module
elFinder PHP Connector exiftran Command Injection
| Disclosed |
|---|
| 2019-02-26 |
Disclosed
2019-02-26
Description
This module exploits a command injection vulnerability in elFinder
versions prior to 2.1.48.
The PHP connector component allows unauthenticated users to upload
files and perform file modification operations, such as resizing and
rotation of an image. The file name of uploaded files is not validated,
allowing shell metacharacters.
When performing image operations on JPEG files, the filename is passed
to the `exiftran` utility without appropriate sanitization, causing
shell commands in the file name to be executed, resulting in remote
command injection as the web server user.
The PHP connector is not enabled by default.
The system must have `exiftran` installed and in `$PATH`.
This module has been tested successfully on elFinder versions 2.1.47,
2.1.20 and 2.1.16 on Ubuntu.
versions prior to 2.1.48.
The PHP connector component allows unauthenticated users to upload
files and perform file modification operations, such as resizing and
rotation of an image. The file name of uploaded files is not validated,
allowing shell metacharacters.
When performing image operations on JPEG files, the filename is passed
to the `exiftran` utility without appropriate sanitization, causing
shell commands in the file name to be executed, resulting in remote
command injection as the web server user.
The PHP connector is not enabled by default.
The system must have `exiftran` installed and in `$PATH`.
This module has been tested successfully on elFinder versions 2.1.47,
2.1.20 and 2.1.16 on Ubuntu.
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