CVE-2024-12857 Overview
CVE-2024-12857 is a critical authentication bypass vulnerability affecting the AdForest theme for WordPress. The vulnerability exists in all versions up to and including 5.1.8. Due to improper verification of user identity during the OTP (One-Time Password) phone login process, unauthenticated attackers can bypass authentication mechanisms and gain unauthorized access to any user account that has configured OTP login by phone number.
Critical Impact
Unauthenticated attackers can authenticate as any user, including administrators, by exploiting the flawed OTP login verification. This can lead to complete site compromise, data theft, and unauthorized administrative access.
Affected Products
- AdForest WordPress Theme versions up to and including 5.1.8
- WordPress installations using the AdForest classified ads theme with OTP phone login enabled
- Scriptsbundle AdForest theme deployments
Discovery Timeline
- 2025-01-22 - CVE CVE-2024-12857 published to NVD
- 2025-01-24 - Last updated in NVD database
Technical Details for CVE-2024-12857
Vulnerability Analysis
This authentication bypass vulnerability stems from improper identity verification in the AdForest theme's OTP login functionality. When users configure phone-based OTP authentication, the theme fails to properly validate that the person attempting to log in is the legitimate owner of the phone number or that the OTP code corresponds to the correct authentication session.
The vulnerability falls under CWE-288 (Authentication Bypass Using an Alternate Path or Channel) and CWE-306 (Missing Authentication for Critical Function). These weaknesses indicate that the authentication mechanism can be circumvented entirely, allowing attackers to authenticate as any user without proper credential verification.
The network-accessible attack vector with no required privileges or user interaction makes this vulnerability particularly dangerous for publicly accessible WordPress sites running the affected theme.
Root Cause
The root cause lies in the AdForest theme's OTP authentication implementation, which does not properly bind the OTP verification process to a specific user session or validate the relationship between the requesting party and the account being accessed. This missing authentication check allows attackers to manipulate the login flow to authenticate as arbitrary users who have enabled phone-based OTP login.
Attack Vector
An attacker can exploit this vulnerability remotely over the network without any authentication or user interaction. The attack involves manipulating the OTP login process to bypass identity verification. Since users with phone-based OTP login enabled are vulnerable, attackers can target any account—including administrator accounts—to gain full control over the WordPress installation.
The exploitation process involves intercepting or manipulating the authentication flow during the OTP phone login process. By exploiting the lack of proper user identity verification, an attacker can complete the authentication sequence for any target account without possessing the legitimate credentials or OTP code.
Detection Methods for CVE-2024-12857
Indicators of Compromise
- Unexpected login events for user accounts, particularly administrative accounts, from unfamiliar IP addresses
- Multiple failed or successful OTP authentication attempts targeting various user accounts
- Authentication logs showing logins without corresponding OTP verification completion
- Unusual user session creation patterns in WordPress audit logs
Detection Strategies
- Monitor WordPress authentication logs for anomalous login patterns, especially for accounts using OTP phone authentication
- Implement web application firewall (WAF) rules to detect and block suspicious authentication requests to OTP-related endpoints
- Review access logs for repeated requests to OTP verification endpoints from single IP addresses targeting multiple accounts
- Deploy SentinelOne Singularity to detect post-exploitation activities following unauthorized access
Monitoring Recommendations
- Enable detailed WordPress authentication logging to capture all login attempts and OTP verification events
- Configure alerts for successful logins from new geographic locations or IP addresses
- Monitor for privilege escalation activities or unauthorized administrative actions following authentication events
- Implement real-time monitoring of critical WordPress files and configurations for unauthorized modifications
How to Mitigate CVE-2024-12857
Immediate Actions Required
- Update the AdForest theme to the latest patched version immediately
- Temporarily disable OTP phone login functionality until the patch is applied
- Review authentication logs for signs of exploitation and unauthorized access
- Reset passwords and revoke sessions for all administrative accounts as a precaution
- Conduct a security audit of user accounts to identify any unauthorized access or modifications
Patch Information
The vulnerability affects AdForest theme versions up to and including 5.1.8. Website administrators should update to the latest version of the AdForest theme available from ThemeForest. Additional vulnerability intelligence is available from Wordfence.
Workarounds
- Disable OTP phone-based login functionality until a patch is applied by removing or disabling the phone OTP option in theme settings
- Implement additional authentication controls such as CAPTCHA or rate limiting on login endpoints
- Restrict access to the WordPress admin panel using IP whitelisting or VPN requirements
- Deploy a web application firewall (WAF) to monitor and filter suspicious authentication requests
- Consider temporarily switching to standard WordPress authentication methods until the vulnerability is addressed
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
