CVE-2018-8923 Cross-site scripting in File Station

Medium 6.5 Published 5 Jun 2018 Updated 16 Sep 2024

Authenticated attackers can inject malicious scripts via file attachments in Synology File Station, 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-2018-8923?

CVE-2018-8923 is a medium-severity cross-site scripting vulnerability in Synology File Station, published on 5 Jun 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

Cross-site scripting (XSS) vulnerability in Attachment Preview in Synology File Station before 1.1.4-0122 allows remote authenticated users to inject arbitrary web script or HTML via malicious attachments.

Weakness: CWE-79

Which versions are affected by CVE-2018-8923?

It affects 1 product.

Products include Synology File Station.

How do I fix CVE-2018-8923?

No fix has been published for CVE-2018-8923 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-2018-8923 being exploited?

There is no known exploitation of CVE-2018-8923 in the wild and no public exploit code.

Sources

Also known as GHSA-gv6f-6f67-8vrw.