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Amazon Linux 2023 : libtirpc, libtirpc-devel (ALAS2023-2025-890)

high Nessus Plugin ID 232282

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-890 advisory.

 In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections. (CVE-2021-46828)

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 'dnf update libtirpc --releasever 2023.6.20250303' to update your system.

See Also

https://alas.aws.amazon.com/AL2023/ALAS-2025-890.html

https://alas.aws.amazon.com/cve/html/CVE-2021-46828.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 232282

File Name: al2023_ALAS2023-2025-890.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/7/2025

Updated: 3/7/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2021-46828

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:libtirpc, p-cpe:/a:amazon:linux:libtirpc-debuginfo, p-cpe:/a:amazon:linux:libtirpc-devel, p-cpe:/a:amazon:linux:libtirpc-debugsource, cpe:/o:amazon:linux:2023

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/27/2025

Vulnerability Publication Date: 7/20/2022

Reference Information

CVE: CVE-2021-46828