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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.

 A buffer overrun vulnerability was found in Ruby. The issue occurs in a conversion algorithm from a String to a Float that causes process termination due to a segmentation fault, but under limited circumstances.
 This flaw may cause an illegal memory read. (CVE-2022-28739)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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: 1.3

Type: local

Agent: unix

Published: 10/10/2022

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, 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:ruby20-libs, p-cpe:/a:amazon:linux:rubygem20-bigdecimal, p-cpe:/a:amazon:linux:rubygem20-psych, p-cpe:/a:amazon:linux:rubygems20, p-cpe:/a:amazon:linux:rubygem20-io-console, p-cpe:/a:amazon:linux:ruby20, p-cpe:/a:amazon:linux:ruby20-debuginfo, p-cpe:/a:amazon:linux:ruby20-irb, p-cpe:/a:amazon:linux:ruby20-doc, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:ruby20-devel, p-cpe:/a:amazon:linux:rubygems20-devel

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