CVE-2023-40508 in Simple Editor
Summary
by MITRE • 05/03/2024
LG Simple Editor putCanvasDB Directory Traversal Arbitrary File Deletion Vulnerability. This vulnerability allows remote attackers to delete arbitrary files on affected installations of LG Simple Editor. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the putCanvasDB method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of SYSTEM. . Was ZDI-CAN-20010.
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Analysis
by VulDB Data Team • 04/10/2025
The CVE-2023-40508 vulnerability represents a critical directory traversal flaw in LG Simple Editor's putCanvasDB functionality that enables unauthenticated remote attackers to execute arbitrary file deletion operations. This vulnerability falls under the category of CWE-22 Directory Traversal, where insufficient input validation allows attackers to manipulate file paths and access files outside the intended directory structure. The vulnerability specifically affects LG Simple Editor installations and demonstrates a fundamental lack of proper path validation mechanisms within the application's file handling processes.
The technical exploitation of this vulnerability occurs through the putCanvasDB method which fails to properly sanitize user-supplied path parameters before executing file deletion operations. Attackers can craft malicious requests that manipulate the path traversal logic to target system files, configuration files, or other sensitive data within the application's directory structure. Since no authentication is required to exploit this vulnerability, it presents a severe risk to systems where LG Simple Editor is deployed without proper network segmentation or access controls. The vulnerability operates at the SYSTEM context level, meaning successful exploitation can result in complete system compromise and unauthorized file deletion across the entire system.
The operational impact of this vulnerability extends beyond simple file deletion to encompass potential system instability, data loss, and service disruption. Remote attackers can leverage this weakness to remove critical system files, configuration data, or application components that could lead to complete application failure or system compromise. This vulnerability aligns with ATT&CK technique T1070.004 for Indicator Removal on Host and T1490 for Data Destruction, as it enables attackers to eliminate evidence of their presence while potentially causing operational disruption. The lack of authentication requirements makes this vulnerability particularly dangerous as it can be exploited by anyone with network access to the affected system.
Mitigation strategies for CVE-2023-40508 should prioritize immediate patching of affected LG Simple Editor versions and implementation of network segmentation to restrict access to vulnerable systems. Organizations should deploy web application firewalls to filter malicious path traversal attempts and implement strict input validation for all file operations. The vulnerability highlights the importance of principle of least privilege in system design, where applications should operate with minimal required permissions and proper path validation. Security monitoring should include detection of suspicious file deletion patterns and unauthorized access attempts to system directories. Additionally, regular security assessments of third-party applications and proper vulnerability management processes should be implemented to prevent similar issues in other software components. The vulnerability serves as a reminder of the critical need for secure coding practices and comprehensive input validation in all file handling operations within web applications.