CVE-2014-3772 in TeamPass
Summary
by MITRE
TeamPass before 2.1.20 allows remote attackers to bypass access restrictions via a request to index.php followed by a direct request to a file that calls the session_start function before checking the CPM key, as demonstrated by a request to sources/upload/upload.files.php.
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Analysis
by VulDB Data Team • 03/26/2022
The vulnerability identified as CVE-2014-3772 affects TeamPass versions prior to 2.1.20 and represents a critical access control flaw that enables remote attackers to bypass authentication mechanisms. This issue stems from improper session handling and authorization checks within the application's core components, specifically in how the system processes requests to files that initiate sessions before validating user credentials. The vulnerability is particularly concerning as it allows unauthorized access to sensitive functionality through a straightforward exploitation technique that does not require elevated privileges or complex attack vectors.
The technical implementation of this vulnerability occurs when a malicious actor crafts a request sequence that first accesses index.php and then directly targets a vulnerable file such as sources/upload/upload.files.php. The flaw exists because the session_start function is called in these files before the system performs the necessary CPM key validation checks that should occur prior to any session initialization. This premature session initialization creates a window where an attacker can manipulate the application state and gain access to restricted resources without proper authentication. The vulnerability is classified under CWE-285 which deals with improper authorization, specifically in the context of insufficient checks or incorrect checks for access control.
From an operational impact perspective, this vulnerability compromises the fundamental security model of TeamPass, potentially allowing attackers to upload malicious files, access restricted administrative functions, and manipulate stored data. The attack vector is particularly dangerous because it requires minimal sophistication and can be executed remotely without prior access to valid credentials. The vulnerability affects the application's core session management and authentication flow, potentially enabling full system compromise if attackers can leverage the access to perform additional attacks or escalate privileges within the application environment.
The exploitation of this vulnerability aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to privilege escalation and initial access through unauthenticated attacks. The issue demonstrates poor input validation and session management practices that violate security best practices established in various industry standards. Organizations using affected versions of TeamPass should immediately implement mitigations including upgrading to version 2.1.20 or later, implementing proper access control checks before session initialization, and conducting thorough security reviews of session handling mechanisms. Additionally, network segmentation and monitoring for suspicious request patterns can help detect potential exploitation attempts and provide early warning of unauthorized access attempts.