Debian DLA-1644-1 : policykit-1 security update

high Nessus Plugin ID 121423
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The remote Debian host is missing a security update.


Two vulnerabilities were found in Policykit, a framework for managing administrative policies and privileges :


It was discovered that incorrect processing of very high UIDs in Policykit could result in authentication bypass.


Jann Horn of Google found that Policykit doesn't properly check if a process is already authenticated, which can lead to an authentication reuse by a different user.

For Debian 8 'Jessie', these problems have been fixed in version 0.105-15~deb8u4.

We recommend that you upgrade your policykit-1 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 121423

File Name: debian_DLA-1644.nasl

Version: 1.6

Type: local

Agent: unix

Published: 1/29/2019

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:gir1.2-polkit-1.0, p-cpe:/a:debian:debian_linux:libpolkit-agent-1-0, p-cpe:/a:debian:debian_linux:libpolkit-agent-1-dev, p-cpe:/a:debian:debian_linux:libpolkit-backend-1-0, p-cpe:/a:debian:debian_linux:libpolkit-backend-1-dev, p-cpe:/a:debian:debian_linux:libpolkit-gobject-1-0, p-cpe:/a:debian:debian_linux:libpolkit-gobject-1-dev, p-cpe:/a:debian:debian_linux:policykit-1, p-cpe:/a:debian:debian_linux:policykit-1-doc, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/28/2019

Vulnerability Publication Date: 12/3/2018

Reference Information

CVE: CVE-2018-19788, CVE-2019-6133