CVE-2009-4383 in P forum
Summary
by MITRE
Directory traversal vulnerability in Pforum.php in Rocomotion P forum before 1.28 allows remote attackers to read arbitrary files via directory traversal sequences in unspecified vectors.
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Analysis
by VulDB Data Team • 12/22/2017
The vulnerability identified as CVE-2009-4383 represents a critical directory traversal flaw within the Rocomotion P forum software version 1.27 and earlier. This vulnerability exists in the pforum.php component and allows remote attackers to access arbitrary files on the affected system through carefully crafted directory traversal sequences. The issue stems from insufficient input validation and sanitization mechanisms that fail to properly restrict file access attempts. Directory traversal vulnerabilities of this nature are particularly dangerous because they can enable attackers to bypass normal access controls and potentially gain unauthorized access to sensitive system files, configuration data, or user information. The vulnerability affects the core functionality of the forum software and represents a fundamental security weakness in how the application handles file operations. 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. The attack vector for this vulnerability is particularly concerning as it allows remote exploitation without requiring authentication or local system access, making it highly attractive to malicious actors seeking to compromise web applications.
The technical implementation of this vulnerability occurs when the pforum.php script processes user-supplied input that contains directory traversal sequences such as ../ or ..\ characters. These sequences allow attackers to navigate outside the intended directory structure and access files that should normally be restricted. The unspecified vectors mentioned in the description indicate that the vulnerability can be triggered through multiple input points within the application, making it more difficult to fully mitigate without comprehensive input validation. When an attacker successfully exploits this vulnerability, they can potentially read sensitive files including configuration files, database credentials, user authentication data, or even system files that could provide further attack vectors. The impact extends beyond simple information disclosure as it can lead to complete system compromise if attackers can access critical system files or application configuration that contains database connection strings, encryption keys, or administrative credentials. The vulnerability demonstrates poor secure coding practices where the application fails to validate or sanitize file paths before processing user input, creating an opportunity for attackers to manipulate the application's file access behavior.
From an operational perspective, this vulnerability poses significant risks to organizations using Rocomotion P forum software, particularly those hosting public or semi-public forums where user input is common. The remote exploit capability means that attackers can target vulnerable systems from anywhere on the internet without requiring physical access or prior authentication. Organizations may experience data breaches, intellectual property theft, or complete system compromise if this vulnerability is exploited successfully. The implications extend to compliance requirements as many regulatory frameworks mandate protection against directory traversal attacks, and successful exploitation could result in violation of standards such as pci dss, hipaa, or soc 2. The vulnerability also impacts the availability and integrity of the forum service itself, as attackers could potentially delete or corrupt files, or use the access to launch further attacks against the broader network infrastructure. Security teams must consider that this vulnerability could be part of a larger attack chain where initial access through directory traversal leads to privilege escalation or lateral movement within the network. The attack surface is particularly broad since forum software typically handles user-generated content and file uploads, making it a common target for exploitation.
Mitigation strategies for CVE-2009-4383 should include immediate patching of the Rocomotion P forum software to version 1.28 or later, where the vulnerability has been addressed. Organizations should implement comprehensive input validation mechanisms that sanitize all user-supplied data before processing, particularly when handling file paths or directory navigation requests. The implementation of proper access controls and the principle of least privilege should be enforced to limit the impact of any successful exploitation attempts. Security measures should include regular security assessments, web application firewalls, and intrusion detection systems that can identify and block directory traversal attempts. Network segmentation and monitoring of file access patterns can help detect anomalous behavior that might indicate exploitation attempts. Organizations should also establish secure coding practices that prevent similar vulnerabilities in custom applications, including input validation, output encoding, and proper file access controls. The remediation process should include thorough testing to ensure that the patch does not introduce regressions in application functionality. Additionally, security awareness training for developers should emphasize the importance of validating user input and implementing proper security controls during the software development lifecycle to prevent such vulnerabilities from being introduced in the first place.