{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for samba is now available for Red Hat Gluster Storage 3.2 for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": "Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.\n\nSecurity Fix(es):\n\n* A race condition was found in samba server. A malicious samba client could use this flaw to access files and directories, in areas of the server file system not exported under the share definitions. (CVE-2017-2619)\n\n* A flaw was found in the way Samba handled dangling symlinks. An authenticated malicious Samba client could use this flaw to cause the smbd daemon to enter an infinite loop and use an excessive amount of CPU and memory. (CVE-2017-9461)\n\nRed Hat would like to thank the Samba project for reporting CVE-2017-2619. Upstream acknowledges Jann Horn (Google) as the original reporter of CVE-2017-2619.", "title": "Details" }, { "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 Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2017:2338", "url": "https://access.redhat.com/errata/RHSA-2017:2338" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "1429472", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1429472" }, { "category": "external", "summary": "1459464", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1459464" }, { "category": "external", "summary": "1465528", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1465528" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_2338.json" } ], "title": "Red Hat Security Advisory: samba security update", "tracking": { "current_release_date": "2026-06-27T04:24:02+00:00", "generator": { "date": "2026-06-27T04:24:02+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.2.6" } }, "id": "RHSA-2017:2338", "initial_release_date": "2017-08-01T07:46:05+00:00", "revision_history": [ { "date": "2017-08-01T07:46:05+00:00", "number": "1", "summary": "Initial version" }, { "date": "2017-08-01T07:46:05+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-27T04:24:02+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { 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"full_product_name": { "name": "samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64 as a component of Red Hat Gluster 3.2 Samba on RHEL-7", "product_id": "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" }, "product_reference": "samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64", "relates_to_product_reference": "7Server-RH-Gluster-3.2-Samba" } ] }, "vulnerabilities": [ { "acknowledgments": [ { "names": [ "the Samba project" ] }, { "names": [ "Jann Horn" ], "organization": "Google", "summary": "Acknowledged by upstream." } ], "cve": "CVE-2017-2619", "cwe": { "id": "CWE-362", "name": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')" }, "discovery_date": "2017-02-28T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1429472" } ], "notes": [ { "category": "description", "text": "A race condition was found in samba server. A malicious samba client could use this flaw to access files and directories in areas of the server file system not exported under the share definitions.", "title": "Vulnerability description" }, { "category": "summary", "text": "samba: symlink race permits opening files outside share directory", "title": "Vulnerability summary" }, { "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": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-0:4.6.3-4.el7rhgs.x86_64", 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"7Server-RH-Gluster-3.2-Samba:samba-pidl-0:4.6.3-4.el7rhgs.noarch", "7Server-RH-Gluster-3.2-Samba:samba-python-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-vfs-glusterfs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-clients-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-krb5-locator-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2017-2619" }, { "category": "external", "summary": "RHBZ#1429472", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1429472" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2017-2619", "url": "https://www.cve.org/CVERecord?id=CVE-2017-2619" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-2619", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2619" }, { "category": "external", "summary": "https://www.samba.org/samba/security/CVE-2017-2619.html", "url": "https://www.samba.org/samba/security/CVE-2017-2619.html" } ], "release_date": "2017-03-23T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2017-08-01T07:46:05+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing this update, the smb service will be restarted automatically.", "product_ids": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", 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"category": "workaround", "details": "Add the parameter:\n\nunix extensions = no\n\nto the [global] section of your smb.conf and restart smbd. This prevents SMB1 clients from creating symlinks on the exported file system using SMB1.\n\nHowever, if the same region of the file system is also exported using NFS, NFS clients can create symlinks that potentially can also hit the race condition. For non-patched versions of Samba we recommend only exporting areas of the file system by either SMB or NFS, not both.", "product_ids": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-0:4.6.3-4.el7rhgs.src", "7Server-RH-Gluster-3.2-Samba:samba-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-client-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-client-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-common-0:4.6.3-4.el7rhgs.noarch", "7Server-RH-Gluster-3.2-Samba:samba-common-libs-0:4.6.3-4.el7rhgs.x86_64", 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"7Server-RH-Gluster-3.2-Samba:samba-pidl-0:4.6.3-4.el7rhgs.noarch", "7Server-RH-Gluster-3.2-Samba:samba-python-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-vfs-glusterfs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-clients-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-krb5-locator-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "samba: symlink race permits opening files outside share directory" }, { "cve": "CVE-2017-9461", "cwe": { "id": "CWE-835", "name": "Loop with Unreachable Exit Condition ('Infinite Loop')" }, "discovery_date": "2017-06-06T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1459464" } ], "notes": [ { "category": "description", "text": "A flaw was found in the way Samba handled dangling symlinks. An authenticated malicious Samba client could use this flaw to cause the smbd daemon to enter an infinite loop and use an excessive amount of CPU and memory.", "title": "Vulnerability description" }, { "category": "summary", "text": "samba: fd_open_atomic infinite loop due to wrong handling of dangling symlinks", "title": "Vulnerability summary" }, { "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": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-0:4.6.3-4.el7rhgs.x86_64", 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"7Server-RH-Gluster-3.2-Samba:samba-pidl-0:4.6.3-4.el7rhgs.noarch", "7Server-RH-Gluster-3.2-Samba:samba-python-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-vfs-glusterfs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-clients-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-krb5-locator-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2017-9461" }, { "category": "external", "summary": "RHBZ#1459464", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1459464" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2017-9461", "url": "https://www.cve.org/CVERecord?id=CVE-2017-9461" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-9461", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9461" } ], "release_date": "2017-02-16T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2017-08-01T07:46:05+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing this update, the smb service will be restarted automatically.", "product_ids": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-0:4.6.3-4.el7rhgs.x86_64", 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"7Server-RH-Gluster-3.2-Samba:samba-pidl-0:4.6.3-4.el7rhgs.noarch", "7Server-RH-Gluster-3.2-Samba:samba-python-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-test-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-vfs-glusterfs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-clients-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-krb5-locator-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2017:2338" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.0" }, "products": [ "7Server-RH-Gluster-3.2-Samba:ctdb-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:ctdb-tests-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libsmbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:libwbclient-devel-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-0:4.6.3-4.el7rhgs.src", "7Server-RH-Gluster-3.2-Samba:samba-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-client-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-client-libs-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-common-0:4.6.3-4.el7rhgs.noarch", 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"7Server-RH-Gluster-3.2-Samba:samba-winbind-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-clients-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-krb5-locator-0:4.6.3-4.el7rhgs.x86_64", "7Server-RH-Gluster-3.2-Samba:samba-winbind-modules-0:4.6.3-4.el7rhgs.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Low" } ], "title": "samba: fd_open_atomic infinite loop due to wrong handling of dangling symlinks" } ] }