CVE-2024-5871: WooCommerce Social Login RCE Vulnerability

CVE-2024-5871 Overview

The WooCommerce - Social Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.6.2 via deserialization of untrusted input from the woo_slg_verify parameter. This allows unauthenticated attackers to potentially inject a PHP Object. Although no known POP chain is present in the vulnerable software, if a POP chain is available via an additional plugin or theme installed on the target system, it could enable an attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Critical Impact
This vulnerability could allow for arbitrary file deletion or unauthorized code execution if a POP chain is accessible through another plugin.

Affected Products

wpwebelite woocommerce_social_login

Discovery Timeline

2024-06-15 - CVE CVE-2024-5871 published to NVD
2025-02-07 - Last updated in NVD database

Technical Details for CVE-2024-5871

Vulnerability Analysis

This vulnerability arises from the unsafe deserialization of untrusted input in the woo_slg_verify parameter. The lack of input validation enables an attacker to inject crafted serialization data that is processed without verification of its origin or intent.

Root Cause

Improper input validation in the deserialization process where the input from woo_slg_verify is not adequately verified before being deserialized.

Attack Vector

The attack is conducted over the network, allowing remote unauthenticated attackers to exploit the vulnerability by submitting crafted HTTP requests containing malicious serialization payloads.

php

// Example exploitation code (sanitized)
$payload = "O:8:example:0:{}";
$response = file_get_contents("http://target-website.com/?woo_slg_verify=" . urlencode($payload));

Detection Methods for CVE-2024-5871

Indicators of Compromise

Unusual file deletions
Unexpected behavioral changes in plugins
Unauthorized code execution logs

Detection Strategies

Security teams should monitor web application logs for unusual parameter inputs and check for serialized object patterns that are not typical in standard operations.

Monitoring Recommendations

Implement logging for PHP deserialization functions and alert on unexpected patterns or anomalies in their usage, particularly involving the woo_slg_verify parameter.

How to Mitigate CVE-2024-5871

Immediate Actions Required

Disable the WooCommerce - Social Login plugin until a patch is available.
Review the WordPress site for any additional plugins that could introduce a POP chain.
Restrict network access to prevent external exploitation.

Patch Information

Monitor wpwebelite's official product page and advisories for security patches addressing this deserialization vulnerability.

Workarounds

Consider implementing a web application firewall (WAF) to block potential malicious serialization payloads targeting the woo_slg_verify parameter.

bash

# Configuration example for blocking serialized payloads
location / {
   if ($request_uri ~* "woo_slg_verify") {
      deny all;
   }
}