Vigil@nce - Xen: denial of service via the L3/L4 page table management
March 2018 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A privileged attacker in a guest system can make interrupt
processing too long by requesting Xen to change the L3/L4 page
tables, in order to trigger a denial of service.
Impacted products: Debian, Fedora, Xen.
Severity: 1/4.
Creation date: 27/02/2018.
DESCRIPTION OF THE VULNERABILITY
A privileged attacker in a guest system can make interrupt
processing too long by requesting Xen to change the L3/L4 page
tables, in order to trigger a denial of service.
A detailed analysis was not performed for this bulletin.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Xen-denial-of-service-via-the-L3-L4-page-table-management-25385