CVE Vulnerabilities

CVE-2021-20208

Incorrect Privilege Assignment

Published: Apr 19, 2021 | Modified: Nov 21, 2024
CVSS 3.x
6.1
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
CVSS 2.x
4.9 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:N
RedHat/V2
RedHat/V3
6.1 MODERATE
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
Ubuntu
LOW

A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity.

Weakness

A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Affected Software

Name Vendor Start Version End Version
Cifs-utils Samba 4.0 (including) 6.13 (excluding)
Cifs-utils Ubuntu bionic *
Cifs-utils Ubuntu esm-infra-legacy/trusty *
Cifs-utils Ubuntu esm-infra/xenial *
Cifs-utils Ubuntu focal *
Cifs-utils Ubuntu groovy *
Cifs-utils Ubuntu hirsute *
Cifs-utils Ubuntu precise/esm *
Cifs-utils Ubuntu trusty *
Cifs-utils Ubuntu trusty/esm *
Cifs-utils Ubuntu upstream *
Cifs-utils Ubuntu xenial *

Potential Mitigations

References