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CVE-2021-45100 Detail

Description

The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/cifsd-team/ksmbd/issues/550 Third Party Advisory 
https://github.com/cifsd-team/ksmbd/pull/551 Patch  Third Party Advisory 
https://marc.info/?l=linux-kernel&m=163961726017023&w=2 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220107-0001/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-319 Cleartext Transmission of Sensitive Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-45100
NVD Published Date:
12/16/2021
NVD Last Modified:
03/29/2022
Source:
MITRE