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CVE-2021-20208

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Date: April 19, 2021

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.

Language: C

Severity Score

Related Resources (14)

https://nvd.nist.gov/vuln/detail/CVE-2021-20208
https://bugzilla.redhat.com/show_bug.cgi?id=1921116
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
https://access.redhat.com/security/cve/CVE-2021-20208
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20208
https://security.alpinelinux.org/vuln/CVE-2021-20208
https://security-tracker.debian.org/tracker/CVE-2021-20208
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
https://bugzilla.samba.org/show_bug.cgi?id=14651
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
https://www.mend.io/vulnerability-database/CVE-2021-20208

Severity Score

Weakness Type (CWE)

Improper Privilege Management

CWE-269

Incorrect Privilege Assignment

CWE-266

Top Fix

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Upgrade to version cifs-utils-6.13

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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