Vigil@nce - OpenBSD: denial of service via PROT_NONE MAP_SHARED
October 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: OpenBSD.
Consequences: denial of service on server.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 06/10/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a fatal error via PROT_NONE MAP_SHARED of OpenBSD, in order to trigger a denial of service.
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