CVE-2018-20370 Cross-site scripting in n/a

Medium 5.4 Published Updated

Attackers can inject malicious scripts via the MyName field in SZ NetChat, potentially compromising the HTTP server frontend and user accounts.

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-2018-20370?

CVE-2018-20370 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Dec 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

SZ NetChat before 7.9 has XSS in the MyName input field of the Options module. Attackers are able to inject commands to compromise the enabled HTTP server web frontend.

Weakness: CWE-79

Which versions are affected by CVE-2018-20370?

It affects 1 product.

Products include The-Sz Netchat.

How do I fix CVE-2018-20370?

No fix has been published for CVE-2018-20370 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-2018-20370 being exploited?

There is no known exploitation of CVE-2018-20370 in the wild and no public exploit code.

Sources

Also known as GHSA-2h3w-869c-mmjh.

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