HP Blatantly Lying about Secure Boot 2023 CA Support

Posted by Amomynou5@reddit | sysadmin | View on Reddit | 36 comments

We've just started deploying the new Secure Boot certs and just found out that the HP EliteBook x360 1030 G4 is NOT supported, contrary to HP's claims.

This model is clearly listed on the supported models page, with the minimum BIOS version of 01.33.00. However, when you check the History.txt in the associated softpaq (sp161775), there's no mention of the 2023 certs at all. Applying the BIOS update also does not show an "SBKPFV3" string in the SMBIOS version field, which HP stated is a requirement for the certs to apply.

If you try to deploy the certs anyway (via the AvailableUpdates regkey), you'd get an error 1802 ("The Secure Boot update 3P UEFI CA 2023 (DB) was blocked due to a known firmware issue on the device."). Manually triggering the Scheduled Task gives an error 1797 ("The Secure Boot update failed as the Windows UEFI CA 2023 certificate is not present in Db").

Another issue I've come across is that many of the BIOS updates do not actually copy the new certs to the dbDefault (EliteDesk 800 G5/G6, EliteBook 840 G6 etc), but my understanding is that the BIOS update is supposed to load the cert into the default dbs - yet this has not been my experience.

Furthermore, HP have stated:

For HP Commercial PCs that do not receive a BIOS update because they have reached their End of Service Life (EOSL) date (including select 2018 products and all HP PCs released 2017 and earlier), HP is developing a solution to allow you to update your system manually.

Then they go on to say:

HP might update this page with additional instructions about how to update the Secure Boot Certificates on these systems

June is only a couple of weeks away now, so I doubt whether HP will ever update the page with additional instructions for older machines...

Anyone else come across such lies and anomalies? What are your plans to address these?

Unfortunately, a good chunk of our machines consists of the G4 and other models released around the same time, and the current pricing of laptops means that we don't have the luxury of being able to replace them ASAP.

With the certs are expiring next month, and with AI-driven zero-days on the rise, I feel like it won't be long before we see a exploit worse than BlackLotus.