Critical WordPress Form Plugin Vulnerability Affects Up To +200,000 Installs

Critical WordPress Form Plugin Vulnerability Affects Up To +200,000 Installs

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  • December 5, 2023
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Safety researchers at Wordfence detailed a important safety flaw within the MW WP Type plugin, affecting variations 5.0.1 and earlier. The vulnerability permits unauthenticated menace actors to take advantage of the plugin by importing arbitrary recordsdata, together with probably malicious PHP backdoors, with the power to execute these recordsdata on the server.

MW WP Type Plugin

The MW WP Type plugin helps to simplify type creation on WordPress web sites utilizing a shortcode builder.

It makes it straightforward for customers to create and customise types with numerous fields and choices.

The plugin has many options, together with one that enables file uploads utilizing the [mwform_file name=”file”] shortcode for the aim of information assortment. It’s this particular characteristic that’s exploitable on this vulnerability.

Unauthenticated Arbitrary File Add Vulnerability

An Unauthenticated Arbitrary File Add Vulnerability is a safety problem that enables hackers to add probably dangerous recordsdata to a web site. Unauthenticated signifies that the attacker doesn’t must be registered with the web site or want any sort of permission degree that comes with a person permission degree.

These sorts of vulnerabilities can result in distant code execution, the place the uploaded recordsdata are executed on the server, with the potential to permit the attackers to take advantage of the web site and web site guests.

The Wordfence advisory famous that the plugin has a test for sudden filetypes however that it doesn’t perform because it ought to.

In keeping with the safety researchers:

“Sadly, though the file sort test perform works completely and returns false for harmful file varieties, it throws a runtime exception within the strive block if a disallowed file sort is uploaded, which shall be caught and dealt with by the catch block.

…even when the harmful file sort is checked and detected, it is just logged, whereas the perform continues to run and the file is uploaded.

Because of this attackers might add arbitrary PHP recordsdata after which entry these recordsdata to set off their execution on the server, reaching distant code execution.”

There Are Situations For A Profitable Assault

The severity of this menace will depend on the requirement that the “Saving inquiry knowledge in database” choice within the type settings is required to be enabled to ensure that this safety hole to be exploited.

The safety advisory notes that the vulnerability is rated important with a rating of 9.8 out of 10.

Actions To Take

Wordfence strongly advises customers of the MW WP Type plugin to replace their variations of the plugin.

The vulnerability is patched within the lutes model of the plugin, model 5.0.2.

The severity of the menace is especially important for customers who’ve enabled the “Saving inquiry knowledge in database” choice within the type settings and that’s compounded by the truth that no permission ranges are wanted to execute this assault.

Learn the Wordfence advisory:

Update ASAP! Critical Unauthenticated Arbitrary File Upload in MW WP Form Allows Malicious Code Execution

Featured Picture by Shutterstock/Alexander_P

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