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Amazon Linux AMI : ruby20 (ALAS-2022-1638)

high Nessus Plugin ID 165994

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Synopsis

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

Description

The version of ruby20 installed on the remote host is prior to 2.0.0.648-2.41. It is, therefore, affected by a vulnerability as referenced in the ALAS-2022-1638 advisory.

 - There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f. (CVE-2022-28739)

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 ruby20' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2022-1638.html

https://alas.aws.amazon.com/cve/html/CVE-2022-28739.html

Plugin Details

Severity: High

ID: 165994

File Name: ala_ALAS-2022-1638.nasl

Version: 1.2

Type: local

Agent: unix

Published: 10/10/2022

Updated: 10/10/2022

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: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2022-28739

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:rubygem20-psych, p-cpe:/a:amazon:linux:rubygems20-devel, p-cpe:/a:amazon:linux:ruby20-doc, p-cpe:/a:amazon:linux:ruby20, p-cpe:/a:amazon:linux:ruby20-debuginfo, p-cpe:/a:amazon:linux:rubygems20, p-cpe:/a:amazon:linux:rubygem20-bigdecimal, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:ruby20-libs, p-cpe:/a:amazon:linux:rubygem20-io-console, p-cpe:/a:amazon:linux:ruby20-devel, p-cpe:/a:amazon:linux:ruby20-irb

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/3/2022

Vulnerability Publication Date: 4/13/2022

Reference Information

CVE: CVE-2022-28739