Vigil@nce - Linux kernel: privilege escalation via efivar_ssdt_load
September 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
– Impacted products: Fedora, Linux, openSUSE Leap, RHEL, SUSE Linux
Enterprise Desktop, SLES, Ubuntu.
– Severity: 2/4.
– Consequences: administrator access/rights, privileged
access/rights.
– Provenance: user shell.
– Confidence: confirmed by the editor (5/5).
– Creation date: 14/07/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass restrictions via efivar_ssdt_load of the
Linux kernel, in order to escalate his privileges.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-privilege-escalation-via-efivar-ssdt-load-32801