CVE-2011-2686

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.

• CWE-310

• http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlPatch
• http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.htmlPatch
• http://redmine.ruby-lang.org/issues/show/4338
• http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713Patch
• http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
• http://www.openwall.com/lists/oss-security/2011/07/11/1Patch
• http://www.openwall.com/lists/oss-security/2011/07/12/14Patch
• http://www.openwall.com/lists/oss-security/2011/07/20/1Patch
• http://www.openwall.com/lists/oss-security/2011/07/20/16Patch
• http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/Patch
• http://www.securityfocus.com/bid/49015
• https://bugzilla.redhat.com/show_bug.cgi?id=722415Patch
• https://exchange.xforce.ibmcloud.com/vulnerabilities/69032
• http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlPatch
• http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.htmlPatch
• http://redmine.ruby-lang.org/issues/show/4338
• http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713Patch
• http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
• http://www.openwall.com/lists/oss-security/2011/07/11/1Patch
• http://www.openwall.com/lists/oss-security/2011/07/12/14Patch
• http://www.openwall.com/lists/oss-security/2011/07/20/1Patch
• http://www.openwall.com/lists/oss-security/2011/07/20/16Patch
• http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/Patch
• http://www.securityfocus.com/bid/49015
• https://bugzilla.redhat.com/show_bug.cgi?id=722415Patch
• https://exchange.xforce.ibmcloud.com/vulnerabilities/69032

Published

Aug 5, 2011

Last Modified

Jun 16, 2026

Status

Modified

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