Vigil@nce - Xen: privilege escalation via Descriptor Table Limit
December 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: XenServer, Fedora, openSUSE Leap, SUSE Linux
Enterprise Desktop, SLES, Xen.
Severity: 2/4.
Consequences: administrator access/rights, privileged
access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 31/10/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can bypass restrictions via
Descriptor Table Limit of Xen, in order to escalate his privileges
on the host system.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Xen-privilege-escalation-via-Descriptor-Table-Limit-30758