CVE-2008-4519 in Fastpublish
Summary
by MITRE
Multiple directory traversal vulnerabilities in Fastpublish CMS 1.9999 d allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the target parameter to (1) index2.php and (2) index.php.
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Analysis
by VulDB Data Team • 11/06/2024
The vulnerability identified as CVE-2008-4519 represents a critical directory traversal flaw within the Fastpublish Content Management System version 1.9999. This vulnerability stems from insufficient input validation mechanisms that fail to properly sanitize user-supplied parameters before processing them within the application's file inclusion logic. The flaw specifically affects two primary entry points in the system's codebase namely index2.php and index.php where the target parameter is processed without adequate security controls to prevent malicious path manipulation attempts.
The technical implementation of this vulnerability exploits the fundamental weakness in how the application handles file path resolution when processing user input through the target parameter. Attackers can leverage the .. (dot dot) sequence to navigate upward through the directory structure and access files that should remain protected from external access. This type of attack falls under the CWE-22 category known as "Improper Limitation of a Pathname to a Restricted Directory" which is classified as a common weakness in web application security. The vulnerability enables attackers to bypass normal access controls and potentially execute arbitrary code on the affected system.
Operationally, this directory traversal vulnerability poses significant risks to organizations utilizing the affected Fastpublish CMS version. Remote attackers can exploit this flaw to include and execute arbitrary local files, which may lead to complete system compromise including data exfiltration, privilege escalation, and persistent backdoor installation. The impact extends beyond simple information disclosure as the ability to execute arbitrary code fundamentally undermines the security posture of the affected web server. According to ATT&CK framework, this vulnerability maps to T1059.007 "Command and Scripting Interpreter: PowerShell" and T1566.001 "Phishing: Spearphishing Attachment" as attackers can leverage this flaw to deploy malicious payloads and establish persistent access to the compromised system.
Mitigation strategies for CVE-2008-4519 should include immediate patching of the Fastpublish CMS to a version that properly implements input validation and sanitization for file inclusion parameters. Organizations should implement proper parameter validation that rejects any input containing directory traversal sequences such as .. or %2e%2e. Additionally, the principle of least privilege should be enforced by ensuring that web applications run with minimal required permissions and that sensitive files are properly protected through access control mechanisms. Network segmentation and intrusion detection systems should be configured to monitor for suspicious file access patterns that may indicate exploitation attempts. The vulnerability also highlights the importance of regular security assessments and vulnerability scanning to identify and remediate similar weaknesses across the entire application portfolio.