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Amazon Linux 2 : ruby (ALASRUBY3.0-2023-004)

high Nessus Plugin ID 182045

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of ruby installed on the remote host is prior to 3.0.5-155. It is, therefore, affected by a vulnerability as referenced in the ALAS2RUBY3.0-2023-004 advisory.

 - The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object. (CVE-2021-33621)

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 ruby' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALASRUBY3.0-2023-004.html

https://alas.aws.amazon.com/cve/html/CVE-2021-33621.html

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

Plugin Details

Severity: High

ID: 182045

File Name: al2_ALASRUBY3_0-2023-004.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/27/2023

Updated: 9/28/2023

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: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2021-33621

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/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:rubygem-rss, p-cpe:/a:amazon:linux:ruby-devel, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:rubygem-irb, p-cpe:/a:amazon:linux:rubygem-test-unit, p-cpe:/a:amazon:linux:ruby-libs, p-cpe:/a:amazon:linux:rubygems, p-cpe:/a:amazon:linux:rubygems-devel, p-cpe:/a:amazon:linux:ruby-debuginfo, p-cpe:/a:amazon:linux:ruby-default-gems, p-cpe:/a:amazon:linux:rubygem-typeprof, p-cpe:/a:amazon:linux:rubygem-rake, p-cpe:/a:amazon:linux:rubygem-psych, p-cpe:/a:amazon:linux:rubygem-bigdecimal, p-cpe:/a:amazon:linux:rubygem-power_assert, p-cpe:/a:amazon:linux:rubygem-minitest, p-cpe:/a:amazon:linux:rubygem-io-console, p-cpe:/a:amazon:linux:rubygem-bundler, p-cpe:/a:amazon:linux:rubygem-rexml, p-cpe:/a:amazon:linux:rubygem-rdoc, p-cpe:/a:amazon:linux:ruby-doc, p-cpe:/a:amazon:linux:rubygem-json, p-cpe:/a:amazon:linux:ruby, p-cpe:/a:amazon:linux:rubygem-rbs

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: 8/21/2023

Vulnerability Publication Date: 11/18/2022

Reference Information

CVE: CVE-2021-33621