CVE-2012-2719 in filedepot
Summary
by MITRE
The filedepot module 6.x-1.x before 6.x-1.3 for Drupal, when accessed using multiple different browsers from the same IP address, causes Internet Explorer sessions to "switch users" when uploading a file, which has unspecified impact possibly involving file uploads to the wrong user directory, aka "Session Management Vulnerability."
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Analysis
by VulDB Data Team • 02/17/2019
The CVE-2012-2719 vulnerability represents a critical session management flaw within the filedepot module for Drupal 6.x-1.x versions prior to 6.x-1.3. This vulnerability specifically affects environments where multiple users access the system through different web browsers from the same IP address, creating a scenario where Internet Explorer sessions become confused and incorrectly associate file upload operations with the wrong user accounts. The issue stems from inadequate session handling mechanisms that fail to properly distinguish between concurrent users sharing the same network address, leading to potential cross-contamination of file upload operations.
The technical root cause of this vulnerability lies in the module's failure to implement robust session isolation mechanisms when processing file upload requests. When users from the same IP address attempt to upload files simultaneously using different browsers, particularly Internet Explorer, the system's session management logic becomes compromised. This results in file upload operations being incorrectly attributed to different user accounts than intended, potentially allowing unauthorized access to or modification of files belonging to other users. The vulnerability specifically manifests during file upload processes, where the module fails to properly validate or maintain session context, creating a pathway for session switching behavior.
The operational impact of this vulnerability extends beyond simple file upload confusion and can potentially enable privilege escalation or data exposure attacks. An attacker exploiting this vulnerability could upload files to another user's directory, potentially leading to unauthorized access to sensitive information, or could manipulate the file system to execute malicious code if the application allows executable file uploads. The unspecified nature of the impact suggests that depending on the system configuration and user permissions, this vulnerability could lead to various security consequences including data leakage, unauthorized file access, or even complete system compromise through file upload attacks. This type of vulnerability directly violates the principle of least privilege and can undermine the integrity of user data management within the Drupal application.
Organizations should immediately upgrade to filedepot module version 6.x-1.3 or later to address this vulnerability, as no reliable workarounds exist for the session management flaw. The recommended mitigation strategy involves implementing proper session isolation techniques and ensuring that all file upload operations maintain strict user context validation. Security teams should also consider implementing additional monitoring for unusual file upload patterns and user account behavior that might indicate session switching attempts. This vulnerability aligns with CWE-613, which addresses insufficient session management, and represents a clear violation of the ATT&CK technique T1078 for valid accounts, as it enables unauthorized access to user resources through session confusion. Organizations should also review their network configurations to ensure proper session tracking mechanisms are in place and consider implementing additional authentication layers for file upload operations to prevent unauthorized access to user directories.