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CVE-2021-20208

MEDIUMCVSS 6.1/10EPSS 0.64%

Last modified

CVE-2021-20208 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N

EPSS Probability
0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SambaCifs-Utils>= 4.0, < 6.13
RedhatEnterprise Linux7.0
RedhatEnterprise Linux8.0
FedoraprojectFedora33
FedoraprojectFedora34
FedoraprojectFedora35

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-20208?
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.
How severe is CVE-2021-20208?
CVE-2021-20208 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20208?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20208?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST