Amazon Linux AMI : rubygems (ALAS-2013-231)

Medium Nessus Plugin ID 70567

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 rubygems' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2013-231.html

Plugin Details

Severity: Medium

ID: 70567

File Name: ala_ALAS-2013-231.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2013/10/24

Updated: 2018/04/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

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:rubygems, p-cpe:/a:amazon:linux:rubygems-devel, cpe:/o:amazon:linux

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

Patch Publication Date: 2013/10/16

Reference Information

CVE: CVE-2013-4363

ALAS: 2013-231