CVE-2018-6548

Publication date 2 February 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.

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
	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
	16.04 LTS xenial	Ignored
	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	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H