CVE-2012-4272 in 2-click-social-media-buttons
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the 2 Click Social Media Buttons plugin before 0.34 for WordPress allow remote attackers to inject arbitrary web script or HTML via unspecified vectors related to the "processing of the buttons of Xing and Pinterest".
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Analysis
by VulDB Data Team • 06/11/2017
The CVE-2012-4272 vulnerability represents a critical cross-site scripting flaw discovered in the 2 Click Social Media Buttons plugin for WordPress, affecting versions prior to 0.34. This vulnerability specifically targets the processing mechanisms of social media buttons for Xing and Pinterest, creating a significant security risk for WordPress websites that utilize this plugin. The issue stems from insufficient input validation and output sanitization within the plugin's codebase, allowing malicious actors to inject arbitrary web scripts or HTML content through these specific social media integration points.
The technical nature of this vulnerability aligns with CWE-79, which categorizes cross-site scripting flaws as weaknesses in web applications where untrusted data is improperly incorporated into web pages without proper validation or escaping. The flaw operates by failing to adequately sanitize user-supplied data or configuration parameters that are used to generate the Xing and Pinterest button HTML elements. Attackers can exploit this by crafting malicious inputs that, when processed by the vulnerable plugin, get executed in the browsers of unsuspecting website visitors. This creates a persistent threat vector where malicious scripts can be injected into the web pages and executed in the context of the victim's browser session.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, defacement of web pages, and redirection to malicious sites. The vulnerability affects WordPress websites that rely on social media integration for marketing or engagement purposes, making it particularly dangerous for businesses and organizations that depend on these features. The attack surface is amplified because the plugin's buttons are typically embedded in high-traffic areas of websites, increasing the potential exposure and impact of successful attacks. This vulnerability also demonstrates the broader risk associated with third-party WordPress plugins, as they often have elevated privileges and access to user data that can be exploited when security flaws exist.
Mitigation strategies for CVE-2012-4272 require immediate action to upgrade the 2 Click Social Media Buttons plugin to version 0.34 or later, which contains the necessary patches to address the XSS vulnerabilities. System administrators should also implement comprehensive input validation and output encoding mechanisms throughout their WordPress installations, particularly for user-generated content and plugin configurations. The vulnerability highlights the importance of regular security audits and updates, as well as adherence to the principle of least privilege in plugin usage. Organizations should also consider implementing content security policies and web application firewalls to provide additional layers of protection against similar vulnerabilities. This case underscores the critical need for maintaining current security practices and the potential consequences of outdated plugin versions in WordPress environments, where the attack surface can be significantly expanded through insecure third-party integrations. The vulnerability serves as a reminder that social media integration features, while valuable for user engagement, can introduce significant security risks when not properly secured against cross-site scripting attacks.