Amazon Linux AMI : tar (ALAS-2023-1755)

high Nessus Plugin ID 176759


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


The version of tar installed on the remote host is prior to 1.26-31.24. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1755 advisory.

- pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers. (CVE-2019-9923)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Run 'yum update tar' to update your system.

See Also

Plugin Details

Severity: High

ID: 176759

File Name: ala_ALAS-2023-1755.nasl

Version: 1.0

Type: local

Agent: unix

Published: 6/6/2023

Updated: 6/6/2023

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

Risk Information


Risk Factor: Low

Score: 3.6


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-2019-9923


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:tar, p-cpe:/a:amazon:linux:tar-debuginfo, 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: 5/25/2023

Vulnerability Publication Date: 3/22/2019

Reference Information

CVE: CVE-2019-9923