Medium severity · published Apr 19, 2021
CVE-2021-20208
A flaw was found in cifs-utils in versions before 6.13
6.1
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CI
Cifs-utils · Samba
4.0 before 6.13 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34; 35 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20208
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20208
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1921116
Issue Tracking
https://bugzilla.samba.org/show_bug.cgi?id=14651
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
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