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Vigil@nce - NASM: out-of-bounds memory reading via expand_mmac_params

July 2020 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

Impacted products: openSUSE Leap, SLES.

Severity: 1/4.

Consequences: data reading, denial of service on service, denial of service on client.

Provenance: document.

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

Creation date: 07/07/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can force a read at an invalid address via expand_mmac_params() of NASM, in order to trigger a denial of service, or to obtain sensitive information.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

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




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