Op woensdag 3 maart 2021 om 04:47:51 UTC+1 schreef [email protected]:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > On Tue, Mar 02, 2021 at 11:17:54AM -0800, Scumbag wrote: > > > > I asked this before on Qubes > > forum(https://qubes-os.discourse.group/t/xen-exploit-migitations/2469), > but > > there were no replies so I'm hoping I'll get replies here: > > > > I saw in the Xen 4.14 release notes that Xen now supports hardware based > > Control-flow Enforcement Technology (CET) which has been introduced into > > Intels Tiger Lake and AMDs Zen3 CPUs. > > - Does Qubes support this as well? > > Yes, we do have this enabled in Qubes 4.1. > > > - And does Xen also have a softwarebased CFI? > > Not that I'm aware of. > > > - Does Xen also support ASLR now? Some years ago I read a post from > Qubes > > saying that Xen didn’t have many exploit migitations and didn’t even > > support ASLR. > > Indeed Xen doesn't have ASLR and won't have anytime soon (PV must die > first, at the very least). But it does use some other mitigations like > SMAP/SMEP. And also some of the more complex parts like instruction > emulator are integrated with fuzzy testing. > > - -- > Best Regards, > Marek Marczykowski-Górecki > Invisible Things Lab > -----BEGIN PGP SIGNATURE----- > > iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmA/Bt4ACgkQ24/THMrX > 1yye8AgAgO7t/Sr4IbK7zD40T9ArO/cesRkgwnRM36pD4NQDXaW8UvMENJt+6yK2 > HrEVOelnH9po5NF7vPf6od2wf1ndIWCouNKRIq4qeQ1DwaiaUqbL6GLKYkBOjEPg > 1qSoHCg2UAMYg6lxrqM6pHneeTAUCnlYY15SdNv6aEJeP+ufjbpZD8HK4fA+W80S > TRvhMmoK1i2Cf5rsKDgiNiPjm5tZCsvcVwwPaKBvLSyEIceYoBstJQ9mfhlBR+dp > N5LtDFt7LZYaVHwrNClvOr1oHFgaPuLQDQeOs2bVM/vdrgTMUZQO72m4Gkm2+hi3 > MZ6PTdX/OsrEHK47g3lTxmF4zwAsCA== > =7enJ > -----END PGP SIGNATURE----- > Thank you for explaining Marek! -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/97bdfdde-335c-403a-b0cf-6b9ae4009bden%40googlegroups.com.
