Vulnerability Monitor

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CVE-2011-2705

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.

Published

2011-08-05T21:55:04.530

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ruby-lang	ruby	≤ 1.8.7-334	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7-160	Yes
Application	ruby-lang	ruby	1.8.7-173	Yes
Application	ruby-lang	ruby	1.8.7-248	Yes
Application	ruby-lang	ruby	1.8.7-249	Yes
Application	ruby-lang	ruby	1.8.7-299	Yes
Application	ruby-lang	ruby	1.8.7-302	Yes
Application	ruby-lang	ruby	1.8.7-330	Yes
Application	ruby-lang	ruby	1.8.7-p21	Yes
Application	ruby-lang	ruby	1.9	Yes
Application	ruby-lang	ruby	1.9	Yes
Application	ruby-lang	ruby	1.9.0	Yes
Application	ruby-lang	ruby	1.9.0	Yes
Application	ruby-lang	ruby	1.9.0-0	Yes
Application	ruby-lang	ruby	1.9.0-1	Yes
Application	ruby-lang	ruby	1.9.0-2	Yes
Application	ruby-lang	ruby	1.9.0-20060415	Yes
Application	ruby-lang	ruby	1.9.0-20070709	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.1	Yes
Application	ruby-lang	ruby	1.9.2	Yes
Application	ruby-lang	ruby	1.9.2	Yes
Application	ruby-lang	ruby	1.9.2-p136	Yes
Application	ruby-lang	ruby	1.9.2-p180	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html Patch ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html ([email protected])
http://redmine.ruby-lang.org/issues/4579 ([email protected])
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050 Patch ([email protected])
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog ([email protected])
http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/11/1 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/12/14 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/20/1 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/20/16 Patch ([email protected])
http://www.redhat.com/support/errata/RHSA-2011-1581.html ([email protected])
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/ Patch ([email protected])
http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/ Patch ([email protected])
http://www.securityfocus.com/bid/49015 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=722415 Patch ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html Patch (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html (af854a3a-2127-422b-91ae-364da2661108)
http://redmine.ruby-lang.org/issues/4579 (af854a3a-2127-422b-91ae-364da2661108)
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog (af854a3a-2127-422b-91ae-364da2661108)
http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/11/1 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/12/14 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/20/1 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/20/16 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2011-1581.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/ Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/ Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/49015 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=722415 Patch (af854a3a-2127-422b-91ae-364da2661108)