CVE-2017-15890 Cross-site scripting in MailPlus Server

Medium 4.8 Published 15 Dec 2017 Updated 16 Sep 2024

Remote authenticated users can inject arbitrary web script or HTML via the NAME parameter in Synology MailPlus Server.

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

What is CVE-2017-15890?

CVE-2017-15890 is a medium-severity cross-site scripting vulnerability in Synology MailPlus Server, published on 15 Dec 2017. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in Disclaimer in Synology MailPlus Server before 1.4.0-0415 allows remote authenticated users to inject arbitrary web script or HTML via the NAME parameter.

Weakness: CWE-79

Which versions are affected by CVE-2017-15890?

It affects 1 product.

Products include Synology Mailplus Server.

How do I fix CVE-2017-15890?

No fix has been published for CVE-2017-15890 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-2017-15890 being exploited?

There is no known exploitation of CVE-2017-15890 in the wild and no public exploit code.

Sources

Also known as GHSA-rxvm-4jfj-965p.