CVE Database›Document archive›CVE-2019-3880

CVE-2019-3880

samba: save registry file outside share as unprivileged user

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Severity

Moderate

Red Hat Product Security

4.2

CVSS 3.0

Review impact separately from score.

Published · April 9, 2019

Updated · November 2, 2026

Description

A flaw was found in the way samba implemented an RPC endpoint emulating the Windows registry service API. An unprivileged attacker could use this flaw to create a new registry hive file anywhere they have unix permissions which could lead to creation of a new file in the Samba share.

Statement

This issue affects the version of samba shipped with Red Hat Gluster Storage 3, as it contains the vulnerable functionality.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Either turn off SMB1 by setting the global parameter: 'min protocol = SMB2' or if SMB1 is required turn off unix extensions by setting the global parameter: 'unix extensions = no' in the smb.conf file.

CVSS / CWE

CVSS 3.0 · 4.2
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory