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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 18 products from ksmbd_project, from linux, from netapp and 15 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2021-12-16T05:15:08.827
2024-11-21T06:31:57.400
Modified
CVSSv3.1: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | ksmbd_project | ksmbd | ≤ 3.4.2 | Yes |
| Operating System | linux | linux_kernel | ≤ 5.15.8 | No |
| Operating System | netapp | h410c_firmware | - | Yes |
| Hardware | netapp | h410c | - | No |
| Operating System | netapp | h300s_firmware | - | Yes |
| Hardware | netapp | h300s | - | No |
| Operating System | netapp | h500s_firmware | - | Yes |
| Hardware | netapp | h500s | - | No |
| Operating System | netapp | h700s_firmware | - | Yes |
| Hardware | netapp | h700s | - | No |
| Operating System | netapp | h300e_firmware | - | Yes |
| Hardware | netapp | h300e | - | No |
| Operating System | netapp | h500e_firmware | - | Yes |
| Hardware | netapp | h500e | - | No |
| Operating System | netapp | h700e_firmware | - | Yes |
| Hardware | netapp | h700e | - | No |
| Operating System | netapp | h410s_firmware | - | Yes |
| Hardware | netapp | h410s | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For ksmbd_project's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.