CVE-2008-2818 in Easy-Clanpage
Summary
by MITRE
Directory traversal vulnerability in Easy-Clanpage 3.0 b1 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the section parameter to the default URI.
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Analysis
by VulDB Data Team • 10/28/2024
The vulnerability identified as CVE-2008-2818 represents a critical directory traversal flaw affecting Easy-Clanpage version 3.0 build 1. This security weakness stems from inadequate input validation within the application's parameter handling mechanism, specifically in how the section parameter is processed within the default URI. The flaw enables remote attackers to manipulate file inclusion paths by exploiting the .. (dot dot) sequence commonly used to navigate directory structures. When the application fails to properly sanitize user-supplied input containing directory traversal sequences, it becomes vulnerable to unauthorized file access and execution.
The technical exploitation of this vulnerability occurs through manipulation of the section parameter in the default URI, allowing attackers to traverse the file system hierarchy and access files that should remain protected. 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, also known as path traversal or directory traversal. The flaw operates at the application layer where user input directly influences file system operations, creating a dangerous condition where arbitrary file inclusion becomes possible. Attackers can leverage this weakness to access sensitive configuration files, database credentials, or even execute malicious code if the application processes the included files as executable content.
The operational impact of CVE-2008-2818 extends beyond simple information disclosure to potentially enable complete system compromise. Remote attackers can exploit this vulnerability to retrieve system files, access administrative interfaces, or execute arbitrary commands on the affected server. This vulnerability aligns with the MITRE ATT&CK framework under the technique T1059.007 for command and script injection, as successful exploitation can lead to code execution. The attack surface is particularly concerning for web applications that handle user input through URI parameters, as it demonstrates how insufficient input validation can result in privilege escalation and unauthorized system access. Organizations running Easy-Clanpage 3.0 b1 are at significant risk of data breaches, system compromise, and potential lateral movement within their network infrastructure.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures. The primary defense involves implementing strict parameter validation that rejects any input containing directory traversal sequences such as .. or %2e%2e. Security professionals should implement proper path normalization and canonicalization techniques to ensure that user-supplied input cannot manipulate file system paths. Additionally, the application should be configured to operate with minimal required privileges, limiting the potential damage from successful exploitation. Organizations should also consider implementing web application firewalls to detect and block suspicious URI patterns, while conducting regular security audits to identify similar vulnerabilities within their application portfolio. The remediation process must include updating to a patched version of Easy-Clanpage or implementing compensating controls that prevent the exploitation of this directory traversal vulnerability.