cifs-utils up to 6.12 krb5 CIFS File System privileges assignment

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in cifs-utils up to 6.12. This impacts an unknown function of the component krb5 CIFS File System Handler. Such manipulation leads to privileges assignment. This vulnerability is traded as CVE-2021-20208. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in cifs-utils up to 6.12. It has been rated as problematic. Affected by this issue is an unknown part of the component krb5 CIFS File System Handler. The manipulation with an unknown input leads to a privileges assignment vulnerability. Using CWE to declare the problem leads to CWE-266. A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The weakness was shared 04/20/2021. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2021-20208. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 249258 (Ubuntu 14.04 LTS / 16.04 LTS : cifs-utils vulnerabilities (USN-7688-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.13 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (249258). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges assignment
CWE: CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 249258
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS : cifs-utils vulnerabilities (USN-7688-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cifs-utils 6.13

Timelineinfo

12/17/2020 🔍
04/20/2021 +123 days 🔍
04/20/2021 +0 days 🔍
08/15/2025 +1578 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-20208 (🔍)
GCVE (CVE): GCVE-0-2021-20208
GCVE (VulDB): GCVE-100-173204

Entryinfo

Created: 04/20/2021 06:51
Updated: 08/15/2025 15:17
Changes: 04/20/2021 06:51 (36), 04/23/2021 11:21 (5), 08/15/2025 15:17 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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