CVE-2019-6133
Published: 11 January 2019
In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c.
From the Ubuntu Security Team
Jann Horn discovered a race condition in the fork() system call in the Linux kernel. A local attacker could use this to gain access to services that cache authorizations.
Notes
| Author | Note |
|---|---|
| mdeslaur | This issue is better fixed in the kernel, adding kernel packages to this CVE. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux-flo Launchpad, Ubuntu, Debian |
cosmic |
Does not exist
|
| disco |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| xenial |
Ignored
(abandoned)
|
|
| bionic |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Ignored
(end of life)
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(5.0~rc2)
|
| trusty |
Released
(4.4.0-1039.42)
|
|
| xenial |
Released
(4.4.0-1077.87)
|
|
| bionic |
Released
(4.15.0-1033.35)
|
|
| cosmic |
Released
(4.18.0-1011.13)
|
|
| disco |
Not vulnerable
(4.18.0-1011.13)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
upstream |
Released
(5.0~rc2)
|
| trusty |
Released
(4.15.0-1040.44~14.04.1)
|
|
| bionic |
Released
(4.18.0-1013.13~18.04.1)
|
|
| cosmic |
Released
(4.18.0-1013.13)
|
|
| disco |
Not vulnerable
(4.18.0-1013.13)
|
|
| xenial |
Released
(4.15.0-1040.44)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(5.0~rc2)
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.15.0-1033.35~16.04.1)
|
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1009.11)
|
| cosmic |
Released
(4.15.0-1009.11)
|
|
| disco |
Not vulnerable
(4.15.0-1009.11)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.15.0-1009.11~16.04.1)
|
|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-46.49)
|
| cosmic |
Released
(4.18.0-16.17)
|
|
| disco |
Not vulnerable
(4.19.0-12.13)
|
|
| trusty |
Released
(3.13.0-166.216)
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.4.0-143.169)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-1013.13~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.15.0-1040.44)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Ignored
(was needed ESM criteria)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1028.29)
|
| cosmic |
Released
(4.18.0-1007.8)
|
|
| disco |
Not vulnerable
(4.18.0-1007.8)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.15.0-1028.29~16.04.1)
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1028.29)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1030.32)
|
| disco |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1011.11~18.04.1)
|
| disco |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-16.17~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.15.0-46.49~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-15.16~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.15.0-46.49~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1030.30)
|
| cosmic |
Released
(4.18.0-1008.8)
|
|
| disco |
Not vulnerable
(4.18.0-1008.8)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.4.0-1041.47)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Ignored
(end of life, was ignored)
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Ignored
(end of life, was ignored)
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Ignored
(end of life, was ignored)
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Released
(4.4.0-143.169~14.04.2)
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1034.39)
|
| cosmic |
Released
(4.15.0-1034.39)
|
|
| disco |
Not vulnerable
(4.15.0-1034.39)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1032.34)
|
| cosmic |
Released
(4.18.0-1010.12)
|
|
| disco |
Not vulnerable
(4.18.0-1010.12)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.4.0-1104.112)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1053.57)
|
| cosmic |
Does not exist
|
|
| disco |
Not vulnerable
(5.0.0-1010.10)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.0~rc2)
|
|
| xenial |
Released
(4.4.0-1108.113)
|
|
|
policykit-1 Launchpad, Ubuntu, Debian |
bionic |
Released
(0.105-20ubuntu0.18.04.5)
|
| cosmic |
Released
(0.105-21ubuntu0.4)
|
|
| disco |
Released
(0.105-25)
|
|
| trusty |
Released
(0.105-4ubuntu3.14.04.6)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(0.105-14.1ubuntu0.5)
|
|
|
Patches: upstream: https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.7 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6133
- https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19
- https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf
- https://ubuntu.com/security/notices/USN-3901-1
- https://ubuntu.com/security/notices/USN-3901-2
- https://ubuntu.com/security/notices/USN-3903-1
- https://ubuntu.com/security/notices/USN-3903-2
- https://ubuntu.com/security/notices/USN-3908-1
- https://ubuntu.com/security/notices/USN-3908-2
- https://ubuntu.com/security/notices/USN-3910-1
- https://ubuntu.com/security/notices/USN-3910-2
- https://ubuntu.com/security/notices/USN-3934-1
- https://ubuntu.com/security/notices/USN-3934-2
- NVD
- Launchpad
- Debian