Amazon Linux 2023 : ncurses, ncurses-base, ncurses-c++-libs (ALAS2023-2023-023)

high Nessus Plugin ID 173173


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


It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-023 advisory.

- An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer overflow. (CVE-2021-39537)

- ncurses 6.3 before patch 20220416 has an out-of-bounds read and segmentation violation in convert_strings in tinfo/read_entry.c in the terminfo library. (CVE-2022-29458)

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


Run 'dnf update ncurses --releasever=2023.0.20230222 ' to update your system.

See Also

Plugin Details

Severity: High

ID: 173173

File Name: al2023_ALAS2023-2023-023.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/21/2023

Updated: 4/20/2023

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

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-39537


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:ncurses, p-cpe:/a:amazon:linux:ncurses-base, p-cpe:/a:amazon:linux:ncurses-c%2b%2b-libs, p-cpe:/a:amazon:linux:ncurses-c%2b%2b-libs-debuginfo, p-cpe:/a:amazon:linux:ncurses-compat-libs, p-cpe:/a:amazon:linux:ncurses-compat-libs-debuginfo, p-cpe:/a:amazon:linux:ncurses-debuginfo, p-cpe:/a:amazon:linux:ncurses-debugsource, p-cpe:/a:amazon:linux:ncurses-devel, p-cpe:/a:amazon:linux:ncurses-libs, p-cpe:/a:amazon:linux:ncurses-libs-debuginfo, p-cpe:/a:amazon:linux:ncurses-static, p-cpe:/a:amazon:linux:ncurses-term, cpe:/o:amazon:linux:2023

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: 2/17/2023

Vulnerability Publication Date: 9/20/2021

Reference Information

CVE: CVE-2021-39537, CVE-2022-29458