Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. In versions 2.61.2 and below, any unauthenticated visitor can register a full administrator account when self-registration (signup = true) is enabled and the default user permissions have perm.admin = true. The signup handler blindly applies all default settings (including Perm.Admin) to the new user without any server-side guard that strips admin from self-registered accounts. The signupHandler is supposed to create unprivileged accounts for new visitors. It contains no explicit user.Perm.Admin = false reset after applying defaults. If an administrator (intentionally or accidentally) configures defaults.perm.admin = true and also enables signup, every account created via the public registration endpoint is an administrator with full control over all files, users, and server settings. This issue has been resolved in version 2.62.0.

Weaknesses 2

Affected Products 1

References 3

• github.com https://github.com/filebrowser/filebrowser/commit/a63573b67eb302167b4c4f218361a2d0c138deab
  Patch
• github.com https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0
  ProductRelease Notes
• github.com https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5gg9-5g7w-hm73
  ExploitVendor Advisory

Remediation

• github.com https://github.com/filebrowser/filebrowser/commit/a63573b67eb302167b4c4f218361a2d0c138deab
  Patch