CVE-2020-6457 Use after free in Chrome

Critical 9.6 Published 21 May 2020 Updated 4 Aug 2024

A remote attacker can escape the sandbox and execute arbitrary code via a crafted HTML page exploiting a use-after-free in the speech recognizer.

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-2020-6457?

CVE-2020-6457 is a critical use after free vulnerability in Debian Debian Linux, published on 21 May 2020. 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 speech recognizer in Google Chrome prior to 81.0.4044.113 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

Weakness: CWE-416

Which versions are affected by CVE-2020-6457?

It affects 2 products.

Linux distribution packages (4)

`chromium-browser` Red Hat:rhel_extras:6	All versions	`0:81.0.4044.113-1.el6_10`
`chromium-browser-debuginfo` Red Hat:rhel_extras:6	All versions	`0:81.0.4044.113-1.el6_10`
`chromium` SUSE:Package Hub 15 SP1	All versions	`81.0.4044.113-bp151.3.70.1`
`chromium` openSUSE:Leap 15.1	All versions	`81.0.4044.113-lp151.2.80.1`

Products include Debian Debian Linux, Google Chrome.

How do I fix CVE-2020-6457?

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-2020-6457 being exploited?

There is no known exploitation of CVE-2020-6457 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2020-6457, GHSA-4gh8-r36v-mwv7, RHSA-2020:1504, UBUNTU-CVE-2020-6457, openSUSE-SU-2020:0541-1, openSUSE-SU-2020:0566-1.