CVE-2008-2695 in phpInv
Summary
by MITRE
Directory traversal vulnerability in entry.php in phpInv 0.8.0 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the action parameter.
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Analysis
by VulDB Data Team • 10/27/2024
The vulnerability identified as CVE-2008-2695 represents a critical directory traversal flaw within the phpInv 0.8.0 web application. This security weakness resides in the entry.php script where the application fails to properly validate user-supplied input passed through the action parameter. The vulnerability stems from insufficient input sanitization mechanisms that allow attackers to manipulate file paths using directory traversal sequences such as .. which enables them to navigate outside the intended directory structure and access arbitrary local files on the server. This type of vulnerability falls under the Common Weakness Enumeration category CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability is severe as it provides remote attackers with the capability to execute arbitrary code on the affected server by including and executing local files. Attackers can leverage this flaw to access sensitive system files, configuration data, database credentials, or other confidential information stored on the server. The vulnerability essentially allows an attacker to bypass normal access controls and potentially gain full control over the affected system. This type of attack can be classified under the MITRE ATT&CK framework as technique T1059.007 for command and script injection, and T1566.001 for spearphishing attachments, as the exploitation often involves crafting malicious payloads that can be delivered through web interfaces.
The technical exploitation of this vulnerability requires an attacker to craft a malicious request that includes directory traversal sequences in the action parameter of the entry.php script. When the application processes this input without proper validation, it can lead to unintended file inclusion, allowing attackers to read system files such as /etc/passwd or execute shell commands through the web server's permissions. The vulnerability is particularly dangerous because it can be exploited remotely without requiring authentication, making it an attractive target for automated attacks. Organizations running phpInv 0.8.0 should immediately implement mitigations including input validation, proper parameter sanitization, and the implementation of secure coding practices that prevent path traversal attacks. The recommended solution involves implementing strict input validation that filters out or rejects directory traversal sequences and ensures that all file operations are confined to predetermined directories. Additionally, the application should be updated to a newer version where this vulnerability has been patched and the developers have implemented proper access controls and input sanitization mechanisms.