CVE-2012-1647 in MediaFront
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the "stand alone PHP application for the OSM Player," as used in the MediaFront module 6.x-1.x before 6.x-1.5 and 7.x-1.x before 7.x-1.5 for Drupal, allow remote attackers to inject arbitrary web script or HTML via (1) $_SERVER[ HTTP_HOST ] or (2) $_SERVER[ SCRIPT_NAME ] to players/osmplayer/player/OSMPlayer.php, (3) playlist parameter to players/osmplayer/player/getplaylist.php, and possibly other vectors related to $_SESSION.
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Analysis
by VulDB Data Team • 02/20/2019
The vulnerability described in CVE-2012-1647 represents a critical cross-site scripting flaw affecting the OSM Player standalone PHP application within the Drupal MediaFront module. This vulnerability impacts versions 6.x-1.x before 6.x-1.5 and 7.x-1.x before 7.x-1.5, creating a significant security risk for Drupal installations that utilize this media player functionality. The flaw stems from inadequate input validation and output sanitization within the application's handling of server variables and user-supplied parameters, making it susceptible to malicious code injection attacks that can compromise user sessions and data integrity.
The technical exploitation of this vulnerability occurs through multiple attack vectors that leverage PHP server variables and user input parameters. Attackers can inject malicious scripts through the $_SERVER[ HTTP_HOST ] variable, which is commonly used to determine the host name of the current request, or through the $_SERVER[ SCRIPT_NAME ] variable that contains the path of the current script. Additionally, the playlist parameter in the getplaylist.php endpoint presents another injection point, while the vulnerability may extend to other vectors involving $_SESSION variables. These vectors collectively represent a classic case of insufficient input sanitization where user-controllable data flows directly into the application's output without proper validation or encoding, creating pathways for persistent XSS attacks that can execute malicious code in the context of users' browsers.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform session hijacking, steal sensitive user data, manipulate application functionality, and potentially gain unauthorized access to protected resources. When exploited, these XSS vulnerabilities can allow attackers to execute arbitrary JavaScript code within users' browsers, potentially leading to complete compromise of user sessions, data theft, and further lateral movement within affected systems. The vulnerability's presence in a widely-used Drupal module means that organizations implementing MediaFront functionality could be exposed to these risks without proper patching, creating a substantial attack surface that adversaries could exploit to gain unauthorized access to sensitive information and system resources.
Mitigation strategies for this vulnerability should focus on immediate patching of affected Drupal installations to versions 6.x-1.5 and 7.x-1.5 or later, which contain the necessary security fixes. Organizations should implement proper input validation and output encoding mechanisms to prevent user-controllable data from being executed as code, particularly when handling server variables like HTTP_HOST and SCRIPT_NAME. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws, and can be mapped to ATT&CK technique T1059.007 for script injection attacks. Additional defensive measures include implementing Content Security Policy headers, conducting regular security audits of PHP applications, and ensuring proper input sanitization across all user-controllable parameters. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while maintaining comprehensive monitoring to identify potential exploitation attempts. The remediation process should include thorough testing of patched versions to ensure that the security fixes do not introduce regressions in application functionality, and that all identified vectors have been properly addressed through proper input validation and output encoding mechanisms.