Detections
Analytics

Amazon Linux AMI : php73 (ALAS-2021-1532)

medium Nessus Plugin ID 153169

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Synopsis

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

Description

The version of php73 installed on the remote host is prior to 7.3.29-1.30. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2021-1532 advisory.

 - In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.
 (CVE-2021-21705)

 - In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.
 (CVE-2021-21704)

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 php73' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1532.html

https://access.redhat.com/security/cve/CVE-2021-21704

https://access.redhat.com/security/cve/CVE-2021-21705

Plugin Details

Severity: Medium

ID: 153169

File Name: ala_ALAS-2021-1532.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/9/2021

Updated: 12/1/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-21705

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:php73, p-cpe:/a:amazon:linux:php73-bcmath, p-cpe:/a:amazon:linux:php73-cli, p-cpe:/a:amazon:linux:php73-common, p-cpe:/a:amazon:linux:php73-dba, p-cpe:/a:amazon:linux:php73-dbg, p-cpe:/a:amazon:linux:php73-debuginfo, p-cpe:/a:amazon:linux:php73-devel, p-cpe:/a:amazon:linux:php73-embedded, p-cpe:/a:amazon:linux:php73-enchant, p-cpe:/a:amazon:linux:php73-fpm, p-cpe:/a:amazon:linux:php73-gd, p-cpe:/a:amazon:linux:php73-gmp, p-cpe:/a:amazon:linux:php73-imap, p-cpe:/a:amazon:linux:php73-intl, p-cpe:/a:amazon:linux:php73-json, p-cpe:/a:amazon:linux:php73-ldap, p-cpe:/a:amazon:linux:php73-mbstring, p-cpe:/a:amazon:linux:php73-mysqlnd, p-cpe:/a:amazon:linux:php73-odbc, p-cpe:/a:amazon:linux:php73-opcache, p-cpe:/a:amazon:linux:php73-pdo, p-cpe:/a:amazon:linux:php73-pdo-dblib, p-cpe:/a:amazon:linux:php73-pgsql, p-cpe:/a:amazon:linux:php73-process, p-cpe:/a:amazon:linux:php73-pspell, p-cpe:/a:amazon:linux:php73-recode, p-cpe:/a:amazon:linux:php73-snmp, p-cpe:/a:amazon:linux:php73-soap, p-cpe:/a:amazon:linux:php73-tidy, p-cpe:/a:amazon:linux:php73-xml, p-cpe:/a:amazon:linux:php73-xmlrpc, cpe:/o:amazon:linux

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: 9/2/2021

Vulnerability Publication Date: 7/22/2021

Reference Information

CVE: CVE-2021-21704, CVE-2021-21705

ALAS: 2021-1532