Vigil@nce - Xen: information disclosure via a side channel
March 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Xen.
Consequences: data reading.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 11/03/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can bypass the virtual memory barriers via a side channel in Xen, in order to get sensitive information from the host system or others guests.
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