CVE-2023-2117 : Vulnerability Insights and Analysis

This article provides insights into CVE-2023-2117, focusing on the vulnerability identified in the Image Optimizer by 10web plugin version 1.0.27 and earlier.

Understanding CVE-2023-2117

CVE-2023-2117 highlights a vulnerability in the Image Optimizer by 10web WordPress plugin that allows high-privileged users, such as admins, to access files and directories outside the site's root directory due to improper sanitization of the "dir" parameter.

What is CVE-2023-2117?

The CVE-2023-2117 vulnerability is classified under CWE-22, indicating an improper limitation of a pathname to a restricted directory, also known as a 'Path Traversal' vulnerability. In this case, the plugin fails to properly restrict access, enabling users with elevated privileges to view sensitive information located outside the intended directory.

The Impact of CVE-2023-2117

The impact of CVE-2023-2117 can be severe as it allows malicious actors or unauthorized users to access and potentially manipulate files or directories that should be restricted. This could lead to unauthorized data disclosure, unauthorized actions on the server, or other security breaches.

Technical Details of CVE-2023-2117

The technical details of CVE-2023-2117 shed light on the vulnerability, the affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability lies in the Image Optimizer by 10web plugin versions prior to 1.0.27, where the plugin fails to properly sanitize the "dir" parameter during the handling of the get_subdirs ajax action. This oversight allows privileged users to explore file and directory names beyond the designated site root.

Affected Systems and Versions

The Image Optimizer by 10web plugin versions prior to 1.0.27 are affected by CVE-2023-2117. Users utilizing versions lower than 1.0.27 are at risk of exploitation if not promptly addressed.

Exploitation Mechanism

Exploiting CVE-2023-2117 involves leveraging the lack of proper sanitization in the plugin to access files and directories that should be inaccessible. By manipulating the "dir" parameter, malicious actors can explore sensitive information outside the expected directory structure.

Mitigation and Prevention

Addressing CVE-2023-2117 requires immediate action to mitigate the risks associated with the vulnerability and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update the Image Optimizer by 10web plugin to version 1.0.27 or later to patch the vulnerability and enhance security.
Monitoring access logs for any suspicious activities related to unauthorized exploration of directories can help detect potential exploitation attempts.

Long-Term Security Practices

Implementing strict input validation mechanisms within plugins can help prevent similar path traversal vulnerabilities in the future.
Regular security audits and penetration testing can identify and address vulnerabilities before they are exploited.

Patching and Updates

Regularly updating plugins, themes, and the WordPress core to the latest versions ensures that security patches are applied promptly, reducing the risk of exploitation from known vulnerabilities like CVE-2023-2117.