CVE-2010-4867 in W-Agora
Summary
by MITRE
Directory traversal vulnerability in search.php3 (aka search.php) in W-Agora 4.2.1 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the bn parameter.
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Analysis
by VulDB Data Team • 12/07/2025
The vulnerability identified as CVE-2010-4867 represents a critical directory traversal flaw within the W-Agora web application version 4.2.1 and earlier. This issue manifests in the search.php3 script, which is commonly used for searching content within the application. The vulnerability arises from insufficient input validation and sanitization mechanisms that fail to properly handle maliciously crafted file paths. Attackers can exploit this weakness by manipulating the bn parameter to include directory traversal sequences such as .. which allows them to navigate outside the intended directory structure and access arbitrary local files on the server.
The technical implementation of 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. The flaw occurs when the application processes user-supplied input without adequate validation, enabling attackers to manipulate file inclusion mechanisms. In the context of W-Agora, when the bn parameter contains directory traversal sequences, the application fails to sanitize this input before using it in file operations, creating an opportunity for attackers to access sensitive files that should remain protected. This vulnerability directly enables arbitrary file inclusion attacks, where malicious actors can potentially execute code or retrieve confidential data from the server filesystem.
The operational impact of CVE-2010-4867 is significant and multifaceted, encompassing data exposure, system compromise, and potential service disruption. Successful exploitation can lead to unauthorized access to sensitive files including configuration data, database credentials, application source code, and potentially system files that could provide attackers with deeper system insights. The vulnerability can be leveraged to execute arbitrary code on the target system, depending on the file inclusion mechanism and system configuration. This creates a pathway for attackers to escalate privileges, establish persistent access, or deploy additional malicious payloads. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the system, making it particularly dangerous for web applications handling sensitive data.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and sanitization measures. Organizations should immediately upgrade to W-Agora versions that address this vulnerability, as the vendor likely released patches to resolve the directory traversal issue. Input validation should include strict filtering of special characters and directory traversal sequences, particularly the .. (dot dot) notation, in all user-supplied parameters. The application should implement proper path validation that ensures all file operations occur within designated safe directories. Additionally, the principle of least privilege should be enforced by running the web application with minimal required permissions and by implementing proper access controls. Security monitoring and logging should be enhanced to detect unusual file access patterns that might indicate exploitation attempts. Organizations should also consider implementing web application firewalls and intrusion detection systems to provide additional layers of protection against such attacks. The vulnerability demonstrates the critical importance of proper input validation in web applications and aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation could lead to command execution capabilities through file inclusion mechanisms.