CVE-2012-5371 Information

Description

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.

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://secunia.com/advisories/51253 http://securitytracker.com/id?1027747 http://www.ocert.org/advisories/ocert-2012-001.html http://www.osvdb.org/87280 http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/ http://www.securityfocus.com/bid/56484 http://www.ubuntu.com/usn/USN-1733-1 https://bugzilla.redhat.com/show_bug.cgi?id=875236 https://exchange.xforce.ibmcloud.com/vulnerabilities/79993 https://www.131002.net/data/talks/appsec12_slides.pdf