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-vulnerability
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/NASM-out-of-bounds-memory-reading-via-expand-mmac-params-32722