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Amazon Linux AMI : ruby24 (ALAS-2021-1501)

high Nessus Plugin ID 149791

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Synopsis

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

Description

The version of ruby24 installed on the remote host is prior to 2.4.10-2.14. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1501 advisory.

 - The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing. (CVE-2021-28965)

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 ruby24' to update your system.

See Also

https://access.redhat.com/security/cve/CVE-2021-28965

https://alas.aws.amazon.com/ALAS-2021-1501.html

Plugin Details

Severity: High

ID: 149791

File Name: ala_ALAS-2021-1501.nasl

Version: 1.2

Type: local

Agent: unix

Published: 5/20/2021

Updated: 5/20/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-28965

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:N/I:H/A:N

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:ruby24, p-cpe:/a:amazon:linux:ruby24-debuginfo, p-cpe:/a:amazon:linux:ruby24-devel, p-cpe:/a:amazon:linux:ruby24-doc, p-cpe:/a:amazon:linux:ruby24-irb, p-cpe:/a:amazon:linux:ruby24-libs, p-cpe:/a:amazon:linux:rubygem24-bigdecimal, p-cpe:/a:amazon:linux:rubygem24-did_you_mean, p-cpe:/a:amazon:linux:rubygem24-io-console, p-cpe:/a:amazon:linux:rubygem24-json, p-cpe:/a:amazon:linux:rubygem24-minitest5, p-cpe:/a:amazon:linux:rubygem24-net-telnet, p-cpe:/a:amazon:linux:rubygem24-power_assert, p-cpe:/a:amazon:linux:rubygem24-psych, p-cpe:/a:amazon:linux:rubygem24-rdoc, p-cpe:/a:amazon:linux:rubygem24-test-unit, p-cpe:/a:amazon:linux:rubygem24-xmlrpc, p-cpe:/a:amazon:linux:rubygems24, p-cpe:/a:amazon:linux:rubygems24-devel, cpe:/o:amazon:linux

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2021

Vulnerability Publication Date: 4/21/2021

Reference Information

CVE: CVE-2021-28965

ALAS: 2021-1501