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Vigil@nce - OpenBSD: denial of service via PTY Reprint Delays

August 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability

SYNTHESIS OF THE VULNERABILITY

Impacted products: OpenBSD.

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: 22/07/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can trigger a fatal error via PTY Reprint Delays of
OpenBSD, in order to trigger a denial of service.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/OpenBSD-denial-of-service-via-PTY-Reprint-Delays-32896


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