{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2016-03-27T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2018-07-14T09:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/09/30/6"}, {"name": "DSA-3966", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2017/dsa-3966"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062"}, {"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/10/01/2"}, {"name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"}, {"name": "[oss-security] 20160919 CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/09/19/9"}, {"name": "93031", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/93031"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ruby/openssl/issues/49"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2016-7798", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/09/30/6"}, {"name": "DSA-3966", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2017/dsa-3966"}, {"name": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062", "refsource": "CONFIRM", "url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062"}, {"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/10/01/2"}, {"name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"}, {"name": "[oss-security] 20160919 CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/09/19/9"}, {"name": "93031", "refsource": "BID", "url": "http://www.securityfocus.com/bid/93031"}, {"name": "https://github.com/ruby/openssl/issues/49", "refsource": "CONFIRM", "url": "https://github.com/ruby/openssl/issues/49"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T02:04:56.020Z"}, "title": "CVE Program Container", "references": [{"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/09/30/6"}, {"name": "DSA-3966", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2017/dsa-3966"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062"}, {"name": "[oss-security] 20160930 Re: CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/10/01/2"}, {"name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"}, {"name": "[oss-security] 20160919 CVE Request - Ruby OpenSSL Library - IV Reuse in GCM Mode", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/09/19/9"}, {"name": "93031", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/93031"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/ruby/openssl/issues/49"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2016-7798", "datePublished": "2017-01-30T22:00:00.000Z", "dateReserved": "2016-09-09T00:00:00.000Z", "dateUpdated": "2024-08-06T02:04:56.020Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:*", "matchCriteriaId": "5A99A902-22BC-4E8A-92CD-58A7ABA19A5E", "versionEndExcluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism."}, {"lang": "es", "value": "La openssl gem para Ruby utiliza el mismo vector de inicializaci\u00f3n (IV) en el modo GCM (aes - * - gcm) cuando el IV se establece en versiones anteriores a la clave, lo que facilita que los atacantes dependiendo del contexto eludan el mecanismo de protecci\u00f3n del cifrado."}], "id": "CVE-2016-7798", "lastModified": "2026-05-13T00:24:29.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": true, "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": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-01-30T22:59:00.747", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/09/19/9"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/09/30/6"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/10/01/2"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/93031"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/ruby/openssl/issues/49"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-3966"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/09/19/9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/09/30/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/10/01/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/93031"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/ruby/openssl/issues/49"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-3966"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-326"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "ruby: IV Reuse in GCM Mode", "id": "1381526", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1381526"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "status": "draft"}, "cvss3": {"cvss3_base_score": "3.7", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "details": ["The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism."], "mitigation": {"lang": "en:us", "value": "A possible workaround to this flaw is, when using aes-256-gcm mode, always set the key first and then the iv. For example when setting random keys and iv use the following code segment:\nkey = cipher.random_key\niv = cipher.random_iv"}, "name": "CVE-2016-7798", "package_state": [{"cpe": "cpe:/a:redhat:cloudforms_managementengine:5", "fix_state": "Will not fix", "package_name": "rh-ruby22-ruby", "product_name": "CloudForms Management Engine 5"}, {"cpe": "cpe:/a:redhat:cloudforms_managementengine:5", "fix_state": "Will not fix", "package_name": "ruby-200-ruby", "product_name": "CloudForms Management Engine 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:2", "fix_state": "Will not fix", "package_name": "rh-ruby22-ruby", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:2", "fix_state": "Will not fix", "package_name": "rh-ruby23-ruby", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:2", "fix_state": "Will not fix", "package_name": "ruby200-ruby", "product_name": "Red Hat Software Collections"}], "public_date": "2016-09-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-7798\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-7798"], "threat_severity": "Moderate"}

{}