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s390-tools/s390-tools-sles15sp6-02-genprotimg-support-Armonk-in-IBM-signing-key-subject.patch

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Index: s390-tools-service/genprotimg/src/include/pv_crypto_def.h
===================================================================
--- s390-tools-service.orig/genprotimg/src/include/pv_crypto_def.h
+++ s390-tools-service/genprotimg/src/include/pv_crypto_def.h
@@ -17,7 +17,8 @@
/* IBM signing key subject */
#define PV_IBM_Z_SUBJECT_COMMON_NAME "International Business Machines Corporation"
#define PV_IBM_Z_SUBJECT_COUNTRY_NAME "US"
-#define PV_IBM_Z_SUBJECT_LOCALITY_NAME "Poughkeepsie"
+#define PV_IBM_Z_SUBJECT_LOCALITY_NAME_POUGHKEEPSIE "Poughkeepsie"
+#define PV_IBM_Z_SUBJECT_LOCALITY_NAME_ARMONK "Armonk"
#define PV_IBM_Z_SUBJECT_ORGANIZATIONONAL_UNIT_NAME_SUFFIX "Key Signing Service"
#define PV_IBM_Z_SUBJECT_ORGANIZATION_NAME "International Business Machines Corporation"
#define PV_IBM_Z_SUBJECT_STATE "New York"
Index: s390-tools-service/genprotimg/src/utils/crypto.c
===================================================================
--- s390-tools-service.orig/genprotimg/src/utils/crypto.c
+++ s390-tools-service/genprotimg/src/utils/crypto.c
@@ -664,62 +664,9 @@ static gboolean x509_name_data_by_nid_eq
return memcmp(data, y, data_len) == 0;
}
-static gboolean own_X509_NAME_ENTRY_equal(const X509_NAME_ENTRY *x,
- const X509_NAME_ENTRY *y)
-{
- const ASN1_OBJECT *x_obj = X509_NAME_ENTRY_get_object(x);
- const ASN1_STRING *x_data = X509_NAME_ENTRY_get_data(x);
- const ASN1_OBJECT *y_obj = X509_NAME_ENTRY_get_object(y);
- const ASN1_STRING *y_data = X509_NAME_ENTRY_get_data(y);
- gint x_len = ASN1_STRING_length(x_data);
- gint y_len = ASN1_STRING_length(y_data);
-
- if (x_len < 0 || x_len != y_len)
- return FALSE;
-
- /* ASN1_STRING_cmp(x_data, y_data) == 0 doesn't work because it also
- * compares the type, which is sometimes different.
- */
- return OBJ_cmp(x_obj, y_obj) == 0 &&
- memcmp(ASN1_STRING_get0_data(x_data),
- ASN1_STRING_get0_data(y_data),
- (unsigned long)x_len) == 0;
-}
-
-static gboolean own_X509_NAME_equal(const X509_NAME *x, const X509_NAME *y)
-{
- gint x_count = X509_NAME_entry_count(x);
- gint y_count = X509_NAME_entry_count(y);
-
- if (x != y && (!x || !y))
- return FALSE;
-
- if (x_count != y_count)
- return FALSE;
-
- for (gint i = 0; i < x_count; i++) {
- const X509_NAME_ENTRY *entry_i = X509_NAME_get_entry(x, i);
- gboolean entry_found = FALSE;
-
- for (gint j = 0; j < y_count; j++) {
- const X509_NAME_ENTRY *entry_j =
- X509_NAME_get_entry(y, j);
-
- if (own_X509_NAME_ENTRY_equal(entry_i, entry_j)) {
- entry_found = TRUE;
- break;
- }
- }
-
- if (!entry_found)
- return FALSE;
- }
- return TRUE;
-}
-
/* Checks whether the subject of @cert is a IBM signing key subject. For this we
* must check that the subject is equal to: 'C = US, ST = New York, L =
- * Poughkeepsie, O = International Business Machines Corporation, CN =
+ * Poughkeepsie or Armonk, O = International Business Machines Corporation, CN =
* International Business Machines Corporation' and the organization unit (OUT)
* must end with the suffix ' Key Signing Service'.
*/
@@ -743,8 +690,10 @@ static gboolean has_ibm_signing_subject(
PV_IBM_Z_SUBJECT_STATE))
return FALSE;
- if (!x509_name_data_by_nid_equal(subject, NID_localityName,
- PV_IBM_Z_SUBJECT_LOCALITY_NAME))
+ if (!(x509_name_data_by_nid_equal(subject, NID_localityName,
+ PV_IBM_Z_SUBJECT_LOCALITY_NAME_POUGHKEEPSIE) ||
+ x509_name_data_by_nid_equal(subject, NID_localityName,
+ PV_IBM_Z_SUBJECT_LOCALITY_NAME_ARMONK)))
return FALSE;
if (!x509_name_data_by_nid_equal(subject, NID_organizationName,
@@ -806,6 +755,39 @@ static X509_NAME *x509_name_reorder_attr
return g_steal_pointer(&ret);
}
+/** Replace locality 'Armonk' with 'Pougkeepsie'. If Armonk was not set return
+ * `NULL`.
+ */
+static X509_NAME *x509_armonk_locality_fixup(const X509_NAME *name)
+{
+ g_autoptr(X509_NAME) ret = NULL;
+ int pos;
+
+ /* Check if ``L=Armonk`` */
+ if (!x509_name_data_by_nid_equal((X509_NAME *)name, NID_localityName,
+ PV_IBM_Z_SUBJECT_LOCALITY_NAME_ARMONK))
+ return NULL;
+
+ ret = X509_NAME_dup(name);
+ if (!ret)
+ g_abort();
+
+ pos = X509_NAME_get_index_by_NID(ret, NID_localityName, -1);
+ if (pos == -1)
+ return NULL;
+
+ X509_NAME_ENTRY_free(X509_NAME_delete_entry(ret, pos));
+
+ /* Create a new name entry at the same position as before */
+ if (X509_NAME_add_entry_by_NID(
+ ret, NID_localityName, MBSTRING_UTF8,
+ (const unsigned char *)&PV_IBM_Z_SUBJECT_LOCALITY_NAME_POUGHKEEPSIE,
+ sizeof(PV_IBM_Z_SUBJECT_LOCALITY_NAME_POUGHKEEPSIE) - 1, pos, 0) != 1)
+ return NULL;
+
+ return g_steal_pointer(&ret);
+}
+
/* In RFC 5280 the attributes of a (subject/issuer) name is not mandatory
* ordered. The problem is that our certificates are not consistent in the order
* (see https://tools.ietf.org/html/rfc5280#section-4.1.2.4 for details).
@@ -828,24 +810,10 @@ X509_NAME *c2b_name(const X509_NAME *nam
return X509_NAME_dup((X509_NAME *)name);
}
-/* Verify that: subject(issuer) == issuer(crl) and SKID(issuer) == AKID(crl) */
+/* Verify that SKID(issuer) == AKID(crl) if available */
static gint check_crl_issuer(X509_CRL *crl, X509 *issuer, GError **err)
{
- const X509_NAME *crl_issuer = X509_CRL_get_issuer(crl);
- const X509_NAME *issuer_subject = X509_get_subject_name(issuer);
- AUTHORITY_KEYID *akid = NULL;
-
- if (!own_X509_NAME_equal(issuer_subject, crl_issuer)) {
- g_autofree char *issuer_subject_str = X509_NAME_oneline(issuer_subject,
- NULL, 0);
- g_autofree char *crl_issuer_str = X509_NAME_oneline(crl_issuer, NULL, 0);
-
- g_set_error(err, PV_CRYPTO_ERROR,
- PV_CRYPTO_ERROR_CRL_SUBJECT_ISSUER_MISMATCH,
- _("issuer mismatch:\n%s\n%s"),
- issuer_subject_str, crl_issuer_str);
- return -1;
- }
+ g_autoptr(AUTHORITY_KEYID) akid = NULL;
/* If AKID(@crl) is specified it must match with SKID(@issuer) */
akid = X509_CRL_get_ext_d2i(crl, NID_authority_key_identifier, NULL, NULL);
@@ -881,7 +849,6 @@ gint check_crl_valid_for_cert(X509_CRL *
return -1;
}
- /* check that the @crl issuer matches with the subject name of @cert*/
if (check_crl_issuer(crl, cert, err) < 0)
return -1;
@@ -910,6 +877,60 @@ gint check_crl_valid_for_cert(X509_CRL *
return 0;
}
+/* This function contains work-arounds for some known subject(CRT)<->issuer(CRL)
+ * issues.
+ */
+static STACK_OF_X509_CRL *quirk_X509_STORE_ctx_get1_crls(X509_STORE_CTX *ctx,
+ const X509_NAME *subject, GError **err)
+{
+ g_autoptr(X509_NAME) fixed_subject = NULL;
+ g_autoptr(STACK_OF_X509_CRL) ret = NULL;
+
+ ret = Pv_X509_STORE_CTX_get1_crls(ctx, subject);
+ if (ret && sk_X509_CRL_num(ret) > 0)
+ return g_steal_pointer(&ret);
+
+ /* Workaround to fix the mismatch between issuer name of the * IBM
+ * signing CRLs and the IBM signing key subject name. Locality name has
+ * changed from Poughkeepsie to Armonk.
+ */
+ fixed_subject = x509_armonk_locality_fixup(subject);
+ /* Was the locality replaced? */
+ if (fixed_subject) {
+ X509_NAME *tmp;
+
+ sk_X509_CRL_free(ret);
+ ret = Pv_X509_STORE_CTX_get1_crls(ctx, fixed_subject);
+ if (ret && sk_X509_CRL_num(ret) > 0)
+ return g_steal_pointer(&ret);
+
+ /* Workaround to fix the ordering mismatch between issuer name
+ * of the IBM signing CRLs and the IBM signing key subject name.
+ */
+ tmp = fixed_subject;
+ fixed_subject = c2b_name(fixed_subject);
+ X509_NAME_free(tmp);
+ sk_X509_CRL_free(ret);
+ ret = Pv_X509_STORE_CTX_get1_crls(ctx, fixed_subject);
+ if (ret && sk_X509_CRL_num(ret) > 0)
+ return g_steal_pointer(&ret);
+ X509_NAME_free(fixed_subject);
+ fixed_subject = NULL;
+ }
+
+ /* Workaround to fix the ordering mismatch between issuer name of the
+ * IBM signing CRLs and the IBM signing key subject name.
+ */
+ fixed_subject = c2b_name(subject);
+ sk_X509_CRL_free(ret);
+ ret = Pv_X509_STORE_CTX_get1_crls(ctx, fixed_subject);
+ if (ret && sk_X509_CRL_num(ret) > 0)
+ return g_steal_pointer(&ret);
+
+ g_set_error(err, PV_CRYPTO_ERROR, PV_CRYPTO_ERROR_NO_CRL, _("no CRL found"));
+ return NULL;
+}
+
/* Given a certificate @cert try to find valid revocation lists in @ctx. If no
* valid CRL was found NULL is returned.
*/
@@ -927,20 +948,9 @@ STACK_OF_X509_CRL *store_ctx_find_valid_
return NULL;
}
- ret = X509_STORE_CTX_get1_crls(ctx, subject);
- if (!ret) {
- /* Workaround to fix the mismatch between issuer name of the
- * IBM Z signing CRLs and the IBM Z signing key subject name.
- */
- g_autoptr(X509_NAME) broken_subject = c2b_name(subject);
-
- ret = X509_STORE_CTX_get1_crls(ctx, broken_subject);
- if (!ret) {
- g_set_error(err, PV_CRYPTO_ERROR, PV_CRYPTO_ERROR_NO_CRL,
- _("no CRL found"));
- return NULL;
- }
- }
+ ret = quirk_X509_STORE_ctx_get1_crls(ctx, subject, err);
+ if (!ret)
+ return NULL;
/* Filter out non-valid CRLs for @cert */
for (gint i = 0; i < sk_X509_CRL_num(ret); i++) {
@@ -1328,32 +1338,14 @@ gint check_chain_parameters(const STACK_
/* It's almost the same as X509_check_issed from OpenSSL does except that we
* don't check the key usage of the potential issuer. This means we check:
- * 1. issuer_name(cert) == subject_name(issuer)
- * 2. Check whether the akid(cert) (if available) matches the issuer skid
- * 3. Check that the cert algrithm matches the subject algorithm
- * 4. Verify the signature of certificate @cert is using the public key of
+ * 1. Check whether the akid(cert) (if available) matches the issuer skid
+ * 2. Check that the cert algrithm matches the subject algorithm
+ * 3. Verify the signature of certificate @cert is using the public key of
* @issuer.
*/
static gint check_host_key_issued(X509 *cert, X509 *issuer, GError **err)
{
- const X509_NAME *issuer_subject = X509_get_subject_name(issuer);
- const X509_NAME *cert_issuer = X509_get_issuer_name(cert);
- AUTHORITY_KEYID *akid = NULL;
-
- /* We cannot use X509_NAME_cmp() because it considers the order of the
- * X509_NAME_Entries.
- */
- if (!own_X509_NAME_equal(issuer_subject, cert_issuer)) {
- g_autofree char *issuer_subject_str =
- X509_NAME_oneline(issuer_subject, NULL, 0);
- g_autofree char *cert_issuer_str =
- X509_NAME_oneline(cert_issuer, NULL, 0);
- g_set_error(err, PV_CRYPTO_ERROR,
- PV_CRYPTO_ERROR_CERT_SUBJECT_ISSUER_MISMATCH,
- _("Subject issuer mismatch:\n'%s'\n'%s'"),
- issuer_subject_str, cert_issuer_str);
- return -1;
- }
+ g_autoptr(AUTHORITY_KEYID) akid = NULL;
akid = X509_get_ext_d2i(cert, NID_authority_key_identifier, NULL, NULL);
if (akid && X509_check_akid(issuer, akid) != X509_V_OK) {
Index: s390-tools-service/genprotimg/src/utils/crypto.h
===================================================================
--- s390-tools-service.orig/genprotimg/src/utils/crypto.h
+++ s390-tools-service/genprotimg/src/utils/crypto.h
@@ -75,6 +75,7 @@ void x509_pair_free(x509_pair *pair);
/* Register auto cleanup functions */
WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(ASN1_INTEGER, ASN1_INTEGER_free)
WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(ASN1_OCTET_STRING, ASN1_OCTET_STRING_free)
+WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(AUTHORITY_KEYID, AUTHORITY_KEYID_free)
WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(BIGNUM, BN_free)
WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(BIO, BIO_free_all)
WRAPPED_G_DEFINE_AUTOPTR_CLEANUP_FUNC(BN_CTX, BN_CTX_free)
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