CVE-2008-5594 in Mini Blog
Summary
by MITRE
Multiple directory traversal vulnerabilities in index.php in Mini Blog 1.0.1 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the (1) page and (2) admin parameters.
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Analysis
by VulDB Data Team • 11/15/2024
The vulnerability identified as CVE-2008-5594 represents a critical directory traversal flaw within the Mini Blog 1.0.1 content management system. This vulnerability resides in the index.php script and affects the application's handling of user-supplied input parameters. The flaw specifically impacts the page and admin parameters, where the application fails to properly sanitize or validate input containing directory traversal sequences. Attackers can exploit this weakness by injecting .. (dot dot) sequences into these parameters, enabling them to navigate outside the intended directory structure and access arbitrary local files on the server. The vulnerability stems from inadequate input validation and improper path resolution mechanisms within the application's file inclusion process.
This directory traversal vulnerability directly maps to CWE-22, which defines improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw allows attackers to bypass normal access controls and potentially execute arbitrary code on the target system. The impact extends beyond simple file access, as successful exploitation can lead to complete system compromise. The vulnerability operates at the application layer and can be classified under the ATT&CK technique T1566.001 for initial access through malicious file execution. The lack of proper input sanitization creates a pathway for attackers to access sensitive system files, configuration data, and potentially other applications running on the same server. This type of vulnerability is particularly dangerous because it can be exploited without authentication in many cases.
The operational impact of CVE-2008-5594 is severe and multifaceted. Remote attackers can leverage this vulnerability to access critical system files, including configuration files that may contain database credentials, application secrets, or other sensitive information. The ability to execute arbitrary local files opens the door for privilege escalation and persistent access to the compromised system. Attackers can potentially use this vulnerability to deploy backdoors, exfiltrate data, or establish command and control channels. The vulnerability affects not only the targeted application but can also impact the broader server environment, potentially allowing attackers to explore other services or applications running on the same host. This makes the vulnerability particularly attractive to threat actors seeking to establish long-term access to the compromised infrastructure.
Mitigation strategies for CVE-2008-5594 must address both the immediate vulnerability and implement comprehensive security practices. The primary fix involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Applications should employ whitelisting mechanisms for valid parameter values and reject any input containing directory traversal sequences. The use of secure coding practices such as input normalization and proper path resolution should be enforced throughout the application codebase. Additionally, implementing proper access controls and privilege separation can limit the damage from successful exploitation. Organizations should also consider deploying web application firewalls to detect and block suspicious traversal attempts. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other applications. The vulnerability highlights the importance of following secure coding guidelines and implementing defense-in-depth strategies to protect against such attacks. System administrators should ensure that vulnerable applications are updated or patched immediately, and that proper monitoring is in place to detect potential exploitation attempts.