Amazon Linux 2022 : (ALAS2022-2022-073)

critical Nessus Plugin ID 164734

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Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-073 advisory.

- In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended. (CVE-2021-21707)

- 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 these issues 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: 164734

File Name: al2022_ALAS2022-2022-073.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 9/6/2022

Updated: 10/18/2023

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: 5.6

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

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: 5/18/2022

Vulnerability Publication Date: 11/29/2021

Reference Information

CVE: CVE-2021-21707, CVE-2021-21708

IAVA: 2021-A-0566-S

Detections

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