Patchwork [3/3,Resend,2] securebootcert: add Ubuntu UEFI secure boot test - check Ubuntu CA presence

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Submitter Ivan Hu
Date March 6, 2013, 12:58 a.m.
Message ID <1362531497-2048-1-git-send-email-ivan.hu@canonical.com>
Download mbox | patch
Permalink /patch/225236/
State Accepted
Headers show

Comments

Ivan Hu - March 6, 2013, 12:58 a.m.
From: IvanHu <ivan.hu@canonical.com>

Check the variable KEK existence and Ubuntu master CA certificate presence
in KEK.

Signed-off-by: Ivan Hu <ivan.hu@canonical.com>
---
 src/uefi/securebootcert/securebootcert.c |   44 ++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
Keng-Yu Lin - March 8, 2013, 7:51 a.m.
On Wed, Mar 6, 2013 at 8:58 AM, Ivan Hu <ivan.hu@canonical.com> wrote:
> From: IvanHu <ivan.hu@canonical.com>
>
> Check the variable KEK existence and Ubuntu master CA certificate presence
> in KEK.
>
> Signed-off-by: Ivan Hu <ivan.hu@canonical.com>
> ---
>  src/uefi/securebootcert/securebootcert.c |   44 ++++++++++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
>
> diff --git a/src/uefi/securebootcert/securebootcert.c b/src/uefi/securebootcert/securebootcert.c
> index 60d55cb..0a36c41 100644
> --- a/src/uefi/securebootcert/securebootcert.c
> +++ b/src/uefi/securebootcert/securebootcert.c
> @@ -253,10 +253,51 @@ static void securebootcert_data_base(fwts_framework *fw, fwts_uefi_var *var, cha
>                         "The Microsoft UEFI CA certificate not found .");
>  }
>
> +static void securebootcert_key_ex_key(fwts_framework *fw, fwts_uefi_var *var, char *varname)
> +{
> +
> +       bool ident = false;
> +       EFI_GUID global_var_guid = EFI_GLOBAL_VARIABLE;
> +
> +       if (strcmp(varname, "KEK"))
> +               return;
> +
> +       var_found |= VAR_KEK_FOUND;
> +       ident = compare_guid(&global_var_guid, var->guid);
> +
> +       if (!ident) {
> +               fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableGUIDInvalid",
> +                       "The secure boot variable %s GUID invalid.", varname);
> +               return;
> +       }
> +
> +       fwts_release *release = fwts_release_get();
> +       if (release == NULL) {
> +               fwts_skipped(fw, "Cannot determine system, stop checking the Ubuntu Master CA certificate.");
> +               return;
> +       }
> +
> +       if (strcmp(release->distributor, "Ubuntu") != 0) {
> +               fwts_skipped(fw, "Not a Ubuntu system, it's not necessary checking the Ubuntu Master CA certificate.");
> +               fwts_release_free(release);
> +               return;
> +       }
> +       fwts_release_free(release);
> +
> +       fwts_log_info_verbatum(fw, "Check Ubuntu master CA certificate presence in %s", varname);
> +       if (check_sigdb_presence(var->data, var->datalen, ubuntu_key, ubuntu_key_len))
> +               fwts_passed(fw, "Ubuntu UEFI CA 2011 key check passed.");
> +       else {
> +               fwts_log_info_verbatum(fw, "No Ubuntu master CA certificate presence in %s", varname);
> +               fwts_infoonly(fw);
> +       }
> +}
> +
>  static securebootcert_info securebootcert_info_table[] = {
>         { "SecureBoot",         securebootcert_secure_boot },
>         { "SetupMode",          securebootcert_setup_mode },
>         { "db",                 securebootcert_data_base },
> +       { "KEK",                securebootcert_key_ex_key },
>         { NULL, NULL }
>  };
>
> @@ -358,6 +399,9 @@ static int securebootcert_test1(fwts_framework *fw)
>         if (!(var_found & VAR_DB_FOUND))
>                 fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
>                         "The secure boot variable DB not found.");
> +       if (!(var_found & VAR_KEK_FOUND))
> +               fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
> +                       "The secure boot variable KEK not found.");
>
>         fwts_uefi_free_variable_names(&name_list);
>
> --
> 1.7.10.4
>
Acked-by: Keng-Yu Lin <kengyu@canonical.com>
Colin King - March 8, 2013, 4:25 p.m.
On 06/03/13 00:58, Ivan Hu wrote:
> From: IvanHu <ivan.hu@canonical.com>
>
> Check the variable KEK existence and Ubuntu master CA certificate presence
> in KEK.
>
> Signed-off-by: Ivan Hu <ivan.hu@canonical.com>
> ---
>   src/uefi/securebootcert/securebootcert.c |   44 ++++++++++++++++++++++++++++++
>   1 file changed, 44 insertions(+)
>
> diff --git a/src/uefi/securebootcert/securebootcert.c b/src/uefi/securebootcert/securebootcert.c
> index 60d55cb..0a36c41 100644
> --- a/src/uefi/securebootcert/securebootcert.c
> +++ b/src/uefi/securebootcert/securebootcert.c
> @@ -253,10 +253,51 @@ static void securebootcert_data_base(fwts_framework *fw, fwts_uefi_var *var, cha
>   			"The Microsoft UEFI CA certificate not found .");
>   }
>
> +static void securebootcert_key_ex_key(fwts_framework *fw, fwts_uefi_var *var, char *varname)
> +{
> +
> +	bool ident = false;
> +	EFI_GUID global_var_guid = EFI_GLOBAL_VARIABLE;
> +
> +	if (strcmp(varname, "KEK"))
> +		return;
> +
> +	var_found |= VAR_KEK_FOUND;
> +	ident = compare_guid(&global_var_guid, var->guid);
> +
> +	if (!ident) {
> +		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableGUIDInvalid",
> +			"The secure boot variable %s GUID invalid.", varname);
> +		return;
> +	}
> +
> +	fwts_release *release = fwts_release_get();
> +	if (release == NULL) {
> +		fwts_skipped(fw, "Cannot determine system, stop checking the Ubuntu Master CA certificate.");
> +		return;
> +	}
> +
> +	if (strcmp(release->distributor, "Ubuntu") != 0) {
> +		fwts_skipped(fw, "Not a Ubuntu system, it's not necessary checking the Ubuntu Master CA certificate.");
> +		fwts_release_free(release);
> +		return;
> +	}
> +	fwts_release_free(release);
> +
> +	fwts_log_info_verbatum(fw, "Check Ubuntu master CA certificate presence in %s", varname);
> +	if (check_sigdb_presence(var->data, var->datalen, ubuntu_key, ubuntu_key_len))
> +		fwts_passed(fw, "Ubuntu UEFI CA 2011 key check passed.");
> +	else {
> +		fwts_log_info_verbatum(fw, "No Ubuntu master CA certificate presence in %s", varname);
> +		fwts_infoonly(fw);
> +	}
> +}
> +
>   static securebootcert_info securebootcert_info_table[] = {
>   	{ "SecureBoot",		securebootcert_secure_boot },
>   	{ "SetupMode",		securebootcert_setup_mode },
>   	{ "db",			securebootcert_data_base },
> +	{ "KEK",		securebootcert_key_ex_key },
>   	{ NULL, NULL }
>   };
>
> @@ -358,6 +399,9 @@ static int securebootcert_test1(fwts_framework *fw)
>   	if (!(var_found & VAR_DB_FOUND))
>   		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
>   			"The secure boot variable DB not found.");
> +	if (!(var_found & VAR_KEK_FOUND))
> +		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
> +			"The secure boot variable KEK not found.");
>
>   	fwts_uefi_free_variable_names(&name_list);
>
>
Acked-by: Colin Ian King <colin.king@canonical.com>

Patch

diff --git a/src/uefi/securebootcert/securebootcert.c b/src/uefi/securebootcert/securebootcert.c
index 60d55cb..0a36c41 100644
--- a/src/uefi/securebootcert/securebootcert.c
+++ b/src/uefi/securebootcert/securebootcert.c
@@ -253,10 +253,51 @@  static void securebootcert_data_base(fwts_framework *fw, fwts_uefi_var *var, cha
 			"The Microsoft UEFI CA certificate not found .");
 }
 
+static void securebootcert_key_ex_key(fwts_framework *fw, fwts_uefi_var *var, char *varname)
+{
+
+	bool ident = false;
+	EFI_GUID global_var_guid = EFI_GLOBAL_VARIABLE;
+
+	if (strcmp(varname, "KEK"))
+		return;
+
+	var_found |= VAR_KEK_FOUND;
+	ident = compare_guid(&global_var_guid, var->guid);
+
+	if (!ident) {
+		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableGUIDInvalid",
+			"The secure boot variable %s GUID invalid.", varname);
+		return;
+	}
+
+	fwts_release *release = fwts_release_get();
+	if (release == NULL) {
+		fwts_skipped(fw, "Cannot determine system, stop checking the Ubuntu Master CA certificate.");
+		return;
+	}
+
+	if (strcmp(release->distributor, "Ubuntu") != 0) {
+		fwts_skipped(fw, "Not a Ubuntu system, it's not necessary checking the Ubuntu Master CA certificate.");
+		fwts_release_free(release);
+		return;
+	}
+	fwts_release_free(release);
+
+	fwts_log_info_verbatum(fw, "Check Ubuntu master CA certificate presence in %s", varname);
+	if (check_sigdb_presence(var->data, var->datalen, ubuntu_key, ubuntu_key_len))
+		fwts_passed(fw, "Ubuntu UEFI CA 2011 key check passed.");
+	else {
+		fwts_log_info_verbatum(fw, "No Ubuntu master CA certificate presence in %s", varname);
+		fwts_infoonly(fw);
+	}
+}
+
 static securebootcert_info securebootcert_info_table[] = {
 	{ "SecureBoot",		securebootcert_secure_boot },
 	{ "SetupMode",		securebootcert_setup_mode },
 	{ "db",			securebootcert_data_base },
+	{ "KEK",		securebootcert_key_ex_key },
 	{ NULL, NULL }
 };
 
@@ -358,6 +399,9 @@  static int securebootcert_test1(fwts_framework *fw)
 	if (!(var_found & VAR_DB_FOUND))
 		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
 			"The secure boot variable DB not found.");
+	if (!(var_found & VAR_KEK_FOUND))
+		fwts_failed(fw, LOG_LEVEL_HIGH, "SecureBootCertVariableNotFound",
+			"The secure boot variable KEK not found.");
 
 	fwts_uefi_free_variable_names(&name_list);