Vigil@nce - Xen: information disclosure via Uncleaned ARM Cache
March 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, Xen.
Consequences: data reading.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 16/02/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can bypass access restrictions to data via Uncleaned ARM Cache of Xen, in order to obtain sensitive information on the host system.
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