revocations.efi to deliver new sbat level requirements as well as updated bootmgr SkuSiPolicy #6
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While this works, I should admit that this is a bit of a strange binary and I wouldn't be surprised if there was a better way. I did run into the fact that the PE parsing in shim does not handle longer section names. Since that could be an attack surface, it probably makes sense to keep that code as simple as it can be. |
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This contains a dangerous latest SkuSiPolicy version. While this is handy for testing, we may or may not want to ship this here. Comments are welcome. |
This covers delivering updates to SBAT_LEVEL without the need to create and sign a new shim Signed-off-by: Jan Setje-Eilers <Jan.SetjeEilers@oracle.com>
Signed-off-by: Jan Setje-Eilers <Jan.SetjeEilers@oracle.com>
This is also included in shim builtin latest revocation, but it revokes shim binaries impacted by: * CVE-2023-40547 * CVE-2023-40546 * CVE-2023-40548 * CVE-2023-40549 * CVE-2023-40550 * CVE-2023-40551 And also revokes GRUB binaries impacted by: * CVE-2023-4692 * CVE-2023-4693
When the term previous was introduced for revocations to be automatically applied there was a hope that everytime a new revocation was built into shim, the previous revocation could be applied automatically. Further experience has shown the real world to be more complex than that. The automatic payload will realistically contain a set of revocations governed by both the cadence at which a distro's customer base updates as well as the severity of the issue being revoked. This is not a functional change. Signed-off-by: Jan Setje-Eilers <Jan.SetjeEilers@oracle.com>
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This covers delivering updates to SBAT_LEVEL without the need
to create and sign a new shim
Signed-off-by: Jan Setje-Eilers Jan.SetjeEilers@oracle.com