Security bypass in Windows and Windows Server - CVE-2017-8493
Published: June 13, 2017
Vulnerability identifier: #VU7043
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-8493
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error when enforcing case sensitivity for certain variable checks. A remote attacker can run a specially crafted application to set variables that are either read-only or require authentication and bypass Unified Extensible Firmware Interface (UEFI) variable security in Windows.
Successful exploitation of the vulnerability may result in access to the system.
The weakness exists due to an error when enforcing case sensitivity for certain variable checks. A remote attacker can run a specially crafted application to set variables that are either read-only or require authentication and bypass Unified Extensible Firmware Interface (UEFI) variable security in Windows.
Successful exploitation of the vulnerability may result in access to the system.
How to mitigate CVE-2017-8493
Install update from vendor's website.