Platform firmware included insecure handling of certain UEFI variables
This update improves the security of the firmware and the ability to enable secure configuration.
Insecure handling of UEFI variables in Intel® Xeon® Scalable processors, Intel® Xeon® Processor E5 v4 Family, Intel® Xeon® Processor E5 v3 Family system firmware potentially allows a local attacker to disable security features of the platform. Intel reference firmware implemented setup options to enable/disable security features. These options are used in the validation environments to relax security when running tests in a lab environment. If used by malware on a production system, these features may result in elevation of privilege by disabling protection of the system configuration or denial of service.
• Medium (6.1) CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:H
Intel® Xeon® Scalable processors, Intel® Xeon® Processor E5 v4 Family, Intel® Xeon® Processor E5 v3 Family
A reference fix was provided in the pre-production Intel® Xeon® Scalable processors Refresh releases and Intel recommends that end-users contact their system manufacturers for updated system firmware.
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