Incorrect default permissions in Samba - CVE-2019-3870
Published: April 8, 2019
Vulnerability identifier: #VU18148
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-3870
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for files and folders (e.g. 0666) within installation location that are set by the application during the creation of a new Samba AD DC. A local user with access to the system can view contents of files and directories or modify them.
Note, such application behavior can occur on some upgraded Samba versions.
Affected software
Samba
Fedora
samba
Fedora
samba
How to mitigate CVE-2019-3870
Install updates from vendor's website.
Samba - addressed in versions 4.9.6, 4.10.2
samba - addressed in versions 4.9.6-0.fc29, 4.10.2-0.fc30
samba - addressed in versions 4.9.6-0.fc29, 4.10.2-0.fc30