Race Condition Affecting polkit package, versions <0.105-r11
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE38-POLKIT-458284
- published11 Jan 2019
- disclosed11 Jan 2019
Introduced: 11 Jan 2019
CVE-2019-6133 (opens in a new tab)How to fix?
Upgrade Alpine:3.8 polkit to version 0.105-r11 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream polkit package and not the polkit package as distributed by Alpine.
See How to fix? for Alpine:3.8 relevant fixed versions and status.
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
- https://support.f5.com/csp/article/K22715344
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6133
- 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://security-tracker.debian.org/tracker/CVE-2019-6133
- 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://access.redhat.com/errata/RHSA-2019:2699
- https://access.redhat.com/errata/RHSA-2019:2978
- https://access.redhat.com/errata/RHSA-2019:0230
- https://access.redhat.com/errata/RHSA-2019:0420
- https://access.redhat.com/errata/RHSA-2019:0832
- http://www.securityfocus.com/bid/106537
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html
- https://usn.ubuntu.com/3934-2/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-6133
- 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/