CVE-2023-32584 in eBecas Plugin
Summary
by MITRE • 08/25/2023
Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in John Newcombe eBecas plugin <= 3.1.3 versions.
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Analysis
by VulDB Data Team • 09/20/2023
The CVE-2023-32584 vulnerability represents a critical stored cross-site scripting flaw within the eBecas plugin for WordPress, affecting versions up to and including 3.1.3. This vulnerability resides in the administrative authentication layer, requiring attackers to possess at least administrator-level privileges to exploit the weakness. The flaw manifests when authenticated users with elevated permissions submit malicious script content that gets stored within the application's database and subsequently executed whenever other users view the affected content. The vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically classified as a stored XSS variant where malicious code persists in the server's data storage rather than being reflected in HTTP responses. This particular vulnerability demonstrates the dangerous intersection of privilege escalation and client-side attack vectors, as it allows authenticated attackers to inject malicious scripts that execute in the context of other users' browsers.
The technical implementation of this vulnerability stems from inadequate input sanitization and output escaping mechanisms within the eBecas plugin's administrative interfaces. When administrators or users with administrative privileges enter content containing malicious JavaScript payloads into fields that are not properly validated or escaped before being stored, the system fails to neutralize the dangerous code elements. The stored nature of this vulnerability means that once the malicious script is injected into the database, it becomes persistent and will execute every time affected pages are loaded by other users. This characteristic aligns with ATT&CK technique T1566.001 for Initial Access through spearphishing attachments and T1588.002 for Spearphishing with Malicious Attachments, as the attack vector involves injecting malicious code that executes in user browsers. The vulnerability specifically impacts the plugin's handling of user-submitted content within administrative contexts where proper security controls are absent.
The operational impact of CVE-2023-32584 extends beyond simple script execution, as it provides attackers with the capability to perform session hijacking, credential theft, and data exfiltration from authenticated user sessions. An attacker with administrator privileges could inject scripts that steal cookies, redirect users to malicious sites, or manipulate the application's functionality to gain further access to sensitive data. The vulnerability essentially transforms the compromised administrative account into a persistent attack vector that can compromise all users who interact with the affected plugin's content. This creates a significant risk for organizations relying on WordPress installations with the eBecas plugin, as the attack can spread beyond the initial compromised account to affect multiple users within the system. The implications align with ATT&CK technique T1078.004 for Valid Accounts through cloud infrastructure and T1566.002 for Spearphishing with Malicious Links, where the compromised administrative account becomes a persistent foothold for broader attacks.
Mitigation strategies for CVE-2023-32584 should prioritize immediate plugin version updates to the latest secure release, as the vulnerability has been addressed in subsequent versions. Organizations must implement comprehensive input validation and output escaping mechanisms throughout their administrative interfaces, ensuring that all user-submitted content undergoes proper sanitization before storage. The implementation of Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting script execution within the browser context. Regular security audits of WordPress plugins and themes should be conducted to identify similar vulnerabilities, while privileged access controls must be strictly enforced through multi-factor authentication and principle of least privilege concepts. Network monitoring should be enhanced to detect anomalous script loading patterns that might indicate XSS exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date software components and implementing robust security controls in web applications, particularly those handling sensitive administrative data. Organizations should also consider implementing web application firewalls to detect and block malicious script injection attempts, while regular security training for administrators can help prevent social engineering attacks that might lead to privilege escalation.