In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81
- https://usn.ubuntu.com/3903-2/
- https://access.redhat.com/errata/RHSA-2019:0230
- https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf
- https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html
- https://usn.ubuntu.com/3910-1/
- https://usn.ubuntu.com/3901-2/
- https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1692
- https://usn.ubuntu.com/3910-2/
- https://access.redhat.com/errata/RHSA-2019:0420
- https://usn.ubuntu.com/3908-2/
- https://usn.ubuntu.com/3901-1/
- https://usn.ubuntu.com/3903-1/
- http://www.securityfocus.com/bid/106537
- https://usn.ubuntu.com/3908-1/
- https://support.f5.com/csp/article/K22715344
- https://usn.ubuntu.com/3934-1/
- https://access.redhat.com/errata/RHSA-2019:0832
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html
- https://usn.ubuntu.com/3934-2/
- https://access.redhat.com/errata/RHSA-2019:2699
- https://access.redhat.com/errata/RHSA-2019:2978
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Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.