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CVE-2019-3870 Details

Description

A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2. During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870	CVE	Issue TrackingThird Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=13834	CVE	ExploitIssue TrackingPatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/	CVE
https://support.f5.com/csp/article/K20804356	CVE	Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-3870.html	CVE	MitigationPatchVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_15	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870	[email protected]	Issue TrackingThird Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=13834	[email protected]	ExploitIssue TrackingPatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/	[email protected]
https://support.f5.com/csp/article/K20804356	[email protected]	Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-3870.html	[email protected]	MitigationPatchVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_15	[email protected]	Third Party Advisory

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-276	Incorrect Default Permissions	[email protected]
CWE-276	Incorrect Default Permissions	[email protected]

Affected Products

Product	Versions
samba samba	>= 4.9.0, < 4.9.6 >= 4.10.0, < 4.10.2
CPE cpe:2.3:a:samba:samba:::::::: Remediation No remediation found in references.
fedoraproject fedora	29 30
CPE cpe:2.3:o:fedoraproject:fedora:29:::::::* cpe:2.3:o:fedoraproject:fedora:30:::::::* Remediation No remediation found in references.
synology directory server	All versions
CPE cpe:2.3:a:synology:directory_server:-:::::::* Remediation No remediation found in references.
synology router manager	1.2
CPE cpe:2.3:a:synology:router_manager:1.2:::::::* Remediation No remediation found in references.
synology diskstation manager	5.2 6.1 6.2
CPE cpe:2.3:o:synology:diskstation_manager:5.2:::::::* cpe:2.3:o:synology:diskstation_manager:6.1:::::::* cpe:2.3:o:synology:diskstation_manager:6.2:::::::* Remediation No remediation found in references.
synology skynas firmware	All versions
CPE cpe:2.3:o:synology:skynas_firmware:-:::::::* Remediation No remediation found in references.
synology skynas	All versions
CPE cpe:2.3:h:synology:skynas:-:::::::* Remediation No remediation found in references.
synology vs960hd firmware	< 2.3.6-1720
CPE cpe:2.3:o:synology:vs960hd_firmware:::::::: Remediation No remediation found in references.
synology vs960hd	All versions
CPE cpe:2.3:h:synology:vs960hd:-:::::::* Remediation No remediation found in references.

Change History

18 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jan 14, 2025	CPE Deprecation Remap	[email protected]
Jan 14, 2025	CPE Deprecation Remap	[email protected]
Jan 14, 2025	CPE Deprecation Remap	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Apr 19, 2022	Modified Analysis	[email protected]
Aug 17, 2021	CPE Deprecation Remap	[email protected]
Dec 4, 2020	CVE Modified	[email protected]
Oct 16, 2020	Modified Analysis	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
May 27, 2019	CVE Modified	[email protected]
May 15, 2019	CVE Modified	[email protected]
Apr 16, 2019	Modified Analysis	[email protected]
Apr 16, 2019	CVE Modified	[email protected]
Apr 15, 2019	CVE Modified	[email protected]
Apr 10, 2019	Initial Analysis	[email protected]

CVE-2019-3870 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

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CPE

Remediation

CPE

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Change History

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