Vigil@nce - FreeBSD: out-of-bounds memory reading via bhyve pci_xhci_device_doorbell
September 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: FreeBSD.
Consequences: data reading, denial of service on server, denial of service on service.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 25/07/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via bhyve pci_xhci_device_doorbell() of FreeBSD, in order to trigger a denial of service, or to obtain sensitive information.
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