CVE-2021-45100

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.
Configurations

Configuration 1 (hide)

AND
cpe:2.3:a:ksmbd_project:ksmbd:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

10 Jan 2022, 14:10

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20220107-0001/ -

22 Dec 2021, 13:01

Type Values Removed Values Added
References (MISC) https://github.com/cifsd-team/ksmbd/pull/551 - (MISC) https://github.com/cifsd-team/ksmbd/pull/551 - Patch, Third Party Advisory
References (MISC) https://github.com/cifsd-team/ksmbd/issues/550 - (MISC) https://github.com/cifsd-team/ksmbd/issues/550 - Third Party Advisory
References (MISC) https://marc.info/?l=linux-kernel&m=163961726017023&w=2 - (MISC) https://marc.info/?l=linux-kernel&m=163961726017023&w=2 - Third Party Advisory
CVSS v2 : unknown
v3 : unknown
v2 : 5.0
v3 : 7.5
CWE CWE-319
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:a:ksmbd_project:ksmbd:*:*:*:*:*:*:*:*

16 Dec 2021, 05:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-12-16 05:15

Updated : 2022-01-10 14:10


NVD link : CVE-2021-45100

Mitre link : CVE-2021-45100


JSON object : View

Products Affected

linux

  • linux_kernel

ksmbd_project

  • ksmbd
CWE
CWE-319

Cleartext Transmission of Sensitive Information