CVE-2019-5842 Use after free in Chrome

Medium 6.5 Published 25 Nov 2019 Updated 4 Aug 2024

A remote attacker can exploit heap corruption via a crafted HTML page due to a use-after-free in Blink, potentially executing arbitrary code.

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-2019-5842?

CVE-2019-5842 is a medium-severity use after free vulnerability in Google Chrome, published on 25 Nov 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

Use after free in Blink in Google Chrome prior to 75.0.3770.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Weakness: CWE-787, CWE-416

Which versions are affected by CVE-2019-5842?

It affects 1 product.

Linux distribution packages (2)

`chromium-browser` Red Hat:rhel_extras:6	All versions	`0:75.0.3770.90-1.el6_10`
`chromium-browser-debuginfo` Red Hat:rhel_extras:6	All versions	`0:75.0.3770.90-1.el6_10`

Products include Google Chrome.

How do I fix CVE-2019-5842?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-5842 being exploited?

There is no known exploitation of CVE-2019-5842 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-5842, GHSA-98rw-w9v5-5j4m, RHSA-2019:1553, UBUNTU-CVE-2019-5842.