Bug 959916 (CVE-2009-4124)

Summary:	CVE-2009-4124 ruby: Heap-based buffer overflow in the rb_str_justify() function
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bkabrda, jeremy, mmorsi, mtasaka, tagoh, vanmeeuwen+fedora, vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2013-05-06 09:12:50 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 Jan Lieskovsky 2013-05-06 08:45:27 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2009-4124 to the following vulnerability:

Heap-based buffer overflow in the rb_str_justify function in string.c in Ruby 1.9.1 before 1.9.1-p376 allows context-dependent attackers to execute arbitrary code via unspecified vectors involving (1) String#ljust, (2) String#center, or (3) String#rjust. NOTE: some of these details are obtained from third party information. 

References:
[1] http://www.ruby-lang.org/en/news/2009/12/07/heap-overflow-in-string/
[2] http://www.securityfocus.com/bid/37278
[3] http://www.osvdb.org/60880
[4] http://secunia.com/advisories/37660
[5] http://www.vupen.com/english/advisories/2009/3471
[6] http://xforce.iss.net/xforce/xfdb/54674

Other references:
[7] http://swik.net/Ruby/Ruby+Home+Page/Ruby+1.9.1-p376+is+released/ddwsf

Comment 1 Jan Lieskovsky 2013-05-06 08:51:34 UTC

Relevant upstream patch:
[8] https://github.com/ruby/ruby/commit/1c2ef610358af33f9ded3086aa2d70aac03dcac5

Comment 2 Jan Lieskovsky 2013-05-06 08:58:21 UTC

Not vulnerable. This issue did NOT affect the versions of the ruby package, as shipped with Fedora release of 17 and 18 as the current versions already include the upstream patch, which corrected the issue.

Comment 3 Jan Lieskovsky 2013-05-06 09:12:50 UTC

Statement:

Not vulnerable. This issue did not affect the versions of ruby as shipped with Red Hat Enterprise Linux 5 and 6 as it did not affect the Ruby 1.8 series.