CVE-2019-8764 Cross-site scripting in watchOS

Medium 6.1 Published 18 Dec 2019 Updated 4 Aug 2024

Attackers can execute arbitrary scripts in the context of the user's browser via malicious web content on watchOS.

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: Available

What is CVE-2019-8764?

CVE-2019-8764 is a medium-severity cross-site scripting vulnerability in Apple Watchos, published on 18 Dec 2019. 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

A logic issue was addressed with improved state management. This issue is fixed in watchOS 6.1. Processing maliciously crafted web content may lead to universal cross site scripting.

Weakness: CWE-79

Which versions are affected by CVE-2019-8764?

It affects 2 products.

Products include Apple Watchos, Webkitgtk Webkitgtk\+.

How do I fix CVE-2019-8764?

Upgrade to a fixed version.

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-2019-8764 being exploited?

There is no known exploitation of CVE-2019-8764 in the wild and no public exploit code.

All Apple Watchos vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-8764, GHSA-8g88-79gg-9jfg, UBUNTU-CVE-2019-8764.