CVE-2018-17021 Cross-site scripting in n/a

Medium 6.1 Published 13 Sep 2018 Updated 16 Sep 2024

Remote attackers can inject arbitrary web script or HTML into ASUS GT-AC5300 routers via the appGet.cgi hook parameter.

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-2018-17021?

CVE-2018-17021 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Sep 2018. 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

Cross-site scripting (XSS) vulnerability on ASUS GT-AC5300 devices with firmware through 3.0.0.4.384_32738 allows remote attackers to inject arbitrary web script or HTML via the appGet.cgi hook parameter.

Weakness: CWE-79

Which versions are affected by CVE-2018-17021?

It affects 1 product.

Products include Asus Gt-Ac5300 Firmware.

How do I fix CVE-2018-17021?

No fix has been published for CVE-2018-17021 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-2018-17021 being exploited?

There is no known exploitation of CVE-2018-17021 in the wild and no public exploit code.

Sources

Also known as GHSA-4j7m-wpc7-pfpx.