CVE-2019-6133 json
In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authoriz…
published 2019-01-11 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15700
- cvss
- 6.7
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- linux Debian 14, Debian 13, Debian 12 4.19.16-1
- policykit-1 Debian 14, Debian 13, Debian 12 0.105-25
debian advisories DEBIAN-CVE-2019-6133
- linux Ubuntu 14.04 LTS 3.13.0-166.216
- linux Ubuntu 16.04 LTS 4.4.0-143.169
- linux Ubuntu 18.04 LTS 4.15.0-46.49
- linux-aws Ubuntu 14.04 LTS 4.4.0-1039.42
- linux-aws Ubuntu 16.04 LTS 4.4.0-1077.87
- linux-aws Ubuntu 18.04 LTS 4.15.0-1033.35
- linux-gcp Ubuntu 16.04 LTS 4.15.0-1028.29~16.04.1
- linux-gcp Ubuntu 18.04 LTS 4.15.0-1028.29
ubuntu advisories UBUNTU-CVE-2019-6133
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- polkit RHEL 6 0.96-11.el6_10.1
- polkit-desktop-policy RHEL 6 0.96-11.el6_10.1
- polkit RHEL 7 0.112-18.el7_6.1
- polkit RHEL 7.5 EUS 0.112-14.el7_5.1
- polkit RHEL 7.4 EUS 0.112-12.el7_4.1
- polkit RHEL 6.6 AUS 0.96-7.el6_6.1
- polkit-desktop-policy RHEL 6.6 AUS 0.96-7.el6_6.1
red hat advisories RHSA-2019:2978RHSA-2019:2699RHSA-2019:0832RHSA-2019:0420RHSA-2019:0230
- kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.149.1
- kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.149.1
- kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.149.1
- kgraft-patch-SLE12-SP2_Update_39 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 1-3.3.1
- kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.135.1
- kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.135.1
- kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +5 more 4.4.180-94.135.1
- kgraft-patch-SLE12-SP3_Update_36 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +3 more 1-4.5.1
suse advisories SUSE-SU-2021:0437-1SUSE-SU-2020:3503-1SUSE-SU-2019:2035-1SUSE-SU-2019:2035-2SUSE-SU-2019:2018-1
- polkit openSUSE Tumbleweed 0.118-7.2
- polkit openSUSE Leap 15.1, openSUSE Leap 15.0 0.114-lp151.5.3.1
opensuse advisories openSUSE-SU-2024:11180-1openSUSE-SU-2019:1914-1
- polkit Alpine 3.7 0.105-r10
- polkit Alpine 3.9, Alpine 3.8 0.105-r11
alpine advisories ALPINE-CVE-2019-6133
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- polkit Arch Linux 0.116-1
arch linux advisories AVG-897
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2019-6133 updated cvss 7.3
polkit: Temporary auth hijacking via PID reuse and non-atomic fork
-
Red Hat Virtualization 4 rhvm-applianceaffected: no fix planned “Will not fix”
-
Red Hat Enterprise Linux Client (v. 7) polkit 0.112-18.el7_6.1 Red Hat Enterprise Linux Client Optional (v. 7) polkit-docs 0.112-18.el7_6.1, polkit-devel 0.112-18.el7_6.1, polkit-debuginfo 0.112-18.el7_6.1 Red Hat Enterprise Linux ComputeNode (v. 7) polkit 0.112-18.el7_6.1fixed: vendor fix RHSA-2019:0230
-
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) polkit 0.112-12.el7_4.1fixed: vendor fix RHSA-2019:2699
-
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) polkit 0.112-14.el7_5.1fixed: vendor fix RHSA-2019:2978
-
Red Hat Enterprise Linux ComputeNode Optional (v. 7) polkit-docs 0.112-18.el7_6.1, polkit-devel 0.112-18.el7_6.1, polkit-debuginfo 0.112-18.el7_6.1fixed: vendor fix RHSA-2019:0230
-
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) polkit-docs 0.112-12.el7_4.1, polkit-devel 0.112-12.el7_4.1, polkit-debuginfo 0.112-12.el7_4.1fixed: vendor fix RHSA-2019:2699
-
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) polkit-docs 0.112-14.el7_5.1, polkit-devel 0.112-14.el7_5.1, polkit-debuginfo 0.112-14.el7_5.1fixed: vendor fix RHSA-2019:2978
-
Red Hat Enterprise Linux Desktop (v. 6) polkit 0.96-11.el6_10.1, polkit-desktop-policy 0.96-11.el6_10.1 Red Hat Enterprise Linux Desktop Optional (v. 6) polkit-docs 0.96-11.el6_10.1, polkit-devel 0.96-11.el6_10.1, polkit-debuginfo 0.96-11.el6_10.1fixed: vendor fix RHSA-2019:0420
show 9 moreshow fewer
-
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) polkit 0.112-18.el7_6.1fixed: vendor fix RHSA-2019:0230
-
Red Hat Enterprise Linux HPC Node (v. 6) polkit 0.96-11.el6_10.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) polkit-desktop-policy 0.96-11.el6_10.1 Red Hat Enterprise Linux Server (v. 6) polkit 0.96-11.el6_10.1, polkit-desktop-policy 0.96-11.el6_10.1fixed: vendor fix RHSA-2019:0420
-
Red Hat Enterprise Linux Server (v. 7) polkit 0.112-18.el7_6.1fixed: vendor fix RHSA-2019:0230
-
Red Hat Enterprise Linux Server AUS (v. 6.6) polkit 0.96-7.el6_6.1, polkit-desktop-policy 0.96-7.el6_6.1fixed: vendor fix RHSA-2019:0832
-
Red Hat Enterprise Linux Server EUS (v. 7.4) polkit 0.112-12.el7_4.1fixed: vendor fix RHSA-2019:2699
-
Red Hat Enterprise Linux Server EUS (v. 7.5) polkit 0.112-14.el7_5.1fixed: vendor fix RHSA-2019:2978
-
Red Hat Enterprise Linux Workstation (v. 6) polkit 0.96-11.el6_10.1, polkit-desktop-policy 0.96-11.el6_10.1fixed: vendor fix RHSA-2019:0420
-
Red Hat Enterprise Linux Workstation (v. 7) polkit 0.112-18.el7_6.1fixed: vendor fix RHSA-2019:0230
-
Red Hat Enterprise Linux 8 polkit, polkit-libsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.7 | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
gitlab.freedesktop.org
/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81
patch, third-party-advisory
-
git.kernel.org
/linus/7b55851367136b1efd84d98fea81ba57a98304cf
patch, third-party-advisory
-
gitlab.freedesktop.org
/polkit/polkit/merge_requests/19
patch, third-party-advisory
-
usn.ubuntu.com
/3903-2/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:0230
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3910-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3901-2/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3910-2/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:0420
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3908-2/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3901-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3903-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3908-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3934-1/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:0832
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-08/msg00049.html
vendor-advisory
-
usn.ubuntu.com
/3934-2/
vendor-advisory
-
access.redhat.com
/errata/RHSA-2019:2699
vendor-advisory
-
access.redhat.com
/errata/RHSA-2019:2978
vendor-advisory
-
lists.debian.org
/debian-lts-announce/2019/01/msg00021.html
mailing-list, third-party-advisory
-
bugs.chromium.org
/p/project-zero/issues/detail?id=1692
issue-tracking, mailing-list, third-party-advisory
-
securityfocus.com
/bid/106537
vdb-entry, third-party-advisory
-
support.f5.com
/csp/article/K22715344
third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/05/msg00041.html
mailing-list
-
lists.debian.org
/debian-lts-announce/2019/05/msg00042.html
mailing-list
Sources
- CVE List CVE-2019-6133
- NVD CVE-2019-6133
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.