CVE-2020-10933

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*", "matchCriteriaId": "8F9FF206-523F-4E17-8BDB-67677576B376", "versionEndIncluding": "2.5.7", "versionStartIncluding": "2.5.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4FC67C1-28AC-4E34-A89C-33892FF0BEA2", "versionEndIncluding": "2.6.5", "versionStartIncluding": "2.6.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:ruby-lang:ruby:2.7.0:*:*:*:*:*:*:*", "matchCriteriaId": "9E0F180A-5E99-4040-8D78-4A6A0CF97FEA", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en Ruby versiones 2.5.x hasta 2.5.7, versiones 2.6.x hasta 2.6.5, y versi\u00f3n 2.7.0. Si una v\u00edctima llama a BasicSocket#read_nonblock(requested_size, buffer, exception: false), el m\u00e9todo redimensiona el buffer para ajustarlo al tama\u00f1o requerido, pero ning\u00fan dato es copiado. Por lo tanto, la cadena del b\u00fafer proporciona el valor previo de la pila. Esto puede exponer datos posiblemente confidenciales del int\u00e9rprete."}], "id": "CVE-2020-10933", "lastModified": "2026-06-17T02:48:42.400", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-05-04T15:15:13.963", "references": [{"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20200625-0001/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4721"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20200625-0001/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4721"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:2587", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "ruby:2.5-8040020200923213910.522a0ee4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-29T00:00:00Z"}, {"advisory": "RHSA-2021:2588", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "ruby:2.6-8040020210430142949.522a0ee4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-29T00:00:00Z"}, {"advisory": "RHSA-2022:0581", "cpe": "cpe:/a:redhat:rhel_e4s:8.1", "package": "ruby:2.6-8010020220201152941.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-02-21T00:00:00Z"}, {"advisory": "RHSA-2022:0582", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "ruby:2.6-8020020220201131207.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-02-21T00:00:00Z"}, {"advisory": "RHSA-2021:2104", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.9-9.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-05-26T00:00:00Z"}, {"advisory": "RHSA-2021:2230", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby26-ruby-0:2.6.7-119.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-06-03T00:00:00Z"}, {"advisory": "RHSA-2021:2104", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.9-9.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2021-05-26T00:00:00Z"}, {"advisory": "RHSA-2021:2104", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.9-9.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-05-26T00:00:00Z"}, {"advisory": "RHSA-2021:2230", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby26-ruby-0:2.6.7-119.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-06-03T00:00:00Z"}], "bugzilla": {"description": "ruby: BasicSocket#read_nonblock method leads to information disclosure", "id": "1833291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1833291"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-805->CWE-200", "details": ["An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter."], "name": "CVE-2020-10933", "package_state": [{"cpe": "cpe:/a:redhat:cloudforms_managementengine:5", "fix_state": "Not affected", "package_name": "ruby", "product_name": "CloudForms Management Engine 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-03-31T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-10933\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-10933\nhttps://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933"], "statement": "Red Hat CloudForms 5 has stopped shipping Ruby and 4.7 ships Ruby 2.4 series, hence not vulnerable to the flaw.\nRed Hat Enterprise Linux versions prior than 8 ships ruby 2.0 or older releases, hence not vulnerable to the flaw.", "threat_severity": "Moderate"}

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