CVE-2018-6406 Memory corruption in n/a

High 8.8 Published 30 Jan 2018 Updated 17 Sep 2024

Remote attackers can trigger heap-based buffer over-reads and out-of-bounds writes in libwebm via crafted .webm files, causing information leaks or crashes.

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-2018-6406?

CVE-2018-6406 is a high-severity memory corruption vulnerability in n/a, published on 30 Jan 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

The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.

Weakness: CWE-125

Which versions are affected by CVE-2018-6406?

It affects 1 product.

Linux distribution packages (8)

`chromium` SUSE:Package Hub 12	All versions	`64.0.3282.140-49.1`
`chromium` SUSE:Package Hub 12	All versions	`64.0.3282.140-49.1`
`re2` SUSE:Package Hub 12	All versions	`20180201-8.1`
`re2` SUSE:Package Hub 12	All versions	`20180201-8.1`
`chromium` SUSE:Package Hub 12 SP2	All versions	`64.0.3282.140-49.1`
`chromium` SUSE:Package Hub 12 SP2	All versions	`64.0.3282.140-49.1`
`re2` SUSE:Package Hub 12 SP2	All versions	`20180201-8.1`
`re2` SUSE:Package Hub 12 SP2	All versions	`20180201-8.1`

Products include Webmproject Libwebm.

How do I fix CVE-2018-6406?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-6406 being exploited?

There is no known exploitation of CVE-2018-6406 in the wild and no public exploit code.

Sources

Also known as GHSA-929q-cjpr-43v5, UBUNTU-CVE-2018-6406, openSUSE-SU-2018:0359-1, openSUSE-SU-2018:0360-1.