?xss注入过程步骤是什么?防范xss注入的方法有哪些

对于的用户输入中出现XSS漏洞的问题,主要是由于开发人员对XSS了解不足,安全的意识不够造成的。现在让我们来普及一下XSS的一些常识,以后在开发的时候,每当有用户输入的内容时,都要加倍小心。请记住两条原则:过滤输入和转义输出。

一、什么是XSS

XSS又叫CSS (Cross Site Script) ,跨站脚本攻击。它指的是恶意攻击者往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,从而达到恶意的特殊目的。XSS属于被动式的攻击,因为其被动且不好利用,所以许多人常呼略其危害性。

在WEB2.0时代,强调的是互动,使得用户输入信息的机会大增,在这个情况下,我们作为开发者,在开发的时候,要提高警惕。

二、XSS攻击的主要途径

XSS攻击方法只是利用HTML的属性,作各种的尝试,找出注入的方法。现在对三种主要方式进行分析。

第一种:对普通的用户输入,页面原样内容输出。

打开http://go.ent.163.com/goproducttest/test.jsp(限公司IP),输 入:scriptalert(‘xss’)/script, JS脚本顺利执行。当攻击者找到这种方法后,就可以传播这种链接格式的链接 (http://go.ent.163.com/goproducttest/test.jsp?key=JSCODE)如:http: //go.ent.163.com/goproducttest/test.jsp?key=scriptalert(‘xss’) lt;/script,并对JSCODE做适当伪装,如:

http://go.ent.163.com/goproducttest/test.jsp?key=%3c%73%63%72%69%70 %74%3e%61%6c%65%72%74%28%27%78%73%73%27%29%3c%2f%73%63%72%69%70%74%3e,当其 它用户当点此链接的时候,JS就运行了,造成的后果会很严重,如跳去一个有木马的页面、取得登陆用户的COOKIE等。

第二种:在代码区里有用户输入的内容

原则就是,代码区中,绝对不应含有用户输入的东西。

第三种:允许用户输入HTML标签的页面。

用户可以提交一些自定义的HTML代码,这种情况是最危险的。因为,IE浏览器默认采用的是UNICODE编码,HTML编码可以用ASCII方式来写,又可以使用”/”连接16进制字符串来写,使得过滤变得异常复杂,如下面的四个例子,都可以在IE中运行。

1,直接使用JS脚本。

img src=”javascript:alert(‘xss’)” /

2,对JS脚本进行转码。

img src=”javascript:alert(‘xss’)” /

3,利用标签的触发条件插入代码并进行转码。

img onerror=”alert(‘xss’)” /

4,使用16进制来写(可以在傲游中运行)

img STYLE=”background-image: /75/72/6c/28/6a/61/76/61/73/63/72/69/70/74/3a/61/6c/65/72/74/28/27/58/53/53/27/29/29″

以上写法等于img STYLE=”background-image: url(javascript:alert(‘XSS’))”

三、XSS攻击解决办法

请记住两条原则:过滤输入和转义输出。

具体执行的方式有以下几点:

第一、在输入方面对所有用户提交内容进行可靠的输入验证,提交内容包括URL、查询关键字、http头、post数据等

第二、在输出方面,在用户输内容中使用XMP标签。标签内的内容不会解释,直接显示。

第三、严格执行字符输入字数控制。

四、在脚本执行区中,应绝无用户输入。

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。

XSS攻击的定义,类型以及防御方法?

XXS攻击全称跨站脚本攻击,是一种在Web应用中的计算机安全漏洞,它允许恶意Web用户将代码植入到提供给其他使用的页面中。

XSS攻击有哪几种类型?下面就由锐速云的小编为大家介绍一下

经常见到XSS攻击有三种:反射XSS攻击、DOM-based型XSS攻击以及储存型XSS攻击。

[if !supportLists]1、[endif]反射型XSS攻击

反射性XSS一般是攻击者通过特定手法(如电子邮件),诱使用户去访问一个包含恶意代码的URL,当受害者点击这些专门设计链接的时候,恶意代码会直接在受害主机上的浏览器上执行,反射型XSS通常出现在网站搜索栏,用户登入口等地方,常用来窃取客户端或进行钓鱼欺骗。

[if !supportLists]2、[endif]存储型XSS攻击

存储型XSS攻击也叫持久型XSS,主要将XSS代码提交储存在服务器端(数据库,内存,文件系统等)下次请求目标页面时不用在提交XSS代码。当目标用户访问该页面获取数据时,XSS代码会从服务器解析之后加载出来,返回到浏览器做正常的HTML和JS解析执行,XSS攻击就发生了。储存型XSS一般出现在网站留言,评论,博客日志等交互处,恶意脚本储存到客户端或者服务端的数据库中。

[if !supportLists]3、[endif]DOM-based型XSS攻击

DOM-based型XSS攻击它是基于DOM的XSS攻击是指通过恶意脚本修改页面的DOM结构,是纯粹发生在客户端的攻击。DOM型XSS攻击中,取出和执行恶意代码由浏览器端完成,属于前端JavaScript自身的安全漏洞。

如何防御XSS攻击?

[if !supportLists]1、[endif]对输入内容的特定字符进行编码,列如表示html标记等符号。

[if !supportLists]2、[endif]对重要的cookie设置httpOnly,防止客户端通过document。cookie读取cookie,此HTTP开头由服务端设置。

[if !supportLists]3、[endif]将不可信的输出URT参数之前,进行URLEncode操作,而对于从URL参数中获取值一定要进行格式检查

[if !supportLists]4、[endif]不要使用Eval来解析并运行不确定的数据或代码,对于JSON解析请使用JSON。Parse()方法

[if !supportLists]5、[endif]后端接口也应该要做到关键字符过滤的问题。

我的网站扫描后有xss 和post漏洞这个是甚么意思!

很多防护软件都可以修复漏洞的.

比如说:腾讯电脑管家.他不光能修复电脑系统的漏洞,还有其他强大的功能.

电脑管家具有定期体检、及时修复漏洞、实时防护功能,同时拥有管理软件、查杀木马、系统优化、帐号保护、硬件检测、软件搬家等功能!

步骤:打开腾讯电脑管家修补漏洞扫描漏洞一键修复即可。

希望能够帮到你~

如何进行get,post方式注入攻击

1.POST注入,通用防注入一般限制get,但是有时候不限制post或者限制的很少,这时候你就可以试下post注入,比如登录框、搜索框、投票框这 类的。另外,在asp中post已被发扬光大,程序员喜欢用receive来接受数据

如何判断,一个网站是否可以用post注入?

许多网站程序在编写时,没有对用户输入数据的合法性进行判断,使应用程序存在安全隐患。用户可以提交一段数据库查询代码,根据程序返回的结果,获得某些想得知的数据,这就是所谓的SQL Injection,即SQL注入。如何判断网站是否存在POST注入呢!请看以下步骤操作做。

POST注入操作介绍:

1.POST注入一般发生在表单数据传输时、抓取POST提交的数据进行SQL语句测试

POST注入操作流程:

比如抓取的POST数据为:userName=adminpassword=admin

测试诸如语句填写:userName=adminpassword='admin 1=1--

像这样userName 参数后面加一些SQL语句(注入测试语句)进行POST数据注入测试即可。

如何有效防止XSS攻击/AJAX跨域攻击

1,利用字符过滤漏洞,提交恶意js代码,当用户打开页面时执行

2,需要填写图片地址或css等直接在页面加载时执行的地方,填写恶意js [javascript:xxxx],当用户打开包含图片的页面时,可以执行js。比如GET s1.game.com/fight/:id 表示发兵到某个用户,虽然做了用户验证,但没做来源验证,用户只需将这个地址发到同用户的论坛作为图片地址即可执行

3,通过跳转页面漏洞,比如 refer.php?message=xxxx ,页面上直接用 $_GET['message'] 的话,就会造成xss漏洞,把message的参数换成js代码或恶意网址,即可盗取用户cookie,或执行恶意js,或跳转到钓鱼页面等

4,利用浏览器或服务器0day漏洞

1,XSS主要是你的页面可以运行用户写的js,所以对所有的用户提交的数据进行过滤,对于判断用户是否登录状态的cookie信息进行加密,并且加上Ip信息,这样基本被盗取也无法获取登录权限

2,对update或delete的操作采用post方式提交,每次form里加一个唯一验证字符串,用hiden方式提交,用于服务器验证是否来自用户客户端

3,跳转程序需要对传递的url进行匹配判断,只允许特定的格式

4,时常关注安全方面的消息,一有漏洞即刻不上

我来说两句
黑客技术 2年前 (2022-05-30) | 回复
射性XSS一般是攻击者通过特定手法(如电子邮件),诱使用户去访问一个包含恶意代码的URL,当受害者点击这些专门设计链接的时候,恶意代码会直接在受害主机上的浏览器上执行,反射型XSS通常出现在网站搜索栏,用
黑客技术 2年前 (2022-05-30) | 回复
于img STYLE=”background-image: url(javascript:alert(‘XSS’))”三、XSS攻击解决办法请记住两条原则:过滤输入和转义输出。具体执行的方式有以下几点:第一、在输入方面对所有用户提交内容进行可靠的输入验
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