CVE-2022-39305 in Gin-vue-admin
Summary
by MITRE • 10/24/2022
Gin-vue-admin is a backstage management system based on vue and gin, which separates the front and rear of the full stack. Versions prior to 2.5.4 contain a file upload ability. The affected code fails to validate fileMd5 and fileName parameters, resulting in an arbitrary file being read. This issue is patched in 2.5.4b. There are no known workarounds.
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Analysis
by VulDB Data Team • 10/24/2022
The gin-vue-admin framework represents a popular full-stack backend management system that combines vue.js for frontend development with gin-gonic for backend api implementation. This particular vulnerability affects versions prior to 2.5.4 and stems from inadequate input validation within the file upload functionality. The system's file handling mechanism fails to properly validate critical parameters including fileMd5 and fileName, creating a path for malicious actors to exploit. This weakness exists within the application's core file management logic where user-supplied data should be rigorously sanitized before processing.
The technical flaw manifests as a lack of proper parameter validation that allows attackers to manipulate file upload requests through crafted fileMd5 and fileName values. This vulnerability falls under the category of improper input validation as defined by CWE-20, where the application fails to properly validate or sanitize user-supplied input before using it in file operations. The absence of proper validation creates a condition where arbitrary file reading becomes possible, potentially allowing attackers to access sensitive files within the system's file structure. This weakness directly enables path traversal and arbitrary file access scenarios that can compromise system integrity and confidentiality.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to complete system compromise when combined with other attack vectors. An attacker could leverage this flaw to read configuration files, database credentials, or even system binaries that might contain sensitive information. The vulnerability's severity is compounded by the fact that it affects the core file handling capabilities of the management system, potentially allowing unauthorized access to administrative functions and data repositories. This weakness creates a persistent threat that could be exploited by attackers with minimal technical expertise, making it particularly dangerous in production environments where such management systems are commonly deployed.
Mitigation strategies for this vulnerability require immediate implementation of version updates to 2.5.4b or later, as this patch specifically addresses the file validation issues within the gin-vue-admin framework. Organizations should also implement additional defensive measures including input sanitization at multiple layers, file type validation, and access control restrictions for file operations. Network segmentation and monitoring of file upload activities can help detect potential exploitation attempts. The vulnerability's classification under CWE-20 highlights the importance of implementing comprehensive input validation across all application components, particularly those handling user-supplied data. Security teams should also consider implementing automated vulnerability scanning tools that can detect similar validation weaknesses in other applications within their environment, aligning with ATT&CK framework techniques related to credential access and privilege escalation through software vulnerabilities.