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Amazon Linux 2 : polkit (ALAS-2020-1437)

medium Nessus Plugin ID 137568

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of polkit installed on the remote host is prior to 0.112-26. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2020-1437 advisory.

 A flaw was found in polkit before version 0.116. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure. (CVE-2018-1116)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update polkit' to update your system.

See Also

https://access.redhat.com/security/cve/CVE-2018-1116

https://alas.aws.amazon.com/AL2/ALAS-2020-1437.html

Plugin Details

Severity: Medium

ID: 137568

File Name: al2_ALAS-2020-1437.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/18/2020

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

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

CVSS Score Source: CVE-2018-1116

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.9

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:polkit, p-cpe:/a:amazon:linux:polkit-docs, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:polkit-debuginfo, p-cpe:/a:amazon:linux:polkit-devel

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2020

Vulnerability Publication Date: 7/10/2018

Reference Information

CVE: CVE-2018-1116

ALAS: 2020-1437