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Amazon Linux 2 : ncurses (ALAS-2022-1893)

high Nessus Plugin ID 168462

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Synopsis

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

Description

The version of ncurses installed on the remote host is prior to 6.0-8.20170212. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1893 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.

Solution

Run 'yum update ncurses' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2022-1893.html

https://alas.aws.amazon.com/cve/html/CVE-2021-39537.html

https://alas.aws.amazon.com/cve/html/CVE-2022-29458.html

Plugin Details

Severity: High

ID: 168462

File Name: al2_ALAS-2022-1893.nasl

Version: 1.3

Type: local

Agent: unix

Published: 12/7/2022

Updated: 9/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

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

CVSS v3

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

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: 12/1/2022

Vulnerability Publication Date: 9/20/2021

Reference Information

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