National Cyber Awareness System

Vulnerability Summary for CVE-2012-5371

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=875236

Type: Patch Information

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=875236

External Source: CONFIRM

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

Type: Advisory; Patch Information

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

External Source: SECTRACK

Name: 1027747

Type: Patch Information

Hyperlink:http://securitytracker.com/id?1027747

External Source: MISC

Name: https://www.131002.net/data/talks/appsec12_slides.pdf

Hyperlink:https://www.131002.net/data/talks/appsec12_slides.pdf

External Source: XF

Name: ruby-hash-function-dos(79993)

Hyperlink:http://xforce.iss.net/xforce/xfdb/79993

External Source: UBUNTU

Name: USN-1733-1

Hyperlink:http://www.ubuntu.com/usn/USN-1733-1

External Source: BID

Name: 56484

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

External Source: OSVDB

Name: 87280

Hyperlink:http://www.osvdb.org/87280

External Source: MISC

Name: http://www.ocert.org/advisories/ocert-2012-001.html

Hyperlink:http://www.ocert.org/advisories/ocert-2012-001.html

External Source: SECUNIA

Name: 51253

Hyperlink:http://secunia.com/advisories/51253

External Source: MISC

Name: http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf

Hyperlink:http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf

External Source: MISC

Name: http://2012.appsec-forum.ch/conferences/#c17

Hyperlink:http://2012.appsec-forum.ch/conferences/#c17