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Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : PolicyKit vulnerability (USN-3934-1)

medium Nessus Plugin ID 123750

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-3934-1 advisory.

 It was discovered that PolicyKit incorrectly relied on the fork() system call in the Linux kernel being atomic. A local attacker could possibly use this issue to gain access to services that have cached authorizations.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-3934-1

Plugin Details

Severity: Medium

ID: 123750

File Name: ubuntu_USN-3934-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 4/4/2019

Updated: 8/27/2024

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2019-6133

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gir1.2-polkit-1.0, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libpolkit-gobject-1-0, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libpolkit-agent-1-dev, p-cpe:/a:canonical:ubuntu_linux:libpolkit-agent-1-0, p-cpe:/a:canonical:ubuntu_linux:libpolkit-backend-1-0, p-cpe:/a:canonical:ubuntu_linux:libpolkit-gobject-1-dev, p-cpe:/a:canonical:ubuntu_linux:policykit-1, p-cpe:/a:canonical:ubuntu_linux:libpolkit-backend-1-dev

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/3/2019

Vulnerability Publication Date: 1/11/2019

Reference Information

CVE: CVE-2019-6133

USN: 3934-1