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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.

Severity: 1/4.

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.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Xen-information-disclosure-via-Uncleaned-ARM-Cache-34592


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