CVE-2013-4272 in BOTCHA
Summary
by MITRE
The BOTCHA Spam Prevention module 7.x-1.x before 7.x-1.6, 7.x-2.x before 7.x-2.1, and 7.x-3.x before 7.x-3.3 for Drupal, when the debugging level is set to 5 or 6, logs the content of submitted forms, which allows context-dependent users to obtain sensitive information such as usernames and passwords by reading the log file.
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Analysis
by VulDB Data Team • 05/10/2017
The vulnerability identified as CVE-2013-4272 affects the BOTCHA Spam Prevention module for Drupal platforms, specifically targeting versions 7.x-1.x before 7.x-1.6, 7.x-2.x before 7.x-2.1, and 7.x-3.x before 7.x-3.3. This security flaw represents a critical information disclosure vulnerability that arises from improper logging practices within the module's debugging functionality. The vulnerability manifests when administrators configure the debugging level to 5 or 6, which are typically used for detailed development and troubleshooting purposes but become dangerous in production environments where sensitive data handling is paramount.
The technical implementation of this vulnerability stems from the module's failure to properly sanitize or filter form submission data before logging it to disk. When debugging levels 5 or 6 are enabled, the module indiscriminately records all form content including user credentials, personal information, and other sensitive data that users might submit through web forms. This logging behavior creates a persistent exposure point where unauthorized individuals with access to the server's file system can directly read the log files and extract confidential information. The flaw essentially transforms the debugging feature into an information leakage mechanism, undermining the security assumptions of the application's data protection measures.
The operational impact of this vulnerability extends beyond simple credential theft, as it can compromise user privacy and organizational security posture. Attackers can leverage this weakness to obtain usernames, passwords, personal identification information, and potentially other sensitive data submitted through Drupal forms. The vulnerability is particularly dangerous because it can be exploited by context-dependent users who have access to the server's file system or log files, which might include developers, system administrators, or attackers who have gained unauthorized access to the server. This information disclosure can facilitate further attacks including account takeover, privilege escalation, and lateral movement within the compromised environment. The vulnerability also violates fundamental security principles of least privilege and data protection, as it exposes sensitive information without proper access controls or data sanitization measures.
Mitigation strategies for CVE-2013-4272 require immediate action to address the root cause through module updates and configuration adjustments. Organizations should upgrade to the patched versions of the BOTCHA Spam Prevention module, specifically versions 7.x-1.6, 7.x-2.1, and 7.x-3.3, which contain proper logging sanitization and access controls. System administrators must disable debugging levels 5 and 6 in production environments and implement strict file system access controls on log directories to prevent unauthorized access. Additionally, organizations should implement proper log rotation and monitoring procedures to detect unusual access patterns to log files. The vulnerability aligns with CWE-200 (Information Disclosure) and represents a failure in secure logging practices that could be addressed through proper input validation and output sanitization techniques. From an ATT&CK framework perspective, this vulnerability maps to T1078 (Valid Accounts) and T1005 (Data from Local System) techniques, as it enables adversaries to obtain credentials and sensitive data from compromised systems. Security monitoring should include detection of unauthorized log file access attempts and anomalous debugging configuration changes to identify potential exploitation of this vulnerability.