CVE-2019-6133

MEDIUM

polkit 0.115 - Race Condition via Fork-Based Authorization Bypass

Title source: llm
STIX 2.1

Description

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.

References (25)

Core 25
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3903-2/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0230
Patch, Third Party Advisory x_refsource_misc
https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3910-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3901-2/
Patch, Third Party Advisory x_refsource_misc
https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19
Issue Tracking, Mailing List, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/project-zero/issues/detail?id=1692
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3910-2/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0420
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3908-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3901-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3903-1/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/106537
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3908-1/
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K22715344
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3934-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0832
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3934-2/
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2699
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2978

Scores

CVSS v3 6.7
EPSS 0.0003
EPSS Percentile 7.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-362
Status published
Products (17)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
debian/debian_linux 8.0
polkit_project/polkit 0.115
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_desktop 6.0
redhat/enterprise_linux_server 7.0
... and 7 more
Published Jan 11, 2019
Tracked Since Feb 18, 2026