CVE-2022-28281

Published: 6 April 2022

If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Priority

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	focal	Released (99.0+build2-0ubuntu0.20.04.2)
	impish	Released (99.0+build2-0ubuntu0.21.10.2)
	jammy	Released (1:1snap1-0ubuntu1)
	kinetic	Released (1:1snap1-0ubuntu1)
	lunar	Released (1:1snap1-0ubuntu1)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Ignored (end of standard support)
	bionic	Released (99.0+build2-0ubuntu0.18.04.2)
thunderbird Launchpad, Ubuntu, Debian	kinetic	Not vulnerable (1:91.8.0+build2-0ubuntu1)
	lunar	Not vulnerable (1:91.8.0+build2-0ubuntu1)
	trusty	Does not exist
	upstream	Released (91.8)
	xenial	Ignored (end of standard support)
	bionic	Released (1:91.8.1+build1-0ubuntu0.18.04.1)
	focal	Released (1:91.8.1+build1-0ubuntu0.20.04.1)
	impish	Released (1:91.8.1+build1-0ubuntu0.21.10.1)
	jammy	Not vulnerable (1:91.8.0+build2-0ubuntu1)

Severity score breakdown

Parameter	Value
Base score	8.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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