Bug 1490845 (CVE-2014-6438)

Summary:	CVE-2014-6438 ruby: Unsafe parsing of long strings via decode_www_form_component method
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bkearney, cbillett, ccoleman, cpelland, dajohnso, dclarizi, dedgar, dmcphers, gblomqui, gmccullo, gtanzill, hhorak, hhudgeon, jfrey, jgoulding, jhardy, jorton, jprause, kseifried, mmorsi, mtasaka, obarenbo, roliveri, ruby-maint, simaishi, s, strzibny, tomckay, vanmeeuwen+fedora, vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ruby 1.9.2-p330	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-09-12 11:21:09 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Andrej Nemec 2017-09-12 11:19:49 UTC

The URI.decode_www_form_component method in Ruby before 1.9.2-p330 allows remote attackers to cause a denial of service (catastrophic regular expression backtracking, resource consumption, or application crash) via a crafted string.

External References:

https://www.ruby-lang.org/en/news/2014/08/19/ruby-1-9-2-p330-released/

References:

http://www.openwall.com/lists/oss-security/2015/07/13/5
https://github.com/ruby/www.ruby-lang.org/issues/817