Re: reg: Host Name Validation with Wild Card Certificate

["Sivaraman Nainar" <sivaramann@amiindia.co.in>]

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Hello Jiaxin:

Would you please provide your comments on the below Query.

-Siva
From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of Sivaraman Nainar
Sent: Friday, March 6, 2020 11:37 AM
To: To:; Wu, Jiaxin; Fu, Siyuan
Cc: Madhan B. Santharam; Arun Subramanian B; Bhuvaneshwari M R; Ramesh R.; Srini Narayana
Subject: [edk2-devel] reg: Host Name Validation with Wild Card Certificate

Hello all:

Need a clarification on the Host Name support added in the HTTP Boot.

When certificates are generated with the Wild Card in the SAN  the host name validation is getting failed with the below error codes.
Ex: DNS Name=*.ami.internal-test.com

TlsDoHandshake SSL_HANDSHAKE_ERROR State=0x4 SSL_ERROR_SSL
TlsDoHandshake ERROR 0x1416F086=L14:F16F:R86
Http Request failed. Code=Aborted

If the Host verify flag is changed from
HttpInstance->TlsConfigData.VerifyHost.Flags    = EFI_TLS_VERIFY_FLAG_NO_WILDCARDS;
To
HttpInstance->TlsConfigData.VerifyHost.Flags    =  EFI_TLS_VERIFY_FLAG_NONE;

Then the Http request can pass.

Is the host Name support strictly not allowing Wild card support? In this case do we need to have multiple Certiricate to have each URL with exact Host Name?

Thanks
Siva

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