CVE-2023-2706 – This vulnerability allows unauthenticated attac... (How to Fix)

Q: What is the severity of CVE-2023-2706?

CVE-2023-2706 has a CVSS score of 8.1 (HIGH). This vulnerability allows unauthenticated attackers to bypass authentication in the OTP Login Woocommerce & Gravity Forms WordPress plugin by obtaining OTP codes via AJAX responses. Attackers can gain administrator access if they know the target's phone number, which can be obtained through social engineering or reconnaissance. All WordPress sites using the vulnerable plugin are affected.

📋 TL;DR

This vulnerability allows unauthenticated attackers to bypass authentication in the OTP Login Woocommerce & Gravity Forms WordPress plugin by obtaining OTP codes via AJAX responses. Attackers can gain administrator access if they know the target's phone number, which can be obtained through social engineering or reconnaissance. All WordPress sites using the vulnerable plugin are affected.

💻 Affected Systems

Products:

OTP Login Woocommerce & Gravity Forms WordPress plugin

Versions: Versions before 2.2.1

Operating Systems: All operating systems running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires the plugin to be installed and active with OTP login enabled. Attackers need the target's phone number, which may be publicly available or obtainable via social engineering.

📦 What is this software?

Otp Login Woocommerce \& Gravity Forms by Xootix

View all CVEs affecting Otp Login Woocommerce \& Gravity Forms →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete site compromise with attacker gaining administrator privileges, leading to data theft, defacement, malware injection, or complete control of the WordPress installation.

🟠

Likely Case

Unauthorized access to administrator accounts, potentially leading to privilege escalation, data exfiltration, or installation of backdoors.

🟢

If Mitigated

Limited impact if strong phone number security, multi-factor authentication, and network segmentation are in place.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires only web access and knowledge of the target's phone number. The vulnerability is well-documented with public proof-of-concept details available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.2.1

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2912731%40mobile-login-woocommerce&new=2912731%40mobile-login-woocommerce&sfp_email=&sfph_mail=

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'OTP Login Woocommerce & Gravity Forms'. 4. Click 'Update Now' if available, or manually update to version 2.2.1. 5. Verify the plugin version shows 2.2.1 or higher.

🔧 Temporary Workarounds

Disable OTP Login Feature

all

Temporarily disable the OTP login functionality in the plugin settings until patched.

Restrict AJAX Endpoints

linux

Use web application firewall or .htaccess rules to restrict access to the vulnerable AJAX endpoints.

# Example .htaccess rule to block specific AJAX requests
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$
RewriteCond %{QUERY_STRING} action=xoo_ml_send_otp
RewriteRule ^ - [F]

🧯 If You Can't Patch

Disable the plugin completely and use alternative authentication methods.
Implement network-level restrictions to limit access to WordPress admin areas from untrusted networks.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for 'OTP Login Woocommerce & Gravity Forms'. If version is below 2.2.1, the system is vulnerable.

Check Version:

wp plugin list --name='OTP Login Woocommerce & Gravity Forms' --field=version

Verify Fix Applied:

Confirm the plugin version is 2.2.1 or higher in WordPress admin panel. Test OTP login functionality to ensure it works without exposing codes in AJAX responses.

📡 Detection & Monitoring

Log Indicators:

Multiple failed OTP attempts from same IP
Unusual AJAX requests to admin-ajax.php with action=xoo_ml_send_otp
Successful logins from unexpected locations or IPs

Network Indicators:

HTTP POST requests to /wp-admin/admin-ajax.php with action parameter containing 'xoo_ml_send_otp'
Unusual traffic patterns to OTP-related endpoints

SIEM Query:

source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND query="*action=xoo_ml_send_otp*"

📊 Metadata

CVE ID: CVE-2023-2706

CVSS v3 Score: 8.1 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-287

Published: May 17, 2023

Last Updated: November 21, 2024

🔗 References

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