CVE-2024-32835 in Import Export WordPress Users Plugin
Summary
by MITRE • 04/24/2024
Deserialization of Untrusted Data vulnerability in WebToffee Import Export WordPress Users.This issue affects Import Export WordPress Users: from n/a through 2.5.3.
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Analysis
by VulDB Data Team • 04/24/2024
The CVE-2024-32835 vulnerability represents a critical deserialization of untrusted data flaw within the WebToffee Import Export WordPress Users plugin, specifically impacting versions ranging from n/a through 2.5.3. This vulnerability falls under the CWE-502 category, which specifically addresses deserialization of untrusted data, making it a well-documented and dangerous security weakness in software applications. The flaw exists in the plugin's handling of user data import and export operations, where the application fails to properly validate or sanitize serialized data received from external sources. When a malicious actor crafts specially formatted serialized data and feeds it into the import functionality, the system's deserialization process can execute arbitrary code or manipulate the application's internal state. This vulnerability directly impacts WordPress environments where the affected plugin is installed, creating potential entry points for attackers to escalate privileges, execute remote code, or compromise the entire WordPress installation. The issue stems from the plugin's lack of proper input validation mechanisms that should normally prevent untrusted serialized data from being processed, particularly in contexts where user-supplied data is expected to be treated as potentially malicious.
The operational impact of CVE-2024-32835 extends beyond simple data corruption or application instability, as it enables sophisticated attack vectors that align with multiple tactics outlined in the MITRE ATT&CK framework. Attackers can leverage this vulnerability to perform privilege escalation, persistent threat operations, and lateral movement within compromised WordPress environments. The vulnerability's exploitation typically involves crafting malicious serialized objects that, when processed by the vulnerable plugin, trigger unintended code execution. This capability allows threat actors to install backdoors, modify user permissions, or even gain administrative control over the WordPress site. The attack surface is particularly concerning because WordPress plugins often have elevated privileges and access to sensitive user data, making the compromise of a single plugin potentially devastating to the entire site's security posture. Security researchers have identified that this vulnerability can be exploited through various attack vectors including file upload operations, import functionality, and potentially through API endpoints that handle user data manipulation. The lack of proper sanitization and validation creates a dangerous environment where attackers can manipulate the application's object graph, potentially leading to complete system compromise.
Mitigation strategies for CVE-2024-32835 must address both immediate remediation and long-term security hardening measures. The most critical immediate action is to upgrade the WebToffee Import Export WordPress Users plugin to version 2.5.4 or later, which contains the necessary patches to prevent deserialization of untrusted data. Organizations should also implement network segmentation and access controls to limit exposure of the vulnerable plugin to untrusted users or external networks. Security configurations should include disabling unnecessary plugin functionalities, implementing strict input validation for all user-supplied data, and monitoring for suspicious import or export operations. The vulnerability's nature suggests that defensive measures should include implementing web application firewalls with rules specifically designed to detect and block malicious serialized data patterns. Additionally, regular security audits should be conducted to ensure no other plugins or components within the WordPress environment exhibit similar deserialization vulnerabilities. According to industry best practices and security frameworks, this vulnerability highlights the importance of input validation and secure coding practices, particularly when dealing with serialized data processing. Organizations should also consider implementing automated security scanning tools that can detect similar patterns in their codebase and establish incident response procedures specifically tailored to handle deserialization attacks. The remediation process should include thorough testing of the patched version to ensure no regression issues are introduced while maintaining the plugin's core functionality for legitimate users.