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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : PackageKit vulnerabilities (USN-4538-1)

high Nessus Plugin ID 183597

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4538-1 advisory.

 - PackageKit provided detailed error messages to unprivileged callers that exposed information about file presence and mimetype of files that the user would be unable to determine on its own. (CVE-2020-16121)

 - PackageKit's apt backend mistakenly treated all local debs as trusted. The apt security model is based on repository trust and not on the contents of individual files. On sites with configured PolicyKit rules this may allow users to install malicious packages. (CVE-2020-16122)

Note that Nessus has not tested for these issues 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-4538-1

Plugin Details

Severity: High

ID: 183597

File Name: ubuntu_USN-4538-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 10/20/2023

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2020-16122

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gir1.2-packagekitglib-1.0, p-cpe:/a:canonical:ubuntu_linux:gstreamer1.0-packagekit, p-cpe:/a:canonical:ubuntu_linux:libpackagekit-glib2-16, p-cpe:/a:canonical:ubuntu_linux:libpackagekit-glib2-18, p-cpe:/a:canonical:ubuntu_linux:libpackagekit-glib2-dev, p-cpe:/a:canonical:ubuntu_linux:packagekit, p-cpe:/a:canonical:ubuntu_linux:packagekit-backend-aptcc, p-cpe:/a:canonical:ubuntu_linux:packagekit-backend-smart, p-cpe:/a:canonical:ubuntu_linux:packagekit-command-not-found, p-cpe:/a:canonical:ubuntu_linux:packagekit-gtk3-module, p-cpe:/a:canonical:ubuntu_linux:packagekit-tools, p-cpe:/a:canonical:ubuntu_linux:python3-packagekit

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/24/2020

Vulnerability Publication Date: 11/7/2020

Reference Information

CVE: CVE-2020-16121, CVE-2020-16122

USN: 4538-1