{ "document": { "aggregate_severity": { "text": "High" }, "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_os/centos8.5els/vex/2019/cve-2019-18684-els_os-centos8_5els.json" } ], "tracking": { "current_release_date": "2026-04-24T16:53:12Z", "generator": { "date": "2026-04-24T16:53:12Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2019-18684-ELS_OS-CENTOS8.5ELS", "initial_release_date": "2019-11-04T16:15:00Z", "revision_history": [ { "date": "2019-11-04T16:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-20T16:53:29Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-24T16:53:12Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2019-18684" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8.5", "product": { "name": "Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8.5:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "product": { "name": "sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "product_id": "sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/sudo-devel@1.8.29-7.el8_4.1.tuxcare.els3?arch=x86_64" } } }, { "category": "product_version", "name": 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System 8.5", "product_id": "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64" }, "product_reference": "sudo-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64" }, "product_reference": "sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "relates_to_product_reference": "CentOS-8.5" } ] }, "vulnerabilities": [ { "cve": "CVE-2019-18684", "cwe": { "id": "CWE-362", "name": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')" }, "notes": [ { "category": "description", "text": "Sudo through 1.8.29 allows local users to escalate to root if they have write access to file descriptor 3 of the sudo process. This occurs because of a race condition between determining a uid, and the setresuid and openat system calls. The attacker can write \"ALL ALL=(ALL) NOPASSWD:ALL\" to /proc/#####/fd/3 at a time when Sudo is prompting for a password. NOTE: This has been disputed due to the way Linux /proc works. It has been argued that writing to /proc/#####/fd/3 would only be viable if you had permission to write to /etc/sudoers. Even with write permission to /proc/#####/fd/3, it would not help you write to /etc/sudoers", "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-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2019-18684" }, { "category": "external", "summary": "https://gist.github.com/oxagast/51171aa161074188a11d96cbef884bbd", "url": "https://gist.github.com/oxagast/51171aa161074188a11d96cbef884bbd" } ], "release_date": "2019-11-04T16:15:00Z", "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0" }, "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "details": "important", "product_ids": [ "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els1.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els2.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els3.x86_64", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.i686", "CentOS-8.5:sudo-devel-0:1.8.29-7.el8_4.1.tuxcare.els4.x86_64" ] } ] } ] }