Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2021-20208

medium Nessus Plugin ID 223689

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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. (CVE-2021-20208)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2021-20208

Plugin Details

Severity: Medium

ID: 223689

File Name: unpatched_CVE_2021_20208.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/3/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2021-20208

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:cifs-utils-devel, p-cpe:/a:centos:centos:pam_cifscreds, cpe:/o:redhat:enterprise_linux:7, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:cifs-utils, p-cpe:/a:redhat:enterprise_linux:pam_cifscreds, p-cpe:/a:redhat:enterprise_linux:cifs-utils-devel, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:cifs-utils

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 4/19/2021

Reference Information

CVE: CVE-2021-20208