CVE-2012-5370 Information

Description

JRuby 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 the MurmurHash2 algorithm a different vulnerability than CVE-2011-4838.

Reference

http://2012.appsec-forum.ch/conferences/c17 http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf http://rhn.redhat.com/errata/RHSA-2013-0533.html http://www.ocert.org/advisories/ocert-2012-001.html https://bugzilla.redhat.com/show_bug.cgi?id=880671 https://www.131002.net/data/talks/appsec12_slides.pdf