CVE-2025-54769 in LPAR2RRD
Summary
by MITRE • 07/29/2025
An authenticated, read-only user can upload a file and perform a directory traversal to have the uploaded file placed in a location of their choosing. This can be used to overwrite existing PERL modules within the application to achieve remote code execution (RCE) by an attacker.
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Analysis
by VulDB Data Team • 10/10/2025
This vulnerability represents a critical directory traversal flaw that exploits improper input validation in file upload mechanisms within a web application. The issue affects authenticated users with read-only privileges, demonstrating how privilege escalation can occur through seemingly benign functionality. The vulnerability is classified under CWE-22, which specifically addresses directory traversal attacks, where attackers manipulate file paths to access or modify files outside of intended directories. The flaw allows an authenticated user to upload files with malicious paths that can bypass normal directory restrictions, effectively creating a path traversal condition that enables arbitrary file placement.
The technical implementation of this vulnerability involves the application's failure to properly sanitize or validate file paths during the upload process. When users upload files, the system should enforce strict path validation to prevent directory traversal sequences such as ../ or ..\ that could allow attackers to navigate outside of designated upload directories. The vulnerability specifically enables attackers to place uploaded files in arbitrary locations, including system directories where perl modules are stored. This represents a severe design flaw in the application's file handling logic, as it fails to implement proper access controls and path validation mechanisms that should prevent unauthorized file placement in critical system areas.
The operational impact of this vulnerability extends far beyond simple file manipulation, as it creates a pathway for remote code execution through the strategic placement of malicious perl modules. When attackers can overwrite existing perl modules, they effectively gain the ability to inject malicious code that will execute whenever the application or system calls those modules. This type of attack vector aligns with ATT&CK technique T1059.007 for scripting languages, where adversaries leverage system components to execute malicious code. The vulnerability's exploitation requires an authenticated user account, but the privilege escalation aspect means that even read-only users can achieve full system compromise through this vector.
Security controls should focus on implementing strict input validation and path sanitization for all file upload operations, ensuring that file paths are normalized and validated against a whitelist of acceptable directories. The application must enforce proper access controls that prevent file placement outside of designated upload areas, and should implement additional protections such as file type validation, content inspection, and proper file permissions. Organizations should also consider implementing web application firewalls that can detect and block directory traversal attempts, as well as monitoring for suspicious file placement activities that could indicate exploitation attempts. The vulnerability demonstrates the critical importance of principle of least privilege and proper input validation in preventing privilege escalation attacks that can lead to complete system compromise.