edk2 is vulnerable to privilege escalation. The attack is due to a logic error in MdeModulePkg in EDK II firmware, allowing an authenticated users to trigger the attack.
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index
access.redhat.com/errata/RHSA-2019:2125
access.redhat.com/security/updates/classification/#moderate
edk2-docs.gitbooks.io/security-advisory/content/authvariable-timestamp-zeroing-on-append_write.html
lists.fedoraproject.org/archives/list/[email protected]/message/4ABTDKZK2G5XP6JCO3HXMPOA2NRTIYDZ/
support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03912en_us