CVE-2022-3328
Published: 30 November 2022
Race condition in snap-confine's must_mkdir_and_open_with_perms()
From the Ubuntu Security Team
The Qualys Research Team discovered that a race condition existed in the snapd snap-confine binary when preparing the private /tmp mount for a snap. A local attacker could possibly use this issue to escalate privileges and execute arbitrary code.
Notes
Author | Note |
---|---|
alexmurray |
vuln introduced as part of the fix for CVE-2021-44731 - as such affects upstream versions 2.54.3 to 2.57.5 |
Priority
Status
Package | Release | Status |
---|---|---|
snapd
Launchpad, Ubuntu, Debian |
bionic |
Released
(2.57.5+18.04ubuntu0.1)
|
focal |
Released
(2.57.5+20.04ubuntu0.1)
|
|
jammy |
Released
(2.57.5+22.04ubuntu0.1)
|
|
kinetic |
Released
(2.57.5+22.10ubuntu0.1)
|
|
lunar |
Not vulnerable
(2.58.2+23.04)
|
|
mantic |
Not vulnerable
(2.58.2+23.04)
|
|
noble |
Not vulnerable
(2.58.2+23.04)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Released
(2.61.1)
|
|
xenial |
Released
(2.54.3+16.04.0ubuntu0.1~esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | High |
Privileges required | Low |
User interaction | None |
Scope | Changed |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |