CVE-2023-23722 in Winwar Media WP eBay Product Feeds Plugin
Summary
by MITRE • 03/23/2023
Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Winwar Media WP eBay Product Feeds plugin <= 3.3.1 versions.
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Analysis
by VulDB Data Team • 04/13/2023
The vulnerability identified as CVE-2023-23722 represents a critical stored cross-site scripting flaw within the WP eBay Product Feeds plugin for WordPress systems. This security weakness affects versions up to and including 3.3.1, where authenticated administrative users can exploit the vulnerability to inject malicious scripts into the plugin's administrative interface. The flaw specifically resides in how the plugin processes and stores user input within its admin settings, creating a persistent vector for attack that can compromise the entire WordPress installation when exploited by privileged users.
The technical implementation of this vulnerability stems from inadequate input validation and output escaping mechanisms within the plugin's administrative components. When administrators interact with the plugin's configuration interface, the system fails to properly sanitize or encode user-supplied data before storing it in the database. This allows attackers with administrative privileges to inject malicious JavaScript code through form fields or configuration parameters that are subsequently executed whenever the affected admin pages are loaded. The stored nature of this vulnerability means that the malicious payload persists in the database and executes against any user who accesses the compromised administrative interface, making it particularly dangerous in multi-user environments where administrative access is shared.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with elevated privileges within the WordPress environment. Once successfully exploited, the malicious scripts can manipulate administrative functions, access sensitive data, modify plugin configurations, and potentially escalate to full system compromise. The vulnerability is particularly concerning because it requires only administrative-level access to exploit, meaning that attackers who have gained access to any administrative account can leverage this flaw to maintain persistent access and conduct further attacks. This aligns with ATT&CK technique T1078.004 for valid accounts and T1566.001 for credential harvesting, as the vulnerability enables attackers to exploit existing administrative access for more extensive compromise.
Organizations should immediately implement several mitigation strategies to address this vulnerability. The primary recommendation involves upgrading to the latest version of the WP eBay Product Feeds plugin where the XSS vulnerability has been patched. Additionally, administrators should enforce strict input validation policies and ensure that all user-supplied data is properly escaped before storage and rendering. Network segmentation and privileged access controls should be implemented to limit the potential impact of administrative account compromise. The vulnerability also highlights the importance of regular security audits and vulnerability assessments of third-party WordPress plugins, as highlighted by CWE-79 which specifically addresses cross-site scripting flaws in web applications. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, while maintaining comprehensive backup and recovery procedures to quickly restore systems in case of successful attacks.