CVE-2019-6133
Moderate
CVE-2019-6133
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.
Exploit probability
0.4%
Published
January 11, 2019
Required by
Not available
Last source change
August 20, 2026
02 / AFFECTED SOFTWARE
Affected packages
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2019-6133
View original source
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.
05 / REFERENCES
Further evidence
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html
- http://www.securityfocus.com/bid/106537
- https://access.redhat.com/errata/RHSA-2019:0230
- https://access.redhat.com/errata/RHSA-2019:0420
- https://access.redhat.com/errata/RHSA-2019:0832
- https://access.redhat.com/errata/RHSA-2019:2699
- https://access.redhat.com/errata/RHSA-2019:2978
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1692
- https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf
- https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81
- https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19
- https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
- https://support.f5.com/csp/article/K22715344
- https://usn.ubuntu.com/3901-1/
- https://usn.ubuntu.com/3901-2/
- https://usn.ubuntu.com/3903-1/
- https://usn.ubuntu.com/3903-2/
- https://usn.ubuntu.com/3908-1/
- https://usn.ubuntu.com/3908-2/
- https://usn.ubuntu.com/3910-1/
- https://usn.ubuntu.com/3910-2/
- https://usn.ubuntu.com/3934-1/
- https://usn.ubuntu.com/3934-2/