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CVE-2021-24973 Site Reviews < 5.17.3 - Unauthenticated Stored Cross-Site Scripting

Medium 6.1 Published Updated

Unauthenticated attackers can inject malicious scripts via the site-reviews parameter, leading to XSS attacks against logged-in administrators.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-24973?

CVE-2021-24973 is a medium-severity cross-site scripting vulnerability in Unknown Site Reviews, published on 3 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Site Reviews WordPress plugin before 5.17.3 does not sanitise and escape the site-reviews parameter of the glsr_action AJAX action (available to unauthenticated and any authenticated users), allowing them to perform Cross-Site Scripting attacks against logged in admins viewing the Tool dashboard of the plugin

Weakness: CWE-79

Which versions are affected by CVE-2021-24973?

It affects 1 product.

Products include Geminilabs Site Reviews.

How do I fix CVE-2021-24973?

No fix has been published for CVE-2021-24973 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-24973 being exploited?

There is no known exploitation of CVE-2021-24973 in the wild and no public exploit code.

Sources

Also known as GHSA-4p7m-87rg-hcph.

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