CVE-2023-6187 Paid Memberships Pro <= 2.12.3 - Authenticated (Subscriber+) Arbitrary File Upload

High 7.5 Published Updated

Authenticated attackers can upload arbitrary files leading to remote code execution if specific payment methods and custom user fields are configured.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-6187?

CVE-2023-6187 is a high-severity vulnerability in strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions, published on 18 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Paid Memberships Pro plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'pmpro_paypalexpress_session_vars_for_user_fields' function in versions up to, and including, 2.12.3. This makes it possible for authenticated attackers with subscriber privileges or above, to upload arbitrary files on the affected site's server which may make remote code execution possible. This can be exploited if 2Checkout (deprecated since version 2.6) or PayPal Express is set as the payment method and a custom user field is added that is only visible at profile, and not visible at checkout according to its settings.

Weakness: CWE-434

Which versions are affected by CVE-2023-6187?

It affects 1 product.

Products include Strangerstudios Paid Memberships Pro.

How do I fix CVE-2023-6187?

No fix has been published for CVE-2023-6187 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-6187 being exploited?

There is no known exploitation of CVE-2023-6187 in the wild and no public exploit code.

Sources

Also known as GHSA-wwhh-cm65-x8qq.

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