CVEvulnerability
CVE-2019-3870
6.1 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2019-04-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- CVSS 3.0 ([email protected])
- 6.1 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- CVSS 2.0 ([email protected])
- 3.6 LOW — AV:L/AC:L/Au:N/C:N/I:P/A:P
- Weaknesses
- CWE-276
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.
Affected configurations
• samba samba (>= 4.9.0 < 4.9.6)
• samba samba (>= 4.10.0 < 4.10.2)
• fedoraproject fedora 29
• fedoraproject fedora 30
• synology directory server
• synology router manager 1.2
• synology diskstation manager 5.2
• synology diskstation manager 6.1
• synology diskstation manager 6.2
• synology skynas firmware
• synology vs960hd firmware (< 2.3.6-1720)
Related
Weakness · CWE (1)
- CWE-276 Incorrect Default Permissions weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870 Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=13834 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/ lists.fedoraproject.org
- https://support.f5.com/csp/article/K20804356 Third Party Advisory
- https://www.samba.org/samba/security/CVE-2019-3870.html Mitigation, Patch, Vendor Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_15 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870 Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=13834 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/ lists.fedoraproject.org
- https://support.f5.com/csp/article/K20804356 Third Party Advisory
- https://www.samba.org/samba/security/CVE-2019-3870.html Mitigation, Patch, Vendor Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_15 Third Party Advisory