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Unrestricted Upload of File with Dangerous Type

CVE-2024-47823

High
7.7/10

Summary

Livewire is a full-stack framework for Laravel that allows for dynamic UI components without leaving PHP. In livewire/livewire package versions through 2.12.6 and 3.0.0-beta.1 through 3.5.1, the file extension of an uploaded file is guessed based on the MIME type. As a result, the actual file extension from the file name is not validated. An attacker can therefore bypass the validation by uploading a file with a valid MIME type (e.g., `image/png`) and a ".php" file extension. If the following criteria are met, the attacker can carry out an RCE attack: 1. Filename is composed of the original file name using "$file->getClientOriginalName()". 2. Files stored directly on your server on a public storage disk. 3. Webserver is configured to execute ".php" files. All users are advised to upgrade. There are no known workarounds for this vulnerability.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-434 - Unrestricted Upload of File with dangerous type

'Unrestricted file upload with dangerous type' attacks involve an attacker uploading or transferring files of dangerous types to the server. The severity of such an attack depends upon the execution mechanism and the storage location of the uploaded file. Thus, it may range from simple defacement to arbitrary file execution, and complete system takeover.

References

Advisory Timeline

  • Published