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.
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.
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.
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