Vigil@nce - OVMF: buffer overflow via DxeImageVerificationHandler
November 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: openSUSE Leap, SUSE Linux Enterprise Desktop,
SLES.
Severity: 2/4.
Consequences: administrator access/rights, privileged
access/rights, user access/rights, denial of service on server,
denial of service on service, denial of service on client.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 21/09/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a buffer overflow via
DxeImageVerificationHandler() of OVMF, in order to trigger a
denial of service, and possibly to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/OVMF-buffer-overflow-via-DxeImageVerificationHandler-33377