CVE-2012-5371

Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly 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, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.

Date published : 2012-11-28

http://www.securityfocus.com/bid/56484

http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/