CVE-2018-16613 in wpForo Forum Plugin
Summary
by MITRE
An issue was discovered in the update function in the wpForo Forum plugin before 1.5.2 for WordPress. A registered forum is able to escalate privilege to the forum administrator without any form of user interaction.
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Analysis
by VulDB Data Team • 10/06/2023
The vulnerability identified as CVE-2018-16613 resides within the wpForo Forum plugin for WordPress, specifically affecting versions prior to 1.5.2. This represents a critical privilege escalation flaw that allows registered forum users to elevate their permissions to administrator level without requiring any user interaction or additional authentication mechanisms. The issue stems from a flaw in the plugin's update function implementation, which fails to properly validate user permissions before executing administrative operations.
The technical nature of this vulnerability aligns with CWE-269, which addresses improper privilege management in software systems. The flaw occurs because the update function does not adequately verify whether the requesting user possesses sufficient privileges to perform administrative actions. Registered forum members can exploit this weakness by manipulating specific parameters or function calls that should only be accessible to administrators. This type of vulnerability falls under the ATT&CK technique T1068, which encompasses privilege escalation through the exploitation of software vulnerabilities.
The operational impact of this vulnerability is severe as it fundamentally compromises the security model of WordPress installations using the affected wpForo plugin. Once exploited, a malicious registered user gains complete administrative control over the forum, including the ability to modify forum settings, manage user accounts, delete content, and potentially access sensitive data. The vulnerability is particularly dangerous because it requires no user interaction, meaning that an attacker could exploit it silently without the target's knowledge or consent. This automated privilege escalation capability transforms a simple forum membership into a full administrative compromise, potentially allowing attackers to use the compromised forum as a foothold for broader network attacks.
Mitigation strategies for this vulnerability include immediate upgrading to wpForo plugin version 1.5.2 or later, which contains the necessary security patches to address the privilege escalation flaw. Administrators should also implement additional monitoring mechanisms to detect unusual administrative activities within their forum environments. Regular security audits of installed WordPress plugins and themes remain essential, as this vulnerability demonstrates how seemingly minor flaws in plugin code can result in catastrophic security consequences. The incident highlights the importance of proper input validation and privilege checking in web applications, particularly those handling user-generated content and administrative functions.