CVE-2021-20208
First published: Wed Jan 27 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/cifs-utils | <6.13 | 6.13 |
| Samba Cifs-utils | >=4.0<6.13 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934912
- https://bugzilla.samba.org/show_bug.cgi?id=14651
- https://bugzilla.redhat.com/show_bug.cgi?id=1921116
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2W4HSDIWXXNQBUW5ZS37RQMLJ7THK5AS/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z4BZSJXROEFHYATAAHHRR6P3HUSMPQB3/
- 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/66WJ3SVBHCSNQZAWSGLB6FBOCFU45FFG/
Frequently Asked Questions
What is the vulnerability ID of this flaw?
The vulnerability ID of this flaw is CVE-2021-20208.
What is the severity of CVE-2021-20208?
The severity of CVE-2021-20208 is medium with a severity value of 6.1.
Which software versions are affected by CVE-2021-20208?
Versions of cifs-utils before 6.13 are affected by this vulnerability.
How can this vulnerability be fixed?
To fix this vulnerability, update cifs-utils to version 6.13 or later.
What is the highest threat from CVE-2021-20208?
The highest threat from CVE-2021-20208 is to data confidentiality and integrity.
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