CVE-2019-6133

polkit: Temporary auth hijacking via PID reuse and non-atomic fork

Published Jan 11, 2019 CVSS 3.0 · 6.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-1644-1 policykit-1 security update
Debian DLA Debian DLA DLA-1799-1 linux security update
Debian DLA Debian DLA DLA-1799-2 linux security update
EUVD EUVD EUVD-2019-15700 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.
Ubuntu USN Ubuntu USN USN-3901-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3901-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3903-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3903-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3908-1 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-3908-2 Linux kernel (Trusty HWE) vulnerability
Ubuntu USN Ubuntu USN USN-3910-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3910-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3934-1 PolicyKit vulnerability
Ubuntu USN Ubuntu USN USN-3934-2 PolicyKit vulnerability
History

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