Detections
Analytics

Amazon Linux 2 : flatpak (ALAS-2021-1597)

high Nessus Plugin ID 146624

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Synopsis

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

Description

The version of flatpak installed on the remote host is prior to 1.0.9-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1597 advisory.

 A flaw was found in Flatpak. The Flatpak portal D-Bus service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is outside the sandbox. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-21261)

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 flatpak' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1597.html

https://access.redhat.com/security/cve/CVE-2021-21261

Plugin Details

Severity: High

ID: 146624

File Name: al2_ALAS-2021-1597.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/19/2021

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-21261

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:flatpak, p-cpe:/a:amazon:linux:flatpak-libs, p-cpe:/a:amazon:linux:flatpak-debuginfo, p-cpe:/a:amazon:linux:flatpak-devel, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:flatpak-builder

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/17/2021

Vulnerability Publication Date: 1/14/2021

Reference Information

CVE: CVE-2021-21261

ALAS: 2021-1597