CVE-2011-4838 Information

Description

JRuby before 1.6.5.1 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.

Reference

http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html http://jruby.org/2011/12/27/jruby-1-6-5-1.html http://rhn.redhat.com/errata/RHSA-2012-1232.html http://secunia.com/advisories/47407 http://secunia.com/advisories/50084 http://security.gentoo.org/glsa/glsa-201207-06.xml http://www.kb.cert.org/vuls/id/903934 http://www.nruns.com/_downloads/advisory28122011.pdf http://www.ocert.org/advisories/ocert-2011-003.html https://exchange.xforce.ibmcloud.com/vulnerabilities/72019