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Ubuntu 18.04 LTS / 20.04 LTS : PolicyKit vulnerability (USN-5252-1)

high Nessus Plugin ID 157112

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5252-1 advisory.

 It was discovered that the PolicyKit pkexec tool incorrectly handled command-line arguments. A local attacker could use this issue to escalate privileges to an administrator.

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-5252-1

Plugin Details

Severity: High

ID: 157112

File Name: ubuntu_USN-5252-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 1/26/2022

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2021-4034

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:gir1.2-polkit-1.0, cpe:/o:canonical:ubuntu_linux:20.04:-: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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/25/2022

Vulnerability Publication Date: 1/25/2022

CISA Known Exploited Vulnerability Due Dates: 7/18/2022

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Local Privilege Escalation in polkits pkexec)

Reference Information

CVE: CVE-2021-4034

IAVA: 2022-A-0055

USN: 5252-1