Windows Security Feature Bypass in CNG Kernel-Mode Driver
CVE-2018-0902

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Cryptography Next Generation (cng) Kernel-mode Driver (cng.sys)
Vendor
CVE Published:
14 March 2018

What is CVE-2018-0902?

A Security Feature Bypass vulnerability exists in the Cryptography Next Generation (CNG) kernel-mode driver (cng.sys) within certain versions of Windows 10 and Windows Server. This vulnerability arises from improper validation and enforcement of impersonation levels in the driver, potentially allowing an authenticated user to bypass security features. The flaw specifically impacts versions such as Windows 10 Gold, 1511, 1607, 1703, and 1709, as well as Windows Server 2016 and version 1709. Mitigating steps and patches are available from Microsoft to address this issue.

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Affected Version(s)

Cryptography Next Generation (CNG) kernel-mode driver (cng.sys) Windows 10 Gold, 1511, 1607, 1703, and 1709. Windows Server 2016 and Windows Server, version 1709

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_CONFIRM
http://www.securityfocus.com/bid/103266
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1040520
vdb-entryx_refsource_SECTRACK

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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