Amazon Linux 2 : libsndfile (ALAS-2023-1998)

high Nessus Plugin ID 173237


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


The version of libsndfile installed on the remote host is prior to 1.0.25-12. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-1998 advisory.

- An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws. (CVE-2021-4156)

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 libsndfile' to update your system.

See Also

Plugin Details

Severity: High

ID: 173237

File Name: al2_ALAS-2023-1998.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/22/2023

Updated: 4/20/2023

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

Risk Information


Risk Factor: Medium

Score: 5.0


Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2021-4156


Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libsndfile, p-cpe:/a:amazon:linux:libsndfile-debuginfo, p-cpe:/a:amazon:linux:libsndfile-devel, p-cpe:/a:amazon:linux:libsndfile-utils, cpe:/o:amazon:linux:2

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/17/2023

Vulnerability Publication Date: 3/23/2022

Reference Information

CVE: CVE-2021-4156