CVE-2018-18373 Cross-site scripting in n/a

Medium 5.4 Published Updated

Stored XSS in the Support Board plugin allows attackers to inject malicious scripts via the message parameter, potentially compromising user sessions.

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

What is CVE-2018-18373?

CVE-2018-18373 is a medium-severity cross-site scripting vulnerability in n/a, published on 17 Oct 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

In the Schiocco "Support Board - Chat And Help Desk" plugin 1.2.3 for WordPress, a Stored XSS vulnerability has been discovered in file upload areas in the Chat and Help Desk sections via the msg parameter in a /wp-admin/admin-ajax.php sb_ajax_add_message action.

Weakness: CWE-79

Which versions are affected by CVE-2018-18373?

It affects 1 product.

Products include Schiocco Support Board - Chat and Help Desk.

How do I fix CVE-2018-18373?

No fix has been published for CVE-2018-18373 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-2018-18373 being exploited?

There is no known exploitation of CVE-2018-18373 in the wild and no public exploit code.

Sources

Also known as GHSA-rjxw-rrmr-pgg7.

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