CVE-2011-2686

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NOTE: this issue exists because of a regression during Ruby 1.8.6 development."}, {"lang": "es", "value": "Ruby en versiones anteriores a la 1.8.7-p352 no resetea la semilla aleatoria despu\u00e9s de la creacci\u00f3n de procesos (\"forking\"), lo que facilita a atacantes dependientes del contexto predecir los valores de n\u00fameros aleatorios bas\u00e1ndose en el conocimiento de n\u00fameros de secuencia obtenidos de procesos hijo diferentes. Vulnerabilidad relacionada con la CVE-2003-0900. NOTA: este problema existe debido a una regresi\u00f3n durante el desarrollo de Ruby 1.8.6."}], "id": "CVE-2011-2686", "lastModified": "2026-06-16T23:31:47.733", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2011-08-05T21:55:04.467", "references": [{"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html"}, {"source": "secalert@redhat.com", "url": "http://redmine.ruby-lang.org/issues/show/4338"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713"}, {"source": "secalert@redhat.com", "url": "http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/11/1"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/12/14"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/20/1"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/20/16"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/49015"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=722415"}, {"source": "secalert@redhat.com", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69032"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://redmine.ruby-lang.org/issues/show/4338"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/11/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/12/14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/20/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/07/20/16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/49015"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=722415"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69032"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-310"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "ruby: Properly initialize the random number generator when forking new process", "id": "722415", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=722415"}, "csaw": false, "cvss": {"cvss_base_score": "2.1", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "status": "draft"}, "details": ["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."], "name": "CVE-2011-2686", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2011-07-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-2686\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2686"], "threat_severity": "Low"}

{}