CVE-2021-24220 All Thrive Themes Legacy Themes < 2.0.0 - Unauthenticated Arbitrary File Upload and Option Deletion

Q: What is CVE-2021-24220?

CVE-2021-24220 is a critical vulnerability in FocusBlog by Thrive Themes, published on 12 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2021-24220 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24220 exists.

Q: How do I fix CVE-2021-24220?

No fix has been published for CVE-2021-24220 yet. Limit exposure of the affected software until one is available.

Critical 9.1 Published 12 Apr 2021 Updated 3 Aug 2024

Unauthenticated attackers can upload malicious PHP files via a REST API endpoint, leading to remote code execution on WordPress sites using affected Thrive Themes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-24220?

CVE-2021-24220 is a critical vulnerability in FocusBlog by Thrive Themes, published on 12 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Thrive “Legacy” Rise by Thrive Themes WordPress theme before 2.0.0, Luxe by Thrive Themes WordPress theme before 2.0.0, Minus by Thrive Themes WordPress theme before 2.0.0, Ignition by Thrive Themes WordPress theme before 2.0.0, FocusBlog by Thrive Themes WordPress theme before 2.0.0, Squared by Thrive Themes WordPress theme before 2.0.0, Voice WordPress theme before 2.0.0, Performag by Thrive Themes WordPress theme before 2.0.0, Pressive by Thrive Themes WordPress theme before 2.0.0, Storied by Thrive Themes WordPress theme before 2.0.0 register a REST API endpoint to compress images using the Kraken image optimization engine. By supplying a crafted request in combination with data inserted using the Option Update vulnerability, it was possible to use this endpoint to retrieve malicious code from a remote URL and overwrite an existing file on the site with it or create a new file.This includes executable PHP files that contain malicious code.

Weakness: CWE-434

Which versions are affected by CVE-2021-24220?

It affects 10 products.

Products include Thrivethemes Focusblog, Thrivethemes Ignition, Thrivethemes Luxe, Thrivethemes Minus, Thrivethemes Performag, Thrivethemes Pressive and 4 more.

How do I fix CVE-2021-24220?

No fix has been published for CVE-2021-24220 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-24220 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24220 exists.

Public exploit code: 1 Nuclei template.

CVE-2021-24219 All Thrive Themes and Plugins - Unauthenticated Option Update Medium 5.3

Sources

Also known as GHSA-pf3q-84pr-fv6p.