CVE-2008-0435 in OZJournals
Summary
by MITRE
Directory traversal vulnerability in index.php in OZJournals 2.1.1 allows remote attackers to read portions of arbitrary files via a .. (dot dot) in the id parameter in a printpreview action.
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Analysis
by VulDB Data Team • 10/14/2024
The vulnerability described in CVE-2008-0435 represents a classic directory traversal flaw that exists within the OZJournals 2.1.1 web application. This security weakness resides in the index.php file and specifically affects the printpreview functionality when processing the id parameter. The flaw allows remote attackers to manipulate file access paths by injecting .. (dot dot) sequences into the id parameter, enabling them to navigate outside the intended directory boundaries and access arbitrary files on the server filesystem. This type of vulnerability falls under the category of insecure direct object references and represents a fundamental breakdown in input validation and file access controls.
The technical implementation of this vulnerability demonstrates how insufficient sanitization of user-supplied input can lead to unauthorized file system access. When the application processes the id parameter without proper validation or canonicalization, it fails to prevent path traversal sequences that would normally be blocked by the operating system's file access mechanisms. The printpreview action becomes a vector through which attackers can craft malicious requests that bypass normal file access restrictions, potentially exposing sensitive system files, configuration data, or other confidential information stored on the server. This vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw operates at the application layer and can be exploited without requiring any special privileges or authentication, making it particularly dangerous in publicly accessible web environments.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can provide attackers with access to critical system resources that may contain sensitive data, application configuration files, or even database credentials. An attacker who successfully exploits this vulnerability could potentially read system files such as /etc/passwd, application source code, or configuration files that might contain database connection strings, API keys, or other confidential information. The implications are significant for organizations using OZJournals 2.1.1, as this vulnerability could lead to complete system compromise if combined with other exploitation techniques or if the application has access to sensitive data repositories. The vulnerability also represents a risk to data integrity and confidentiality, as unauthorized access to files could enable data modification or exfiltration activities that fall under the ATT&CK framework's data exposure and credential access techniques.
Mitigation strategies for CVE-2008-0435 should focus on implementing proper input validation and canonicalization of all user-supplied parameters before they are processed by the application. The most effective approach involves sanitizing the id parameter to remove or encode any path traversal sequences, ensuring that the application only accesses files within the intended directory structure. Organizations should implement a whitelist approach for file access, where only predetermined, safe file paths are allowed, rather than relying on user input for file operations. Additionally, the application should employ proper file access controls and privilege separation to minimize the impact of any potential exploitation attempts. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application, and the OZJournals software should be updated to a patched version that addresses this specific vulnerability. The remediation process should also include implementing proper logging and monitoring to detect potential exploitation attempts and ensure that any unauthorized file access attempts are properly logged for forensic analysis.