A flaw was found in PolicyKit (aka polkit) 0.115 that allows a user with a uid greater than INT_MAX to successfully execute any systemctl command.
https://access.redhat.com/errata/RHSA-2019:2046
https://access.redhat.com/errata/RHSA-2019:3232
https://bugs.debian.org/915332
https://gitlab.freedesktop.org/polkit/polkit/issues/74
https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html
https://security.gentoo.org/glsa/201908-14
https://usn.ubuntu.com/3861-1/
Source: MITRE
Published: 2018-12-03
Updated: 2019-08-06
Type: CWE-20
Base Score: 9
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 8
Severity: HIGH
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8
Severity: HIGH