CVE-2007-5278 in Zomplog
Summary
by MITRE
Zomplog 3.8.1 and earlier stores potentially sensitive information under the web root with insufficient access control, which allows remote attackers to download files that were uploaded by users, as demonstrated by obtaining a directory listing via a direct request to /upload and then retrieving individual files. NOTE: in a non-default configuration, the directory listing is denied, but filenames may be predicable.
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Analysis
by VulDB Data Team • 10/07/2024
The vulnerability identified as CVE-2007-5278 affects Zomplog versions 3.8.1 and earlier, presenting a critical security flaw in the application's file handling and access control mechanisms. This issue stems from the application's improper configuration of file storage permissions, where sensitive user-uploaded content is placed in directories accessible through the web root without adequate protection measures. The flaw enables remote attackers to bypass normal access controls and directly retrieve files that users have uploaded to the system, creating a significant data exposure risk.
The technical implementation of this vulnerability involves the application's failure to enforce proper access control policies for uploaded files stored in the web-accessible directory structure. When users upload files through the Zomplog application, these files are placed in directories that are directly accessible via standard web requests. Attackers can exploit this by first obtaining a directory listing through a direct request to the /upload path, which reveals the filenames of uploaded content. Even when directory listing is disabled in non-default configurations, the predictability of filenames allows attackers to systematically retrieve individual files without proper authentication or authorization. This represents a fundamental failure in the principle of least privilege and proper file access control implementation.
The operational impact of this vulnerability extends beyond simple file retrieval, as it provides attackers with access to potentially sensitive user data that may include personal documents, images, or other confidential information. The vulnerability is particularly concerning because it operates without requiring authentication, making it accessible to anyone who can reach the affected web application. This creates a persistent risk for organizations using vulnerable versions of Zomplog, as attackers can continuously monitor and harvest uploaded content. The flaw demonstrates poor security design practices and violates established security principles regarding separation of concerns between web-accessible and protected data storage areas.
Mitigation strategies for CVE-2007-5278 should focus on implementing proper access controls and file storage separation. Organizations should immediately upgrade to Zomplog versions that address this vulnerability, as the flaw represents a fundamental security weakness in the application's architecture. The recommended solution involves moving uploaded files outside of the web root directory and implementing proper access controls that require authentication and authorization for file retrieval. This approach aligns with CWE-276, which addresses improper file permissions, and follows ATT&CK techniques related to privilege escalation and data access. Additionally, organizations should implement web application firewalls, regularly audit file access logs, and ensure that all web applications properly separate user-generated content from system-critical files to prevent similar vulnerabilities from occurring in the future.