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Amazon Linux 2 : ncurses (ALAS-2023-2096)

high Nessus Plugin ID 177881

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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 a vulnerability as referenced in the ALAS2-2023-2096 advisory.

 - ncurses before 6.4 20230408, when used by a setuid application, allows local users to trigger security- relevant memory corruption via malformed data in a terminfo database file that is found in $HOME/.terminfo or reached via the TERMINFO or TERM environment variable. (CVE-2023-29491)

Note that Nessus has not tested for this issue 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-2023-2096.html

https://alas.aws.amazon.com/cve/html/CVE-2023-29491.html

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

Plugin Details

Severity: High

ID: 177881

File Name: al2_ALAS-2023-2096.nasl

Version: 1.3

Type: local

Agent: unix

Published: 7/1/2023

Updated: 11/8/2023

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, 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:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-29491

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/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: 6/21/2023

Vulnerability Publication Date: 4/14/2023

Reference Information

CVE: CVE-2023-29491