Amazon Linux 2022 : (ALAS2022-2022-085)

critical Nessus Plugin ID 164698

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Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-085 advisory.

- In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
(CVE-2021-21708)

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 --releasever=2022.0.20220518 php' to update your system.

Plugin Details

Severity: Critical

ID: 164698

File Name: al2022_ALAS2022-2022-085.nasl

Version: 1.3

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 9/6/2022

Updated: 10/13/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-21708

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:php-bcmath, p-cpe:/a:amazon:linux:php-bcmath-debuginfo, p-cpe:/a:amazon:linux:php-cli, p-cpe:/a:amazon:linux:php-cli-debuginfo, p-cpe:/a:amazon:linux:php-common, p-cpe:/a:amazon:linux:php-common-debuginfo, p-cpe:/a:amazon:linux:php, p-cpe:/a:amazon:linux:php-dba, p-cpe:/a:amazon:linux:php-dba-debuginfo, p-cpe:/a:amazon:linux:php-dbg, p-cpe:/a:amazon:linux:php-dbg-debuginfo, p-cpe:/a:amazon:linux:php-debuginfo, p-cpe:/a:amazon:linux:php-debugsource, p-cpe:/a:amazon:linux:php-devel, p-cpe:/a:amazon:linux:php-embedded, p-cpe:/a:amazon:linux:php-embedded-debuginfo, p-cpe:/a:amazon:linux:php-enchant, p-cpe:/a:amazon:linux:php-enchant-debuginfo, p-cpe:/a:amazon:linux:php-ffi, p-cpe:/a:amazon:linux:php-ffi-debuginfo, p-cpe:/a:amazon:linux:php-fpm, p-cpe:/a:amazon:linux:php-fpm-debuginfo, p-cpe:/a:amazon:linux:php-gd, p-cpe:/a:amazon:linux:php-gd-debuginfo, p-cpe:/a:amazon:linux:php-gmp, p-cpe:/a:amazon:linux:php-gmp-debuginfo, p-cpe:/a:amazon:linux:php-intl, p-cpe:/a:amazon:linux:php-intl-debuginfo, p-cpe:/a:amazon:linux:php-json, p-cpe:/a:amazon:linux:php-json-debuginfo, p-cpe:/a:amazon:linux:php-ldap, p-cpe:/a:amazon:linux:php-ldap-debuginfo, p-cpe:/a:amazon:linux:php-mbstring, p-cpe:/a:amazon:linux:php-mbstring-debuginfo, p-cpe:/a:amazon:linux:php-mysqlnd, p-cpe:/a:amazon:linux:php-mysqlnd-debuginfo, p-cpe:/a:amazon:linux:php-odbc, p-cpe:/a:amazon:linux:php-odbc-debuginfo, p-cpe:/a:amazon:linux:php-opcache, p-cpe:/a:amazon:linux:php-opcache-debuginfo, p-cpe:/a:amazon:linux:php-pdo, p-cpe:/a:amazon:linux:php-pdo-debuginfo, p-cpe:/a:amazon:linux:php-pgsql, p-cpe:/a:amazon:linux:php-pgsql-debuginfo, p-cpe:/a:amazon:linux:php-process, p-cpe:/a:amazon:linux:php-process-debuginfo, p-cpe:/a:amazon:linux:php-snmp, p-cpe:/a:amazon:linux:php-snmp-debuginfo, p-cpe:/a:amazon:linux:php-soap, p-cpe:/a:amazon:linux:php-soap-debuginfo, p-cpe:/a:amazon:linux:php-tidy, p-cpe:/a:amazon:linux:php-tidy-debuginfo, p-cpe:/a:amazon:linux:php-xml, p-cpe:/a:amazon:linux:php-xml-debuginfo, p-cpe:/a:amazon:linux:php-xmlrpc, p-cpe:/a:amazon:linux:php-xmlrpc-debuginfo, cpe:/o:amazon:linux:2022

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: 6/1/2022

Vulnerability Publication Date: 2/27/2022

Reference Information

CVE: CVE-2021-21708

Detections

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