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Vigil@nce - Xen: privilege escalation via oxenstored ownership
February 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: XenServer, Debian, Fedora, Xen.
Severity: 2/4.
Consequences: administrator access/rights, privileged access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 15/12/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can bypass restrictions via oxenstored of Xen, in order to escalate his privileges on the host system.
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