CVE-2019-3870
First published: Tue Apr 09 2019(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 DiskStation Manager | =5.2 | |
| Synology DiskStation Manager | =6.1 | |
| Synology DiskStation Manager | =6.2 | |
| Synology Router Manager | =1.2 | |
| Synology Skynas Firmware | ||
| Synology Skynas | ||
| Synology Vs960hd Firmware | <2.3.6-1720 | |
| Synology Vs960hd |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870
- https://bugzilla.samba.org/show_bug.cgi?id=13834
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/
- https://support.f5.com/csp/article/K20804356
- https://www.samba.org/samba/security/CVE-2019-3870.html
- https://www.synology.com/security/advisory/Synology_SA_19_15
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/
Frequently Asked Questions
What is the vulnerability ID of this Samba vulnerability?
The vulnerability ID of this Samba vulnerability is CVE-2019-3870.
What is the severity of CVE-2019-3870?
The severity of CVE-2019-3870 is medium (CVSS score: 6.1).
Which versions of Samba are affected by CVE-2019-3870?
Samba versions 4.9 to 4.9.6 and 4.10 to 4.10.2 are affected by CVE-2019-3870.
How can I fix the CVE-2019-3870 vulnerability?
To fix the CVE-2019-3870 vulnerability, you should update Samba to version 4.9.6 or 4.10.2 or later.
Where can I find more information about CVE-2019-3870?
More information about CVE-2019-3870 can be found in the following references: [link1](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870), [link2](https://bugzilla.samba.org/show_bug.cgi?id=13834), [link3](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/).
- agent/type
- agent/remedy
- agent/last-modified-date
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/weakness
- agent/severity
- agent/author
- agent/references
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- collector/mitre-cve
- source/MITRE
- vendor/samba
- canonical/samba samba
- version/samba samba/4.9.0
- version/samba samba/4.10.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/29
- version/fedoraproject fedora/30
- vendor/synology
- canonical/synology directory server
- canonical/synology diskstation manager
- version/synology diskstation manager/5.2
- version/synology diskstation manager/6.1
- version/synology diskstation manager/6.2
- canonical/synology router manager
- version/synology router manager/1.2
- canonical/synology skynas firmware
- canonical/synology skynas
- canonical/synology vs960hd firmware
- canonical/synology vs960hd