PRIOn knowledge basePRION:CVE-2012-5371Design/Logic Flaw
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.
References
2012.appsec-forum.ch/conferences/
asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
secunia.com/advisories/51253
securitytracker.com/id?1027747
www.ocert.org/advisories/ocert-2012-001.html
www.osvdb.org/87280
www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/
www.securityfocus.com/bid/56484
www.ubuntu.com/usn/USN-1733-1
bugzilla.redhat.com/show_bug.cgi?id=875236
exchange.xforce.ibmcloud.com/vulnerabilities/79993
www.131002.net/data/talks/appsec12_slides.pdf
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