{ "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/almalinux9.2esu/vex/2020/cve-2020-5291-els_os-almalinux9_2esu.json" } ], "tracking": { "current_release_date": "2026-06-25T08:25:28Z", "generator": { "date": "2026-06-25T08:25:28Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-5291-ELS_OS-ALMALINUX9.2ESU", "initial_release_date": "2020-03-31T18:15:00Z", "revision_history": [ { "date": "2020-03-31T18:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-06-18T17:31:40Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-06-25T08:25:28Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2020-5291" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.2", "product": { "name": "AlmaLinux 9.2", "product_id": "AlmaLinux-9.2", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" }, { "branches": [ { "category": "product_version", "name": "bubblewrap-0:0.4.1-6.el9.x86_64", "product": { "name": "bubblewrap-0:0.4.1-6.el9.x86_64", "product_id": "bubblewrap-0:0.4.1-6.el9.x86_64", "product_identification_helper": { "purl": "pkg:rpm/almalinux/bubblewrap@0.4.1-6.el9?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64", "product": { "name": "bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64", "product_id": "bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/bubblewrap@0.4.1-6.el9.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64" }, "product_reference": "bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "bubblewrap-0:0.4.1-6.el9.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.x86_64" }, "product_reference": "bubblewrap-0:0.4.1-6.el9.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" } ] }, "vulnerabilities": [ { "cve": "CVE-2020-5291", "cwe": { "id": "CWE-648", "name": "Incorrect Use of Privileged APIs" }, "notes": [ { "category": "description", "text": "Bubblewrap (bwrap) before version 0.4.1, if installed in setuid mode and the kernel supports unprivileged user namespaces, then the `bwrap --userns2` option can be used to make the setuid process keep running as root while being traceable. This can in turn be used to gain root permissions. Note that this only affects the combination of bubblewrap in setuid mode (which is typically used when unprivileged user namespaces are not supported) and the support of unprivileged user namespaces. Known to be affected are: * Debian testing/unstable, if unprivileged user namespaces enabled (not default) * Debian buster-backports, if unprivileged user namespaces enabled (not default) * Arch if using `linux-hardened`, if unprivileged user namespaces enabled (not default) * Centos 7 flatpak COPR, if unprivileged user namespaces enabled (not default) This has been fixed in the 0.4.1 release, and all affected users should update.", "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" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64" ], "known_affected": [ "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2020-5291" }, { "category": "external", "summary": "https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240", "url": "https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240" }, { "category": "external", "summary": "https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj", "url": "https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj" } ], "release_date": "2020-03-31T18:15:00Z", "remediations": [ { "category": "none_available", "date": "2026-06-25T07:00:55.272238Z", "details": "Affected", "product_ids": [ "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.x86_64" ] } ], "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:S/C:C/I:C/A:C", "version": "2.0" }, "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:bubblewrap-0:0.4.1-6.el9.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }