News
Vigil@nce - Xen: privilege escalation via Steal_page Page_struct Access Discipline
May 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerability-database-and-alert
SYNTHESIS OF THE VULNERABILITY
Impacted products: XenServer, Fedora, Xen.
Severity: 2/4.
Consequences: administrator access/rights, privileged
access/rights, denial of service on server.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 05/03/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can bypass restrictions via
Steal_page Page_struct Access Discipline of Xen, in order to
escalate his privileges on the host system.
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