Detections
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Amazon Linux AMI : busybox (ALAS-2021-1496)

high Nessus Plugin ID 149431

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Synopsis

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

Description

The version of busybox installed on the remote host is prior to 1.19.3-2.12. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1496 advisory.

 - decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data. (CVE-2021-28831)

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 busybox' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1496.html

https://access.redhat.com/security/cve/CVE-2021-28831

Plugin Details

Severity: High

ID: 149431

File Name: ala_ALAS-2021-1496.nasl

Version: 1.2

Type: local

Agent: unix

Published: 5/12/2021

Updated: 5/12/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-28831

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:busybox, p-cpe:/a:amazon:linux:busybox-petitboot, cpe:/o:amazon:linux

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/6/2021

Vulnerability Publication Date: 3/19/2021

Reference Information

CVE: CVE-2021-28831

ALAS: 2021-1496