{ "document": { "aggregate_severity": { "text": "Medium" }, "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/centos-stream8els/vex/2021/cve-2021-31879-els_os-centos-stream8els.json" } ], "tracking": { "current_release_date": "2026-04-24T10:36:35Z", "generator": { "date": "2026-04-24T10:36:35Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2021-31879-ELS_OS-CENTOS-STREAM8ELS", "initial_release_date": "2021-04-29T05:15:00Z", "revision_history": [ { "date": "2021-04-29T05:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-20T15:45:44Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-24T10:36:35Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2021-31879" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8", "product": { "name": "Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" }, { "branches": [ { "category": "product_version", "name": "wget-0:1.19.5-11.el8.x86_64", "product": { "name": "wget-0:1.19.5-11.el8.x86_64", "product_id": "wget-0:1.19.5-11.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/wget@1.19.5-11.el8?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "product": { "name": "wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "product_id": "wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/wget@1.19.5-11.el8.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.19.5-11.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:wget-0:1.19.5-11.el8.tuxcare.els1.x86_64" }, "product_reference": "wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.19.5-11.el8.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:wget-0:1.19.5-11.el8.x86_64" }, "product_reference": "wget-0:1.19.5-11.el8.x86_64", "relates_to_product_reference": "CentOS-Stream-8" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-31879", "cwe": { "id": "CWE-601", "name": "URL Redirection to Untrusted Site ('Open Redirect')" }, "notes": [ { "category": "description", "text": "GNU Wget through 1.21.1 does not omit the Authorization header upon a redirect to a different origin, a related issue to CVE-2018-1000007.", "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": { "known_affected": [ "CentOS-Stream-8:wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:wget-0:1.19.5-11.el8.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2021-31879" }, { "category": "external", "summary": "https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.html", "url": "https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.html" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20210618-0002/", "url": "https://security.netapp.com/advisory/ntap-20210618-0002/" } ], "release_date": "2021-04-29T05:15:00Z", "remediations": [ { "category": "no_fix_planned", "details": "This is a client-side credential exposure that only occurs when wget is invoked with credentials (Authorization header present) and follows an HTTP redirect to a different origin; unauthenticated downloads and direct, no-redirect fetches are unaffected because wget does not send Authorization by default. The impact is limited to potential leakage of that header (no code execution, privilege escalation, or availability effect), and exploitation requires user action to run wget against a redirecting endpoint. In centrally managed server/VM environments where scripted fetches target fixed, trusted endpoints and avoid cross-origin redirects, the practical exploitability is low, so this can be safely deprioritized.", "product_ids": [ "CentOS-Stream-8:wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:wget-0:1.19.5-11.el8.x86_64" ] } ], "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0" }, "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1" }, "products": [ "CentOS-Stream-8:wget-0:1.19.5-11.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:wget-0:1.19.5-11.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }