National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-2705 Detail

Current Description

The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html
http://redmine.ruby-lang.org/issues/4579
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050 Patch
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog
http://www.openwall.com/lists/oss-security/2011/07/11/1 Patch
http://www.openwall.com/lists/oss-security/2011/07/12/14 Patch
http://www.openwall.com/lists/oss-security/2011/07/20/1 Patch
http://www.openwall.com/lists/oss-security/2011/07/20/16 Patch
http://www.redhat.com/support/errata/RHSA-2011-1581.html
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/ Patch
http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/ Patch
http://www.securityfocus.com/bid/49015
https://bugzilla.redhat.com/show_bug.cgi?id=722415 Patch

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/a:ruby-lang:ruby:1.8.7:p22
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7:p71
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7:p72
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-160
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-173
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-248
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-249
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-299
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-302
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.8.7-330
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby
     Show Matching CPE(s)
Up to (including)
1.8.7-334
 cpe:/a:ruby-lang:ruby:1.8.7-p21
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:/a:ruby-lang:ruby:1.9
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9:r18423
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0:r18423
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0-0
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0-1
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0-2
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0-20060415
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.0-20070709
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-p0
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-p129
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-p243
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-p376
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-p429
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-preview_1
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-preview_2
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-rc1
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.1:-rc2
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.2
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.2:dev
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.2-p136
     Show Matching CPE(s)
 cpe:/a:ruby-lang:ruby:1.9.2-p180
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-2705
NVD Published Date:
08/05/2011
NVD Last Modified:
01/18/2012