medium
6.7
CWE
362
Advisory Published
CVE Published
Updated

CVE-2019-6133: Race Condition

First published: Tue Jan 08 2019(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Ubuntu Polkit Daemon=0.115
Debian GNU/Linux=8.0
redhat enterprise Linux desktop=7.0
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=7.6
redhat enterprise Linux server eus=7.6
redhat enterprise Linux server tus=7.6
redhat enterprise Linux workstation=7.0
redhat enterprise Linux desktop=6.0
redhat enterprise Linux server=6.0
redhat enterprise Linux server aus=6.6
redhat enterprise Linux workstation=6.0
Ubuntu Linux=12.04
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=18.10
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1
debian/policykit-1
0.105-31+deb11u1
122-3
126-2
Debian=8.0
Ubuntu=12.04
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=18.10

Remedy

https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf

Remedy

https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81

Remedy

https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-6133?

    CVE-2019-6133 has been rated as a high severity vulnerability due to its potential to bypass authorization mechanisms.

  • How do I fix CVE-2019-6133?

    To fix CVE-2019-6133, update to the patched versions of PolicyKit or Linux packages that address this vulnerability.

  • What systems are affected by CVE-2019-6133?

    CVE-2019-6133 affects various Linux distributions using PolicyKit version 0.115 and specific Linux kernel versions.

  • What type of vulnerability is CVE-2019-6133?

    CVE-2019-6133 is an authorization bypass vulnerability that exploits race conditions in the PolicyKit framework.

  • Is CVE-2019-6133 exploitable remotely?

    CVE-2019-6133 is primarily a local privilege escalation vulnerability and is not typically exploitable remotely.

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