CVE-2011-2705 Information

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.

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html 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 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 http://www.openwall.com/lists/oss-security/2011/07/12/14 http://www.openwall.com/lists/oss-security/2011/07/20/1 http://www.openwall.com/lists/oss-security/2011/07/20/16 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/ http://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/ http://www.securityfocus.com/bid/49015 https://bugzilla.redhat.com/show_bug.cgi?id=722415