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Vigil@nce - QEMU: integer overflow via oss_write

October 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...

SYNTHESIS OF THE VULNERABILITY

Impacted products: QEMU, Ubuntu.

Severity: 2/4.

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

Provenance: user shell.

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

Creation date: 20/08/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker, inside a guest system, can trigger an integer overflow via oss_write() 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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