Amazon Linux AMI : ruby20 (ALAS-2020-1416)

medium Nessus Plugin ID 139550

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VPR Score: 5.9

Synopsis

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

Description

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
(CVE-2018-16396)

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269 , but does not rely on poor garbage-collection behavior within Ruby.
Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent. (CVE-2020-10663)

Solution

Run 'yum update ruby20' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2020-1416.html

Plugin Details

Severity: Medium

ID: 139550

File Name: ala_ALAS-2020-1416.nasl

Version: 1.1

Type: local

Agent: unix

Published: 8/13/2020

Updated: 8/13/2020

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS v2.0

Base Score: 6.8

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

CVSS v3.0

Base Score: 8.1

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:*:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20-doc:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20-irb:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:ruby20-libs:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:rubygem20-bigdecimal:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:rubygem20-io-console:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:rubygem20-psych:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:rubygems20:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:rubygems20-devel:*:*:*:*:*:*:*

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

Patch Publication Date: 8/12/2020

Vulnerability Publication Date: 11/16/2018

Reference Information

CVE: CVE-2018-16396, CVE-2020-10663

ALAS: 2020-1416