CVE-2022-40958

2022-09-2800:00:00

ubuntu.com

cookie injection

shared subdomain

secure context

session fixation

vulnerability

firefox esr

thunderbird

firefox

6.5 Medium

CVSS3

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

0.001 Low

EPSS

Percentile

43.6%

JSON

By injecting a cookie with certain special characters, an attacker on a
shared subdomain which is not a secure context could set and thus overwrite
cookies from a secure context, leading to session fixation and other
attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird <
102.3, and Firefox < 105.

Notes

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

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 105.0+build2-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 105.0+build2-0ubuntu0.20.04.1UNKNOWN
ubuntu18.04noarchthunderbird< 1:102.4.2+build2-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchthunderbird< 1:102.4.2+build2-0ubuntu0.20.04.1UNKNOWN
ubuntu22.04noarchthunderbird< 1:102.4.2+build2-0ubuntu0.22.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	firefox	< 105.0+build2-0ubuntu0.18.04.1	UNKNOWN
ubuntu	20.04	noarch	firefox	< 105.0+build2-0ubuntu0.20.04.1	UNKNOWN
ubuntu	18.04	noarch	thunderbird	< 1:102.4.2+build2-0ubuntu0.18.04.1	UNKNOWN
ubuntu	20.04	noarch	thunderbird	< 1:102.4.2+build2-0ubuntu0.20.04.1	UNKNOWN
ubuntu	22.04	noarch	thunderbird	< 1:102.4.2+build2-0ubuntu0.22.04.1	UNKNOWN