CVE-2012-1660 in Webform
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in components/select.inc in the Webform module 6.x-3.x before 6.x-3.17 and 7.x-3.x before 7.x-3.17 for Drupal, when the "Select (or other)" module is enabled, allow remote authenticated users with the create webform content permission to inject arbitrary web script or HTML via vectors related to (1) checkboxes or (2) radios.
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Analysis
by VulDB Data Team • 12/14/2021
The vulnerability CVE-2012-1660 represents a critical cross-site scripting weakness in the Webform module for Drupal, specifically affecting versions 6.x-3.x before 6.x-3.17 and 7.x-3.x before 7.x-3.17. This flaw resides within the components/select.inc file and exploits the interaction between the Webform module's select component functionality and user input handling. The vulnerability is particularly concerning because it affects authenticated users who possess the create webform content permission, meaning that attackers with relatively low privileges can leverage this weakness to execute malicious scripts across the affected Drupal site.
The technical implementation of this vulnerability stems from inadequate input sanitization within the Webform module's handling of checkbox and radio button components. When users create webforms with these select components, the module fails to properly escape or filter user-provided data before rendering it in the web interface. This allows attackers to inject malicious HTML or JavaScript code through the checkbox or radio input fields, which then gets executed in the browsers of other users who view the affected webform. The vulnerability operates under CWE-79 which categorizes cross-site scripting flaws as weaknesses that allow attackers to inject malicious code into web applications.
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, and data exfiltration. An attacker could craft malicious checkbox or radio values that, when rendered, execute scripts that steal cookies, redirect users to malicious sites, or even modify the webform content itself. This creates a persistent threat vector that can compromise multiple users who interact with the affected webforms, particularly in environments where the Webform module is extensively used for user data collection or form-based applications. The attack vector is particularly dangerous because it requires only the create webform content permission, which many organizations grant to trusted users or content editors.
Mitigation strategies for CVE-2012-1660 involve immediate patching of the Webform module to versions 6.x-3.17 or 7.x-3.17 respectively, which contain the necessary input sanitization fixes. Organizations should also implement proper input validation at multiple layers, including server-side sanitization of form inputs and client-side validation to prevent malicious code injection. Network monitoring should be enhanced to detect suspicious form submissions, and access controls should be reviewed to ensure that only trusted users have the create webform content permission. Additionally, implementing content security policies and regular security audits of web applications can help detect similar vulnerabilities. This vulnerability aligns with ATT&CK technique T1566 which covers social engineering through malicious web content, and T1059 which encompasses command and scripting interpreters used for executing malicious code in web applications.