CVE-2024-31207 in vite
Summary
by MITRE • 04/04/2024
Vite (French word for "quick", pronounced /vit/, like "veet") is a frontend build tooling to improve the frontend development experience.`server.fs.deny` does not deny requests for patterns with directories. This vulnerability has been patched in version(s) 5.2.6, 5.1.7, 5.0.13, 4.5.3, 3.2.10 and 2.9.18.
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Analysis
by VulDB Data Team • 05/09/2024
The vulnerability identified as CVE-2024-31207 affects Vite, a popular frontend build tool designed to enhance developer productivity through rapid development workflows. This issue specifically resides within the server filesystem access control mechanisms, where the `server.fs.deny` configuration parameter fails to properly restrict access to directory patterns. The flaw represents a critical security oversight in how Vite handles file system permissions during development server operations, potentially allowing unauthorized access to sensitive directories and files that should remain protected.
This vulnerability stems from an insufficient implementation of access control logic within Vite's development server component. The `server.fs.deny` configuration is intended to prevent access to specific file patterns and directories, but the flaw allows requests for directory-based patterns to bypass these restrictions. This technical deficiency creates a path for attackers to potentially access restricted filesystem locations, including sensitive configuration files, source code directories, or other protected resources that should not be publicly accessible during development. The issue manifests when the system processes directory traversal requests, failing to properly evaluate whether these patterns should be denied access based on the configured deny rules.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to gain unauthorized access to development environments and potentially compromise the entire project structure. In development contexts where Vite serves as the primary frontend tool, attackers could exploit this weakness to access sensitive project files, configuration data, or even discover internal project structures that might aid in further exploitation. The vulnerability affects multiple major versions of Vite, indicating a widespread impact across different development environments and potentially affecting numerous projects that rely on this build tool for their frontend workflows. This creates significant risk for organizations where development servers might be exposed to untrusted networks or where proper network segmentation is not implemented.
Security researchers have identified this issue as a configuration-based access control flaw that aligns with common weaknesses in web application security models. The vulnerability demonstrates a failure in proper input validation and access control implementation, similar to issues categorized under CWE-284 (Improper Access Control) and CWE-285 (Improper Authorization). From an operational security perspective, this vulnerability can be exploited through standard web application attacks, potentially allowing attackers to enumerate directory structures or access files that should remain protected. The fix implemented in versions 5.2.6, 5.1.7, 5.0.13, 4.5.3, 3.2.10, and 2.9.18 addresses the core issue by properly implementing the deny pattern matching for directory requests, ensuring that configured access restrictions are properly enforced. Organizations should immediately upgrade to these patched versions to mitigate the risk of unauthorized filesystem access during development operations. The vulnerability also highlights the importance of proper security testing for development tools, particularly those that serve content in network-accessible environments where security controls must be rigorously enforced.