CVE-2021-20208
MEDIUMcifs-utils < 6.13 - Unauthenticated Kerberos Credential Exposure via Container Mount
Title source: llmDescription
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.
References (5)
Core 5
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1921116
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://bugzilla.samba.org/show_bug.cgi?id=14651
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
Scores
CVSS v3
6.1
EPSS
0.0037
EPSS Percentile
59.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
Details
CWE
CWE-269
CWE-266
Status
published
Products (6)
fedoraproject/fedora
33
fedoraproject/fedora
34
fedoraproject/fedora
35
redhat/enterprise_linux
7.0
redhat/enterprise_linux
8.0
samba/cifs-utils
4.0 - 6.13
Published
Apr 19, 2021
Tracked Since
Feb 18, 2026