CVE-2023-38947 in WBCE
Summary
by MITRE • 08/03/2023
An arbitrary file upload vulnerability in the /languages/install.php component of WBCE CMS v1.6.1 allows attackers to execute arbitrary code via a crafted PHP file.
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Analysis
by VulDB Data Team • 01/21/2026
The CVE-2023-38947 vulnerability represents a critical arbitrary file upload flaw within the WBCE CMS v1.6.1 platform that exposes systems to remote code execution attacks. This vulnerability specifically targets the /languages/install.php component, which serves as a legitimate installation interface for language packs but fails to implement proper file validation mechanisms. The flaw allows malicious actors to bypass security controls and upload malicious PHP files that can subsequently be executed on the target server, creating a severe attack surface that can be exploited without authentication.
The technical implementation of this vulnerability stems from insufficient input validation and file type checking within the language installation process. When users attempt to install language packs through the /languages/install.php endpoint, the system does not adequately verify the file extensions, content types, or file contents of uploaded files. This weakness enables attackers to upload PHP files containing malicious code, which can then be executed by the web server when accessed through the application's URL structure. The vulnerability aligns with CWE-434, which describes insecure upload of executable files, and represents a classic example of insufficient validation of file uploads that can lead to arbitrary code execution.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and potential data breaches. Attackers can leverage this flaw to deploy web shells, establish persistent backdoors, exfiltrate sensitive data, or use the compromised server as a launchpad for further attacks within the network infrastructure. The vulnerability affects the entire WBCE CMS ecosystem and can result in unauthorized access to databases, user credentials, and sensitive configuration files. This represents a significant risk to organizations relying on the platform, as the attack vector requires no privileged access and can be exploited remotely.
Security mitigations for CVE-2023-38947 should prioritize immediate patching of the WBCE CMS to version 1.6.2 or later, which contains the necessary fixes for the file upload validation. Organizations should implement additional defensive measures including restricting file upload capabilities to authenticated administrators only, implementing strict file extension filtering, and configuring web server rules to prevent execution of uploaded files in web-accessible directories. Network segmentation and intrusion detection systems should monitor for suspicious file upload activities, while regular security audits should verify proper implementation of file validation controls. The vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1505.003 for server-side include, emphasizing the need for proper input validation and secure file handling in web applications.