CVE-2022-34471

2022-07-0500:00:00

ubuntu.com

add-on update

version verification

downgrade attack

firefox < 102

manifest tampering

server vulnerability

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

34.6%

JSON

When downloading an update for an addon, the downloaded addon update’s
version was not verified to match the version selected from the manifest.
If the manifest had been tampered with on the server, an attacker could
trick the browser into downgrading the addon to a prior version. This
vulnerability affects Firefox < 102.

Notes

Author	Note
mdeslaur	starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 102.0+build2-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 102.0+build2-0ubuntu0.20.04.1UNKNOWN
ubuntu21.10noarchfirefox< 102.0+build2-0ubuntu0.21.10.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	firefox	< 102.0+build2-0ubuntu0.18.04.1	UNKNOWN
ubuntu	20.04	noarch	firefox	< 102.0+build2-0ubuntu0.20.04.1	UNKNOWN
ubuntu	21.10	noarch	firefox	< 102.0+build2-0ubuntu0.21.10.1	UNKNOWN