The BigDecimal library in Ruby 1.8.6 before p369 and 1.8.7 before p173 allows context-dependent attackers to cause a denial of service (application crash) via a string argument that represents a large number, as demonstrated by an attempted conversion to the Float data type.
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00731.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9780
https://exchange.xforce.ibmcloud.com/vulnerabilities/51032
https://bugs.launchpad.net/bugs/cve/2009-1904
https://bugs.launchpad.net/bugs/385436
http://www.vupen.com/english/advisories/2009/1563
http://www.ubuntu.com/usn/USN-805-1
http://www.securitytracker.com/id?1022371
http://www.securityfocus.com/bid/35278
http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/
http://www.ruby-forum.com/topic/189071
http://www.redhat.com/support/errata/RHSA-2009-1140.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:160
http://weblog.rubyonrails.org/2009/6/10/dos-vulnerability-in-ruby/
http://support.apple.com/kb/HT4077
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.430805
http://security.gentoo.org/glsa/glsa-200906-02.xml
http://secunia.com/advisories/37705
http://secunia.com/advisories/35937
http://secunia.com/advisories/35699
http://secunia.com/advisories/35593
http://secunia.com/advisories/35527
http://secunia.com/advisories/35399
http://mail-index.netbsd.org/pkgsrc-changes/2009/06/10/msg024708.html
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://groups.google.com/group/rubyonrails-security/msg/fad60751e2b9b4f6?dmode=source
http://github.com/NZKoz/bigdecimal-segfault-fix/tree/master