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    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.

    Published:Jul 2, 2011
    Last Modified:Apr 11, 2025
    EPS:Aug 5, 2011
    EPSS Score:0.01766
    CVSS Score:5

    Affected Products

    Vendor
    Ruby-lang
    Product
    Ruby

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High