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Amazon Linux AMI : ruby21 (ALAS-2014-449)

medium Nessus Plugin ID 79298

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Synopsis

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

Description

The upstream patch for CVE-2014-8080 introduced checks against the REXML.entity_expansion_text_limit, but did not add restrictions to limit the number of expansions performed, i.e. checks against the REXML::Document.entity_expansion_limit. As a consequence, even with the patch applied, a small XML document could cause REXML to use an excessive amount of CPU time. High memory usage can be achieved using larger inputs.

Solution

Run 'yum update ruby21' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2014-449.html

Plugin Details

Severity: Medium

ID: 79298

File Name: ala_ALAS-2014-449.nasl

Version: 1.6

Type: local

Agent: unix

Published: 11/18/2014

Updated: 4/18/2018

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: 5

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:ruby21, p-cpe:/a:amazon:linux:ruby21-devel, p-cpe:/a:amazon:linux:ruby21-doc, p-cpe:/a:amazon:linux:rubygem21-psych, p-cpe:/a:amazon:linux:rubygems21, p-cpe:/a:amazon:linux:ruby21-libs, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:ruby21-irb, p-cpe:/a:amazon:linux:rubygem21-bigdecimal, p-cpe:/a:amazon:linux:rubygem21-io-console, p-cpe:/a:amazon:linux:rubygems21-devel, p-cpe:/a:amazon:linux:ruby21-debuginfo

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

Patch Publication Date: 11/13/2014

Reference Information

CVE: CVE-2014-8090

ALAS: 2014-449