CVE-2018-6406

Publication date 30 January 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
chromium-browser	18.10 cosmic	Ignored
	18.04 LTS bionic	Ignored
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Not in release
oxide-qt	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Not in release

Notes

mdeslaur

marking chromium-browser as ignored as we do full-version upgrades and we rely on upstream's bundled libwebm

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H