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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00989.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

Configuration 1 [-]

OR cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p72:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-160:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-173:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-248:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-249:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-299:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-302:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-330:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7-p21:*:*:*:*:*:*:*

Configuration 2 [-]

OR cpe:2.3:a:ruby-lang:ruby:1.9:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9:r18423:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0:r18423:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0-0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0-1:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0-2:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0-20060415:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0-20070709:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-p129:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-p243:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-p376:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-p429:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-preview_1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-preview_2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-rc1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:-rc2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.2:dev:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.2-p136:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.2-p180:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 6
ruby-0:1.8.7.352-3.el6 cpe:/o:redhat:enterprise_linux:6 RHSA-2011:1581 2011-12-05T00:00:00Z

No data.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-88-1 ruby1.8 security update
Debian DLA Debian DLA DLA-235-1 ruby1.9.1 security update
EUVD EUVD EUVD-2011-2686 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.
Ubuntu USN Ubuntu USN USN-1377-1 Ruby vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html cve-icon cve-icon
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html cve-icon cve-icon
http://redmine.ruby-lang.org/issues/4579 cve-icon cve-icon
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050 cve-icon cve-icon
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog cve-icon cve-icon
http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2011/07/11/1 cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2011/07/12/14 cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2011/07/20/1 cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2011/07/20/16 cve-icon cve-icon
http://www.redhat.com/support/errata/RHSA-2011-1581.html cve-icon cve-icon
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/ cve-icon cve-icon
http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/ cve-icon cve-icon
http://www.securityfocus.com/bid/49015 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=722415 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2011-2705 cve-icon
https://www.cve.org/CVERecord?id=CVE-2011-2705 cve-icon
History

No history.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T23:08:23.972Z

Reserved: 2011-07-11T00:00:00.000Z

Link: CVE-2011-2705

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2011-08-05T21:55:04.530

Modified: 2025-04-11T00:51:21.963

Link: CVE-2011-2705

cve-icon Redhat

Severity : Low

Publid Date: 2011-07-02T00:00:00Z

Links: CVE-2011-2705 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses