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Vigil@nce - QEMU: use after free via mptsas_free_request

April 2021 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: QEMU.

Severity: 2/4.

Consequences: administrator access/rights, denial of service on server, denial of service on service.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 05/02/2021.

DESCRIPTION OF THE VULNERABILITY

An attacker, inside a guest system, can force the usage of a freed memory area via mptsas_free_request() of QEMU, in order to trigger a denial of service, and possibly to run code on the host system.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/...




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