CVE-2011-2705

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Summary

CVECVE-2011-2705
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-08-05 21:55:04 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

AV:N/AC:L/Au:N/C:P/I:N/A:N

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:L/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ruby-lang Ruby 1.8.7 p22 All All
Application Ruby-lang Ruby 1.8.7 p71 All All
Application Ruby-lang Ruby 1.8.7 p72 All All
Application Ruby-lang Ruby 1.8.7-160 All All All
Application Ruby-lang Ruby 1.8.7-173 All All All
Application Ruby-lang Ruby 1.8.7-248 All All All
Application Ruby-lang Ruby 1.8.7-249 All All All
Application Ruby-lang Ruby 1.8.7-299 All All All
Application Ruby-lang Ruby 1.8.7-302 All All All
Application Ruby-lang Ruby 1.8.7-330 All All All
Application Ruby-lang Ruby 1.8.7-p21 All All All
Application Ruby-lang Ruby 1.9 All All All
Application Ruby-lang Ruby 1.9 r18423 All All
Application Ruby-lang Ruby 1.9.0 All All All
Application Ruby-lang Ruby 1.9.0 r18423 All All
Application Ruby-lang Ruby 1.9.0-0 All All All
Application Ruby-lang Ruby 1.9.0-1 All All All
Application Ruby-lang Ruby 1.9.0-2 All All All
Application Ruby-lang Ruby 1.9.0-20060415 All All All
Application Ruby-lang Ruby 1.9.0-20070709 All All All
Application Ruby-lang Ruby 1.9.1 All All All
Application Ruby-lang Ruby 1.9.1 -p0 All All
Application Ruby-lang Ruby 1.9.1 -p129 All All
Application Ruby-lang Ruby 1.9.1 -p243 All All
Application Ruby-lang Ruby 1.9.1 -p376 All All
Application Ruby-lang Ruby 1.9.1 -p429 All All
Application Ruby-lang Ruby 1.9.1 -preview_1 All All
Application Ruby-lang Ruby 1.9.1 -preview_2 All All
Application Ruby-lang Ruby 1.9.1 -rc1 All All
Application Ruby-lang Ruby 1.9.1 -rc2 All All
Application Ruby-lang Ruby 1.9.2 All All All
Application Ruby-lang Ruby 1.9.2 dev All All
Application Ruby-lang Ruby 1.9.2-p136 All All All
Application Ruby-lang Ruby 1.9.2-p180 All All All
Application Ruby-lang Ruby All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - CVE Request: ruby PRNG fixes af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Patch
svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog af854a3a-2127-422b-91ae-364da2661108 svn.ruby-lang.org
oss-security - Re: CVE Request: ruby PRNG fixes af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Patch
oss-security - Re: CVE Request: ruby PRNG fixes af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Patch
Ruby 1.8.7-p352 released af854a3a-2127-422b-91ae-364da2661108 www.ruby-lang.org Patch
[ruby] Revision 32050 af854a3a-2127-422b-91ae-364da2661108 svn.ruby-lang.org Patch
oss-security - Re: CVE Request: ruby PRNG fixes af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Patch
svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog af854a3a-2127-422b-91ae-364da2661108 svn.ruby-lang.org
[SECURITY] Fedora 15 Update: ruby-1.8.7.352-1.fc15 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Ruby Random Number Generation Local Denial Of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
722415 – (CVE-2011-2686, CVE-2011-2705, CVE-2011-3009) CVE-2011-2686 CVE-2011-2705 CVE-2011-3009 ruby: Properly initialize the random number generator when forking new process af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Patch
[SECURITY] Fedora 14 Update: ruby-1.8.7.352-1.fc14 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Patch
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com
Ruby 1.9.2-p290 is released af854a3a-2127-422b-91ae-364da2661108 www.ruby-lang.org Patch
Bug #4579: SecureRandom + OpenSSL may repeat with fork - Ruby master - Ruby Issue Tracking System af854a3a-2127-422b-91ae-364da2661108 redmine.ruby-lang.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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