{ "document": { "aggregate_severity": { "text": "Critical" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_alt_common/el7/vex/2018/cve-2018-16395-els_alt_common-el7.json" } ], "tracking": { "current_release_date": "2026-06-12T16:47:26Z", "generator": { "date": "2026-06-12T16:47:26Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2018-16395-ELS_ALT_COMMON-EL7", "initial_release_date": "2018-11-16T18:29:00Z", "revision_history": [ { "date": "2018-11-16T18:29:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-06-12T16:47:26Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2018-16395" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 7", "product": { "name": "Community Enterprise Operating System 7", "product_id": "CentOS-7", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Cloud Linux Software, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "product": { "name": "alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "product_id": "alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11@1.1.1w-3.3.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "product": { "name": "alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "product_id": "alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11@1.1.1w-3.1.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "product": { "name": "alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "product_id": "alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11@1.1.1w-3.2.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "product": { "name": "alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "product_id": "alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-devel@1.1.1w-3.1.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "product": { "name": "alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "product_id": "alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-devel@1.1.1w-3.2.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "product": { "name": "alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "product_id": "alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-devel@1.1.1w-3.3.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64", "product": { "name": "alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64", "product_id": "alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-libs@1.1.1w-3.3.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "product": { "name": "alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "product_id": "alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-libs@1.1.1w-3.2.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } }, { "category": "product_version", "name": "alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "product": { "name": "alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "product_id": "alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/alt-openssl11-libs@1.1.1w-3.1.el7?arch=x86_64&epoch=1&os_name=centos&os_version=7" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-1:1.1.1w-3.3.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-1:1.1.1w-3.3.el7.x86_64" }, "product_reference": "alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-1:1.1.1w-3.1.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-1:1.1.1w-3.1.el7.x86_64" }, "product_reference": "alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-1:1.1.1w-3.2.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-1:1.1.1w-3.2.el7.x86_64" }, "product_reference": "alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64" }, "product_reference": "alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64" }, "product_reference": "alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64" }, "product_reference": "alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64" }, "product_reference": "alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64" }, "product_reference": "alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64" }, "product_reference": "alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "relates_to_product_reference": "CentOS-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2018-16395", "notes": [ { "category": "description", "text": "An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "CentOS-7:alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els-lang/cve/CVE-2018-16395" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html" }, { "category": "external", "summary": "http://www.securitytracker.com/id/1042105", "url": "http://www.securitytracker.com/id/1042105" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2018:3729", "url": "https://access.redhat.com/errata/RHSA-2018:3729" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2018:3730", "url": "https://access.redhat.com/errata/RHSA-2018:3730" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2018:3731", "url": "https://access.redhat.com/errata/RHSA-2018:3731" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2018:3738", "url": "https://access.redhat.com/errata/RHSA-2018:3738" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2019:1948", "url": "https://access.redhat.com/errata/RHSA-2019:1948" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2019:2565", "url": "https://access.redhat.com/errata/RHSA-2019:2565" }, { "category": "external", "summary": "https://hackerone.com/reports/387250", "url": "https://hackerone.com/reports/387250" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html", "url": "https://lists.debian.org/debian-lts-announce/2018/10/msg00020.html" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20190221-0002/", "url": "https://security.netapp.com/advisory/ntap-20190221-0002/" }, { "category": "external", "summary": "https://usn.ubuntu.com/3808-1/", "url": "https://usn.ubuntu.com/3808-1/" }, { "category": "external", "summary": "https://www.debian.org/security/2018/dsa-4332", "url": "https://www.debian.org/security/2018/dsa-4332" }, { "category": "external", "summary": "https://www.oracle.com/security-alerts/cpujan2020.html", "url": "https://www.oracle.com/security-alerts/cpujan2020.html" }, { "category": "external", "summary": "https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/", "url": "https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/" }, { "category": "external", "summary": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/", "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/" }, { "category": "external", "summary": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/", "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/" }, { "category": "external", "summary": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/", "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/" }, { "category": "external", "summary": "https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/", "url": "https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/" } ], "release_date": "2018-11-16T18:29:00Z", "scores": [ { "cvss_v2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0" }, "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" }, "products": [ "CentOS-7:alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Critical" }, { "category": "impact", "date": "2026-06-12T13:13:09.678736Z", "details": "Not affected: CVE-2018-16395 targets Ruby’s OpenSSL extension (the OpenSSL::X509::Name == comparison) in specific Ruby interpreter versions, not the upstream OpenSSL 1.1.1 library. Vendors remediated this by updating Ruby packages (e.g., ruby2.x/ruby-openssl), while the standalone openssl package was not implicated. Therefore, an environment evaluated solely against OpenSSL 1.1.1 is outside this CVE’s scope.", "product_ids": [ "CentOS-7:alt-openssl11-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-devel-1:1.1.1w-3.3.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.1.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.2.el7.x86_64", "CentOS-7:alt-openssl11-libs-1:1.1.1w-3.3.el7.x86_64" ] } ] } ] }