National Cyber Awareness System

Vulnerability Summary for CVE-2011-4815

Overview

Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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US-CERT Vulnerability Note: VU#903934

Name: VU#903934

Hyperlink:http://www.kb.cert.org/vuls/id/903934

External Source: XF

Name: ruby-hash-dos(72020)

Hyperlink:http://xforce.iss.net/xforce/xfdb/72020

External Source: SECTRACK

Name: 1026474

Hyperlink:http://www.securitytracker.com/id?1026474

External Source: CONFIRM

Name: http://www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/

Hyperlink:http://www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/

External Source: MISC

Name: http://www.ocert.org/advisories/ocert-2011-003.html

Hyperlink:http://www.ocert.org/advisories/ocert-2011-003.html

External Source: MISC

Name: http://www.nruns.com/_downloads/advisory28122011.pdf

Hyperlink:http://www.nruns.com/_downloads/advisory28122011.pdf

External Source: CONFIRM

Name: http://support.apple.com/kb/HT5281

Hyperlink:http://support.apple.com/kb/HT5281

External Source: SECUNIA

Name: 47822

Hyperlink:http://secunia.com/advisories/47822

External Source: SECUNIA

Name: 47405

Hyperlink:http://secunia.com/advisories/47405

External Source: REDHAT

Name: RHSA-2012:0070

Hyperlink:http://rhn.redhat.com/errata/RHSA-2012-0070.html

External Source: REDHAT

Name: RHSA-2012:0069

Hyperlink:http://rhn.redhat.com/errata/RHSA-2012-0069.html

External Source: APPLE

Name: APPLE-SA-2012-05-09-1

Hyperlink:http://lists.apple.com/archives/security-announce/2012/May/msg00001.html

External Source: JVNDB

Name: JVNDB-2012-000066

Hyperlink:http://jvndb.jvn.jp/ja/contents/2012/JVNDB-2012-000066.html

External Source: JVN

Name: JVN#90615481

Hyperlink:http://jvn.jp/en/jp/JVN90615481/index.html

External Source: MLIST

Name: [ruby-talk] 20111228 [ANN] ruby 1.8.7 patchlevel 357 released

Hyperlink:http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/391606

External Source: BUGTRAQ

Name: 20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table

Hyperlink:http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html