CVE-2008-2482 in OneCMS
Summary
by MITRE
Directory traversal vulnerability in install_mod.php in insanevisions OneCMS 2.5 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the load parameter in a go action.
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Analysis
by VulDB Data Team • 10/24/2024
The directory traversal vulnerability identified as CVE-2008-2482 affects insanevisions OneCMS version 2.5 through improper input validation in the install_mod.php script. This flaw exists within the handling of the load parameter when processing go actions, creating an exploitable condition where remote attackers can manipulate file inclusion mechanisms to access arbitrary local files on the server. The vulnerability stems from insufficient sanitization of user-supplied input that directly influences file path resolution, allowing attackers to traverse directory structures beyond intended boundaries.
The technical implementation of this vulnerability leverages the .. (dot dot) sequence in the load parameter to navigate upward through the directory hierarchy. When the application processes the go action with the malicious load parameter containing directory traversal sequences, it fails to properly validate or sanitize the input before using it in file inclusion operations. This allows an attacker to specify paths that reference files outside the intended application directory structure, potentially accessing sensitive system files, configuration data, or other resources that should remain protected.
From an operational impact perspective, this vulnerability creates significant security risks for systems running the affected OneCMS version. Remote attackers can leverage this flaw to execute arbitrary code on the target system, potentially leading to full system compromise. The vulnerability enables attackers to read sensitive files including database credentials, configuration files, and other system information that could facilitate further attacks. Additionally, successful exploitation could allow attackers to upload and execute malicious files, establishing persistent access to the compromised system.
The vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. This weakness allows attackers to access files and directories that are stored outside the intended directory structure. The attack pattern follows typical directory traversal techniques documented in the MITRE ATT&CK framework under the technique of "Path Traversal" with specific references to command and control activities that can lead to privilege escalation and data exfiltration.
Mitigation strategies for this vulnerability include implementing proper input validation and sanitization of all user-supplied parameters, particularly those used in file inclusion operations. Organizations should apply the vendor-supplied patch or upgrade to a newer version of OneCMS that addresses this issue. Additionally, implementing proper access controls and restricting file inclusion capabilities to only trusted sources can significantly reduce the risk of exploitation. Network segmentation and monitoring for suspicious file access patterns can provide additional layers of defense. Regular security assessments and code reviews focusing on input validation practices should be conducted to identify and remediate similar vulnerabilities in other applications.