CVE-2011-2686 Information

Description

Ruby before 1.8.7-p352 does not reset the random seed upon forking which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process a related issue to CVE-2003-0900. NOTE: this issue exists because of a regression during Ruby 1.8.6 development.

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/show/4338 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713 http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/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.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/ http://www.securityfocus.com/bid/49015 https://bugzilla.redhat.com/show_bug.cgi?id=722415 https://exchange.xforce.ibmcloud.com/vulnerabilities/69032