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CVE-2011-2686

Date: August 5, 2011

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.

Severity Score

Related Resources (17)

http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html
http://redmine.ruby-lang.org/issues/show/4338
https://bugzilla.redhat.com/show_bug.cgi?id=722415
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
http://www.securityfocus.com/bid/49015
https://access.redhat.com/security/cve/CVE-2011-2686
http://www.openwall.com/lists/oss-security/2011/07/12/14
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713
http://www.openwall.com/lists/oss-security/2011/07/11/1
https://nvd.nist.gov/vuln/detail/CVE-2011-2686
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/
http://www.openwall.com/lists/oss-security/2011/07/20/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2011-2686
http://www.openwall.com/lists/oss-security/2011/07/20/16
https://exchange.xforce.ibmcloud.com/vulnerabilities/69032
https://www.mend.io/vulnerability-database/CVE-2011-2686

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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