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feat!: backup flag validation #240

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merged 4 commits into from
May 28, 2024
Merged

feat!: backup flag validation #240

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d7b3962
Ensure BackupEligible flag consistency during login validation
May 25, 2024
0254b23
fix return message
May 25, 2024
e5f2d81
Ensure BackupEligible and BackupState flag consistency during login v…
May 25, 2024
3b76dbf
Merge branch 'master' into fix/ensure-backup-eligible-flag-consistency
zahraKeshtkar May 25, 2024
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5 changes: 4 additions & 1 deletion webauthn/login.go
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Original file line number Diff line number Diff line change
Expand Up @@ -283,8 +283,11 @@ func (webauthn *WebAuthn) validateLogin(user User, session SessionData, parsedRe

// Handle step 17.
loginCredential.Authenticator.UpdateCounter(parsedResponse.Response.AuthenticatorData.Counter)
// Check if the BackupEligible flag has changed.
if loginCredential.Flags.BackupEligible != parsedResponse.Response.AuthenticatorData.Flags.HasBackupEligible() {
return nil, protocol.ErrBadRequest.WithDetails("BackupEligible flag should not change")
}
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// TODO: The backup eligible flag shouldn't change. Should decide if we want to error if it does.
// Update flags from response data.
loginCredential.Flags.UserPresent = parsedResponse.Response.AuthenticatorData.Flags.HasUserPresent()
loginCredential.Flags.UserVerified = parsedResponse.Response.AuthenticatorData.Flags.HasUserVerified()
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