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.

The ncurses package (tic) is susceptible to a heap overflow on crafted input. When the terminfo entry- description compiler processes input, proper bounds checking was not enforced leading to this software flaw. The highest threat from this vulnerability is system availability. (CVE-2021-39537)

A segmentation fault vulnerability was found in ncurses's convert_strings() function of tinfo/read_entry.c file. This flaw occurs due to corrupted terminfo data, triggering an out-of-bounds read error.
(CVE-2022-29458)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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.

Plugin Details

Severity: High

ID: 168462

File Name: al2_ALAS-2022-1893.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 12/7/2022

Updated: 12/11/2024

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: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

Detections

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