CVE-2019-3870

EUVD-2019-13483

09.04.2019, 16:29

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.1 MEDIUM	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
redhat	CNA	6.1 MEDIUM	LOCAL	LOW	LOW	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 68%

Affected Products (NVD)

Vendor	Product	Version
samba	samba	4.9.0 ≤ 𝑥 < 4.9.6
samba	samba	4.10.0 ≤ 𝑥 < 4.10.2
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	𝑥 < 2.3.6-1720

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

samba

bookworm	2:4.17.12+dfsg-0+deb12u1 fixed
bookworm (security)	2:4.17.12+dfsg-0+deb12u1 fixed
bullseye	2:4.13.13+dfsg-1~deb11u6 fixed
bullseye (security)	2:4.13.13+dfsg-1~deb11u6 fixed
jessie	not-affected
sid	2:4.21.1+dfsg-2 fixed
stretch	not-affected
trixie	2:4.21.1+dfsg-2 fixed