CVE-2015-3357 in Wishlist Module
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Wishlist module before 6.x-2.7 and 7.x-2.x before 7.x-2.7 for Drupal allows remote authenticated users with the "access wishlists" permission to inject arbitrary web script or HTML via unspecified vectors, which are not properly handled in a log message.
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Analysis
by VulDB Data Team • 03/19/2019
The CVE-2015-3357 vulnerability represents a cross-site scripting flaw within the Wishlist module for Drupal platforms, affecting versions prior to 6.x-2.7 and 7.x-2.x before 7.x-2.7. This vulnerability specifically targets authenticated users who possess the "access wishlists" permission, creating a significant security risk for Drupal-based web applications that utilize this module. The flaw manifests in the improper handling of log messages, where user-provided input fails to undergo adequate sanitization before being processed and displayed within the application's logging functionality.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the Wishlist module's logging mechanisms. When authenticated users interact with the wishlist functionality and their actions are recorded in log messages, the system fails to properly sanitize potentially malicious input that could contain script tags or other executable code. This oversight creates an environment where attackers can inject malicious payloads that execute in the context of other users' browsers when they view the log entries. The vulnerability operates as a reflected XSS attack vector, leveraging the module's logging infrastructure as an injection point for malicious code execution.
The operational impact of CVE-2015-3357 extends beyond simple script injection, as it enables attackers to potentially escalate privileges and compromise user sessions within the Drupal application. Since the vulnerability requires only the "access wishlists" permission, attackers can exploit it even without administrative privileges, making it particularly dangerous for applications with numerous authenticated users. The attack vector becomes more insidious when considering that log messages may be viewed by multiple users or administrators, potentially allowing attackers to execute code across a broader user base. This vulnerability directly aligns with CWE-79, which catalogs cross-site scripting flaws, and represents a classic example of how logging systems can become attack surfaces when proper input sanitization is omitted.
Organizations affected by this vulnerability should implement immediate mitigations including updating to the patched versions of the Wishlist module, specifically versions 6.x-2.7 and 7.x-2.7 or later. Additionally, administrators should consider implementing web application firewalls that can detect and block suspicious script injection patterns in log messages, while also reviewing and hardening the logging configurations to prevent malicious input from being stored in the first place. The ATT&CK framework categorizes this vulnerability under T1059.007 for scripting and T1566.001 for spearphishing via web applications, highlighting the importance of addressing such vulnerabilities in the context of broader attack surface management strategies. Regular security audits of third-party modules and proper input validation practices should be implemented to prevent similar vulnerabilities from emerging in other components of the Drupal ecosystem.