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Amazon Linux AMI : ruby19 (ALAS-2014-290)

medium Nessus Plugin ID 72746

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Synopsis

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

Description

Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2, 1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression. NOTE: this issue is due to an incomplete fix for CVE-2013-4287 .

Solution

Run 'yum update ruby19' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2014-290.html

Plugin Details

Severity: Medium

ID: 72746

File Name: ala_ALAS-2014-290.nasl

Version: 1.4

Type: local

Agent: unix

Published: 3/2/2014

Updated: 4/18/2018

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:ruby19, p-cpe:/a:amazon:linux:rubygem19-json, p-cpe:/a:amazon:linux:rubygem19-rdoc, p-cpe:/a:amazon:linux:ruby19-debuginfo, p-cpe:/a:amazon:linux:ruby19-libs, p-cpe:/a:amazon:linux:rubygem19-bigdecimal, p-cpe:/a:amazon:linux:rubygems19-devel, p-cpe:/a:amazon:linux:ruby19-devel, p-cpe:/a:amazon:linux:rubygem19-io-console, p-cpe:/a:amazon:linux:rubygem19-minitest, p-cpe:/a:amazon:linux:rubygem19-rake, p-cpe:/a:amazon:linux:ruby19-irb, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:ruby19-doc, p-cpe:/a:amazon:linux:rubygems19

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

Patch Publication Date: 2/26/2014

Reference Information

CVE: CVE-2013-4363

ALAS: 2014-290