Hi, > > From a security point of view I don't think it is a good idea to hard code > > any > > assumptions about the layout of the vars volume. > Do you mean I cannot assume the layout of VarStore? > At least in Ovmf the VarStore.fdf.inc defines the layout of VarStore like > below.
What prevents an attacker from creating a varstore with a different layout? Place the variables at the end of the file, which isn't measured (because you assume it is the spare part), then being able to change variables without the guest noticing? take care, Gerd -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#79977): https://edk2.groups.io/g/devel/message/79977 Mute This Topic: https://groups.io/mt/85242567/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
