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Vigil@nce - QEMU: denial of service via VirtFS Directory Sharing
February 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, QEMU, SLES, Ubuntu.
Severity: 1/4.
Consequences: denial of service on server, denial of service on service.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 08/02/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can trigger a fatal error via VirtFS Directory Sharing of QEMU, in order to trigger a denial of service on the host system.
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