CVE-2012-4541 in Piwik
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Piwik before 1.9 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/24/2019
The CVE-2012-4541 vulnerability represents a critical cross-site scripting flaw discovered in the Piwik web analytics platform prior to version 1.9. This vulnerability classifies under CWE-79 which specifically addresses cross-site scripting attacks where malicious scripts can be injected into web applications. The flaw exists in the platform's handling of user input data, creating an avenue for remote attackers to execute arbitrary web scripts or HTML code within the context of other users' browsers. Piwik, being a widely-used open-source analytics platform, processes vast amounts of user data including visitor information, page views, and tracking parameters that are processed and displayed within the application interface. The vulnerability's impact is particularly concerning given that Piwik is often deployed in environments where sensitive business and user data is collected and analyzed.
The technical nature of this vulnerability stems from inadequate input validation and output encoding mechanisms within the Piwik application's codebase. Attackers can exploit this weakness through unspecified vectors that likely involve manipulation of parameters passed to the analytics platform, potentially including tracking URLs, user agent strings, or other data fields that are not properly sanitized before being rendered in the web interface. The vulnerability allows for persistent or reflected XSS attacks, meaning that malicious code could be stored within the application's database or executed immediately through crafted requests. This flaw essentially undermines the integrity of the web application's security model by enabling unauthorized execution of malicious code in the browsers of legitimate users who interact with the compromised Piwik installation.
The operational impact of this vulnerability extends beyond simple script injection, as it can lead to complete session hijacking, credential theft, and unauthorized access to sensitive analytics data. An attacker who successfully exploits this vulnerability could gain access to detailed visitor information, including IP addresses, browser details, and behavioral patterns that Piwik collects. This represents a significant risk to organizations relying on Piwik for business intelligence and user analytics, as the compromise could expose confidential operational data and potentially lead to further attacks within the network. The vulnerability also poses risks to user privacy, as attackers could intercept and manipulate tracking data that may contain sensitive personal information. Organizations using Piwik without proper security patches would be particularly vulnerable to these attacks, especially in environments where the analytics platform is accessible to multiple users or exposed to external traffic.
The remediation strategy for this vulnerability involves immediate upgrading to Piwik version 1.9 or later, which contains the necessary security patches to address the XSS flaw. Organizations should also implement additional security measures including input validation, output encoding, and regular security audits of their web applications. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for 'Command and Scripting Interpreter: JavaScript' as attackers can leverage the XSS vulnerability to execute JavaScript code in victim browsers. Security teams should also consider implementing Content Security Policy (CSP) headers to mitigate the impact of potential XSS attacks, and establish regular patch management procedures to prevent similar vulnerabilities from being exploited in the future. Organizations should conduct thorough security assessments of their Piwik installations to identify any other potential vulnerabilities that may have been exploited during the period when the system was vulnerable to this XSS attack.