Test ID:	1.3.6.1.4.1.25623.1.0.881167
Category:	CentOS Local Security Checks
Title:	CentOS Update for ruby CESA-2012:0069 centos6
Summary:	The remote host is missing an update for the 'ruby'; package(s) announced via the referenced advisory.
Description:	Summary: The remote host is missing an update for the 'ruby' package(s) announced via the referenced advisory. Vulnerability Insight: Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A denial of service flaw was found in the implementation of associative arrays (hashes) in Ruby. An attacker able to supply a large number of inputs to a Ruby application (such as HTTP POST request parameters sent to a web application) that are used as keys when inserting data into an array could trigger multiple hash function collisions, making array operations take an excessive amount of CPU time. To mitigate this issue, randomization has been added to the hash function to reduce the chance of an attacker successfully causing intentional collisions. (CVE-2011-4815) Red Hat would like to thank oCERT for reporting this issue. oCERT acknowledges Julian Wälde and Alexander Klink as the original reporters. All users of ruby are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. Affected Software/OS: ruby on CentOS 6 Solution: Please install the updated packages. CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2011-4815 http://lists.apple.com/archives/security-announce/2012/May/msg00001.html Bugtraq: 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table (Google Search) http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html CERT/CC vulnerability note: VU#903934 http://www.kb.cert.org/vuls/id/903934 http://jvn.jp/en/jp/JVN90615481/index.html http://jvndb.jvn.jp/ja/contents/2012/JVNDB-2012-000066.html http://www.nruns.com/_downloads/advisory28122011.pdf http://www.ocert.org/advisories/ocert-2011-003.html http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/391606 RedHat Security Advisories: RHSA-2012:0069 http://rhn.redhat.com/errata/RHSA-2012-0069.html RedHat Security Advisories: RHSA-2012:0070 http://rhn.redhat.com/errata/RHSA-2012-0070.html http://www.securitytracker.com/id?1026474 http://secunia.com/advisories/47405 http://secunia.com/advisories/47822 XForce ISS Database: ruby-hash-dos(72020) https://exchange.xforce.ibmcloud.com/vulnerabilities/72020
Copyright	Copyright (C) 2012 Greenbone AG

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