File 0001-Limit-scope-of-CN-name-constraints.patch of Package openssl-1_1

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File 0001-Limit-scope-of-CN-name-constraints.patch of Package openssl-1_1 (Revision 6cd7e637483112b7d56af7c89e1fe8e4)

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From c2c2c7b3f1df94f9a447cc3cf8196579543cc57e Mon Sep 17 00:00:00 2001
From: Viktor Dukhovni <openssl-users@dukhovni.org>
Date: Fri, 18 May 2018 09:09:51 -0400
Subject: [PATCH 1/2] Limit scope of CN name constraints

Don't apply DNS name constraints to the subject CN when there's a
least one DNS-ID subjectAlternativeName.

Don't apply DNS name constraints to subject CN's that are sufficiently
unlike DNS names.  Checked name must have at least two labels, with
all labels non-empty, no trailing '.' and all hyphens must be
internal in each label.  In addition to the usual LDH characters,
we also allow "_", since some sites use these for hostnames despite
all the standards.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
---
 crypto/asn1/a_strex.c              |  50 -----------
 crypto/include/internal/asn1_int.h |   2 -
 crypto/x509v3/v3_ncons.c           | 140 +++++++++++++++++++++++++----
 test/certs/alt1-cert.pem           |  39 ++++----
 test/certs/alt1-key.pem            |  52 +++++------
 test/certs/badalt6-cert.pem        |  35 ++++----
 test/certs/badalt6-key.pem         |  52 +++++------
 test/certs/badalt7-cert.pem        |  33 ++++---
 test/certs/badalt7-key.pem         |  52 +++++------
 test/certs/badcn1-cert.pem         |  20 +++++
 test/certs/badcn1-key.pem          |  28 ++++++
 test/certs/goodcn1-cert.pem        |  22 +++++
 test/certs/goodcn1-key.pem         |  28 ++++++
 test/certs/setup.sh                |  25 ++++--
 test/recipes/25-test_verify.t      |   8 +-
 15 files changed, 376 insertions(+), 210 deletions(-)
 create mode 100644 test/certs/badcn1-cert.pem
 create mode 100644 test/certs/badcn1-key.pem
 create mode 100644 test/certs/goodcn1-cert.pem
 create mode 100644 test/certs/goodcn1-key.pem

diff --git a/crypto/asn1/a_strex.c b/crypto/asn1/a_strex.c
index 75bc4319c7..ec7ac5a30c 100644
--- a/crypto/asn1/a_strex.c
+++ b/crypto/asn1/a_strex.c
@@ -613,53 +613,3 @@ int ASN1_STRING_to_UTF8(unsigned char **out, const ASN1_STRING *in)
     *out = stmp.data;
     return stmp.length;
 }
-
-/* Return 1 if host is a valid hostname and 0 otherwise */
-int asn1_valid_host(const ASN1_STRING *host)
-{
-    int hostlen = host->length;
-    const unsigned char *hostptr = host->data;
-    int type = host->type;
-    int i;
-    signed char width = -1;
-    unsigned short chflags = 0, prevchflags;
-
-    if (type > 0 && type < 31)
-        width = tag2nbyte[type];
-    if (width == -1 || hostlen == 0)
-        return 0;
-    /* Treat UTF8String as width 1 as any MSB set is invalid */
-    if (width == 0)
-        width = 1;
-    for (i = 0 ; i < hostlen; i+= width) {
-        prevchflags = chflags;
-        /* Value must be <= 0x7F: check upper bytes are all zeroes */
-        if (width == 4) {
-            if (*hostptr++ != 0 || *hostptr++ != 0 || *hostptr++ != 0)
-                return 0;
-        } else if (width == 2) {
-            if (*hostptr++ != 0)
-                return 0;
-        }
-        if (*hostptr > 0x7f)
-            return 0;
-        chflags = char_type[*hostptr++];
-        if (!(chflags & (CHARTYPE_HOST_ANY | CHARTYPE_HOST_WILD))) {
-            /* Nothing else allowed at start or end of string */
-            if (i == 0 || i == hostlen - 1)
-                return 0;
-            /* Otherwise invalid if not dot or hyphen */
-            if (!(chflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN)))
-                return 0;
-            /*
-             * If previous is dot or hyphen then illegal unless both
-             * are hyphens: as .- -. .. are all illegal
-             */
-            if (prevchflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN)
-                && ((prevchflags & CHARTYPE_HOST_DOT)
-                    || (chflags & CHARTYPE_HOST_DOT)))
-                return 0;
-        }
-    }
-    return 1;
-}
diff --git a/crypto/include/internal/asn1_int.h b/crypto/include/internal/asn1_int.h
index f70e3b47ba..a0c65318d5 100644
--- a/crypto/include/internal/asn1_int.h
+++ b/crypto/include/internal/asn1_int.h
@@ -90,5 +90,3 @@ struct asn1_pctx_st {
     unsigned long oid_flags;
     unsigned long str_flags;
 } /* ASN1_PCTX */ ;
-
-int asn1_valid_host(const ASN1_STRING *host);
diff --git a/crypto/x509v3/v3_ncons.c b/crypto/x509v3/v3_ncons.c
index 2eec405a36..c4b0551a03 100644
--- a/crypto/x509v3/v3_ncons.c
+++ b/crypto/x509v3/v3_ncons.c
@@ -297,47 +297,151 @@ int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc)
 
 }
 
+static int cn2dnsid(ASN1_STRING *cn, unsigned char **dnsid, size_t *idlen)
+{
+    int utf8_length;    /* Return type of ASN1_STRING_to_UTF8 */
+    int i;
+    unsigned char *utf8_value;
+    int isdnsname = 0;
+
+    /* Don't leave outputs uninitialized */
+    *dnsid = NULL;
+    *idlen = 0;
+
+    /*-
+     * Per RFC 6125, DNS-IDs representing internationalized domain names appear
+     * in certificates in A-label encoded form:
+     *
+     *   https://tools.ietf.org/html/rfc6125#section-6.4.2
+     *
+     * The same applies to CNs which are intended to represent DNS names.
+     * However, while in the SAN DNS-IDs are IA5Strings, as CNs they may be
+     * needlessly encoded in 16-bit Unicode.  We perform a conversion to UTF-8
+     * to ensure that we get an ASCII representation of any CNs that are
+     * representable as ASCII, but just not encoded as ASCII.  The UTF-8 form
+     * may contain some non-ASCII octets, and that's fine, such CNs are not
+     * valid legacy DNS names.
+     *
+     * Note, 'int' is the return type of ASN1_STRING_to_UTF8() so that's what
+     * we must use for 'utf8_length'.
+     */
+    if ((utf8_length = ASN1_STRING_to_UTF8(&utf8_value, cn)) < 0)
+        return X509_V_ERR_OUT_OF_MEM;
+
+    /*
+     * Some certificates have had names that include a *trailing* NUL byte.
+     * Remove these harmless NUL characters. They would otherwise yield false
+     * alarms with the following embedded NUL check.
+     */
+    while (utf8_length > 0 && utf8_value[utf8_length - 1] == '\0')
+        --utf8_length;
+
+    /* Reject *embedded* NULs */
+    if ((size_t)utf8_length != strlen((char *)utf8_value))
+        return X509_V_ERR_UNSPECIFIED;
+
+    /*
+     * XXX: Deviation from strict DNS name syntax, also check names with '_'
+     * Check DNS name syntax, any '-' or '.' must be internal,
+     * and on either side of each '.' we can't have a '-' or '.'.
+     *
+     * If the name has just one label, we don't consider it a DNS name.  This
+     * means that "CN=sometld" cannot be precluded by DNS name constraints, but
+     * that is not a problem.
+     */
+    for (i = 0; i < utf8_length; ++i) {
+        unsigned char c = utf8_value[i];
+
+        if ((c >= 'a' && c <= 'z')
+            || (c >= 'A' && c <= 'Z')
+            || (c >= '0' && c <= '9')
+            || c == '_')
+            continue;
+
+        /* Dot and hyphen cannot be first or last. */
+        if (i > 0 && i < utf8_length - 1) {
+            if (c == '-')
+                continue;
+            /*
+             * Next to a dot the preceding and following characters must not be
+             * another dot or a hyphen.  Otherwise, record that the name is
+             * plausible, since it has two or more labels.
+             */
+            if (c == '.'
+                && utf8_value[i + 1] != '.'
+                && utf8_value[i - 1] != '-'
+                && utf8_value[i + 1] != '-') {
+                isdnsname = 1;
+                continue;
+            }
+        }
+        isdnsname = 0;
+        break;
+    }
+
+    if (isdnsname) {
+        *dnsid = utf8_value;
+        *idlen = (size_t)utf8_length;
+        return X509_V_OK;
+    }
+    OPENSSL_free(utf8_value);
+    return X509_V_OK;
+}
+
 int NAME_CONSTRAINTS_check_CN(X509 *x, NAME_CONSTRAINTS *nc)
 {
     int r, i;
+    GENERAL_NAMES *gens = NULL;
     X509_NAME *nm;
-
     ASN1_STRING stmp;
     GENERAL_NAME gntmp;
+
     stmp.flags = 0;
     stmp.type = V_ASN1_IA5STRING;
     gntmp.type = GEN_DNS;
     gntmp.d.dNSName = &stmp;
 
+    gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    if (gens != NULL) {
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            GENERAL_NAME *gen = sk_GENERAL_NAME_value(gens, i);
+
+            if (gen->type == GEN_DNS) {
+                GENERAL_NAMES_free(gens);
+                return X509_V_OK;
+            }
+        }
+        GENERAL_NAMES_free(gens);
+    }
+
     nm = X509_get_subject_name(x);
 
     /* Process any commonName attributes in subject name */
 
     for (i = -1;;) {
         X509_NAME_ENTRY *ne;
-        ASN1_STRING *hn;
+        ASN1_STRING *cn;
+        unsigned char *idval;
+        size_t idlen;
+
         i = X509_NAME_get_index_by_NID(nm, NID_commonName, i);
         if (i == -1)
             break;
         ne = X509_NAME_get_entry(nm, i);
-        hn = X509_NAME_ENTRY_get_data(ne);
-        /* Only process attributes that look like host names */
-        if (asn1_valid_host(hn)) {
-            unsigned char *h;
-            int hlen = ASN1_STRING_to_UTF8(&h, hn);
-            if (hlen <= 0)
-                return X509_V_ERR_OUT_OF_MEM;
+        cn = X509_NAME_ENTRY_get_data(ne);
 
-            stmp.length = hlen;
-            stmp.data = h;
-
-            r = nc_match(&gntmp, nc);
-
-            OPENSSL_free(h);
+        /* Only process attributes that look like host names */
+        if ((r = cn2dnsid(cn, &idval, &idlen)) != X509_V_OK)
+            return r;
+        if (idlen == 0)
+            continue;
 
-            if (r != X509_V_OK)
-                    return r;
-        }
+        stmp.length = idlen;
+        stmp.data = idval;
+        r = nc_match(&gntmp, nc);
+        OPENSSL_free(idval);
+        if (r != X509_V_OK)
+            return r;
     }
     return X509_V_OK;
 }
diff --git a/test/certs/alt1-cert.pem b/test/certs/alt1-cert.pem
index b94d0eaf9d..d68b0e5193 100644
--- a/test/certs/alt1-cert.pem
+++ b/test/certs/alt1-cert.pem
@@ -1,22 +1,21 @@
 -----BEGIN CERTIFICATE-----
-MIIDlTCCAn2gAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
-IE5DIENBIDEwIBcNMTYwNzA5MTQ0ODExWhgPMjExNjA3MTAxNDQ4MTFaMGgxIzAh
-BgNVBAoMGkdvb2QgTkMgVGVzdCBDZXJ0aWZpY2F0ZSAxMRUwEwYDVQQDDAx3d3cu
-Z29vZC5vcmcxEzARBgNVBAMMCkpvZSBCbG9nZ3MxFTATBgNVBAMMDGFueS5nb29k
-LmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALAv1X8S8uUpnjTa
-3bv7m1jJbbX7bC9w7k4TfxiU5XL/m3EhN//EUBJSoamy6vFC6oy/6jA8XmptlVrY
-Sp3ZKFdjdZh+CyYZKcrv4JReF2lfRIINn6d6EgcAobGTNwdcv67xuNtMi0meAvmK
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-xspKKsoPYYjk0BX9RvbKO8s4b86Wjzzntht+NpQ4LLh9XwPZog11qGE4UIrsV8XA
-YxJrMGQNZd69cnCOz8vnOVCszFOa4qVvXeAGr0iFlZAXbQJevpiiXaXHMEt8C1qH
-xpcW8DcCAwEAAaOBmDCBlTAdBgNVHQ4EFgQUw8nB25NP0gUaFCrOwAO5KzllnREw
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-Z4EMYW55QGdvb2QuY29thwTAqAABMA0GCSqGSIb3DQEBCwUAA4IBAQBUnDMrg1py
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-P68GDKI++WoUgM8LDfxS0KOL7A9cqcpM2L27hjyEgnqIBPHFfm9fxztBotuCTl5L
-vRlTFVjv65nn
+MIIDgTCCAmmgAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
+IE5DIENBIDEwIBcNMTgwNTE2MDIzODEzWhgPMjExODA1MTcwMjM4MTNaMFQxIzAh
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+ATANBgkqhkiG9w0BAQsFAAOCAQEATVcTyrAxsehdQNrkL6kquXxWlyegJcxvVxUe
+hfh9+Lw4620b2S1/l2YxFM3peLAsRgJOznmJOeG18+y7/kx/3UNqYGY7e8iJQ3Gl
+JwDIJp5JCaUOlodjhMJtRc7jn9RcsL97oizXdcryyWT0vSlM9Pie9NtHG5iq5X4+
+oL3X8+OG25MOkF2h3YVCEG3vDu7quyTlHc2ebwpdLZRndcOewO2Cap1ettyWXUPP
+Mha6wyJE8LJhrGmrI8Lw+i7gGscP0xYZn3yCLk5BtOabn4dvCiDmb+TPruKQQARw
+BG45LEZzGxz+Ad3xRdZyVi1I67v9YShoYTCpMTSxJaR0erH74g==
 -----END CERTIFICATE-----
diff --git a/test/certs/alt1-key.pem b/test/certs/alt1-key.pem
index b5d4d326c5..6df050a38f 100644
--- a/test/certs/alt1-key.pem
+++ b/test/certs/alt1-key.pem
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCwL9V/EvLlKZ40
-2t27+5tYyW21+2wvcO5OE38YlOVy/5txITf/xFASUqGpsurxQuqMv+owPF5qbZVa
-2Eqd2ShXY3WYfgsmGSnK7+CUXhdpX0SCDZ+nehIHAKGxkzcHXL+u8bjbTItJngL5
-ioC4zmvyIQhzQvpfLzQycf2vu5sR/sjcTy+pQv5CTI2uqGmJ3ce+FiaTwttiyf3A
-qcbKSirKD2GI5NAV/Ub2yjvLOG/Olo8857YbfjaUOCy4fV8D2aINdahhOFCK7FfF
-wGMSazBkDWXevXJwjs/L5zlQrMxTmuKlb13gBq9IhZWQF20CXr6Yol2lxzBLfAta
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-geCiWPL0f+dWlD1Byu4moXsASDE6tL/UuAAvnl+7R2HvL6SfsdGiTQc4qAvvyukM
-szks+MePHSlXmL5Eld7HfKgpvxY1SbYOQU0aPXAQAnLaOT931q+tgZMG6nBWN+pu
-w5bgKCA26BMAAaUAdIIDEa9fjzkpXjElCT4qhJYVKQn9Pb7aSc4jihSpCknqbb9c
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-sXJAoFllBNfAK3aanFOR1Q==
+MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQDTqvf6j+WxCtn4
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+EzX/9GdsRInifN6FfOfo/A==
 -----END PRIVATE KEY-----
diff --git a/test/certs/badalt6-cert.pem b/test/certs/badalt6-cert.pem
index fbe040b52c..f41568f6ee 100644
--- a/test/certs/badalt6-cert.pem
+++ b/test/certs/badalt6-cert.pem
@@ -1,22 +1,21 @@
 -----BEGIN CERTIFICATE-----
-MIIDljCCAn6gAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
-IE5DIENBIDEwIBcNMTYwNzA5MTQ0ODExWhgPMjExNjA3MTAxNDQ4MTFaMGkxIjAg
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-GH32QmEN5o5jZQ==
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+e2TXTNpdkn3l+ZK2FYdf7s8fytoe+6o92dN+fA==
 -----END CERTIFICATE-----
diff --git a/test/certs/badalt6-key.pem b/test/certs/badalt6-key.pem
index 203a4c7a00..782d69334a 100644
--- a/test/certs/badalt6-key.pem
+++ b/test/certs/badalt6-key.pem
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDKz8F/ndKz0vuv
-BymjTUjtrWSQsnsuisR+oW8CIliNBi8yqqeNrtoa2s+e2GBC7gxDlK9IOqGo4Ulu
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-7/P4T8hIGy6QjdW68lzwnN/I9x11NWoipIKvAOGXz0L/WaPPWZ0GJFlBqEX//O3+
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-/pu9qkNFGfYMFwsBUd8pp8zMnv552CCIgalBBFr1hy9q47HBaJPaF2/CjZJmsqkp
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+m1rTfab8O+tOOGKGyzfouD2A
 -----END PRIVATE KEY-----
diff --git a/test/certs/badalt7-cert.pem b/test/certs/badalt7-cert.pem
index b515ba43d9..4fa81b3c6f 100644
--- a/test/certs/badalt7-cert.pem
+++ b/test/certs/badalt7-cert.pem
@@ -1,23 +1,22 @@
 -----BEGIN CERTIFICATE-----
-MIID1DCCArygAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
-IE5DIENBIDEwIBcNMTYwNzA5MTQ0ODExWhgPMjExNjA3MTAxNDQ4MTFaMIGmMTsw
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+/yoVB3HsISpdeN70s/WYAgvev/FdV3O+JWhUYHdKrDB4DMfPhlRIfSgOymJljo6+
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+sifRl2Is+lGVeg4pPHFjB0npTNkaYafu89dz/3PNRRr5If06B+apk4AX
 -----END CERTIFICATE-----
diff --git a/test/certs/badalt7-key.pem b/test/certs/badalt7-key.pem
index 50557e8968..b453f1ff30 100644
--- a/test/certs/badalt7-key.pem
+++ b/test/certs/badalt7-key.pem
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDUrQclq+9LtgOP
-Tjvi2LtIr0D/rgbtp9xOkaBGH/qKf/iRd3JcHzEAhqokoEMTiTB5HLuICQ7nUSwk
-l6hz50dITnfpkOcEECZi4/APfSJnA9qDeUd1eSOG0pVz/RgqtqRQ58F7hHCd3dg7
-dR2DuIwODpf0QU9zSKpsEp0M17/fJo2BacugLgCGmBpm4dQy1sbEzyNjYzWnyWEv
-OTa0Ay5E6auPJwpkAifpcumc7u1riYgyg9UcbO2cIDbS4mYaeNU3hR8Qm30hSnvb
-uK51JiJiscIHPSrszi6SwMw/Wr1qTxh7ZArCxbIsPxCWH1HXgl3O7c/VoV2czpP3
-3yznK6KzAgMBAAECggEADjQ0Kv7tr3fLixGljEP/Vh5mT+02hz7TxueQ9b4DBKcB
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-mu0kYdtbjm2p2AGJJ99zN3EiQ9lZDyiFirOXEA9P/YdKKVlIwpDPbn/TmNY/k6Ul
-mRxgAJKwKiR6Gg3QMdTUKeaXBpKf/pa+5rzR7zxNbiQO3IXOVx7ZzQ2R0Wuivpqk
-yjMaqUa7dDuvtIHJBpJB7TIL6SlQkiS1lEQFhO7EAQKBgQDz30obdymxqQVy7IsH
-NLo5xRX1hRRN9h34Y4qC0JXkCTG1fWJ19KYHod0S5peaIo/ThDVf1UXln6amdCjM
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-GSu0UXqBVn1Q+u6CUAkh5jA9fpyM5sp9+t5FuwjO+ITHfiNFoD/LCeMUfYVDF7O2
-uCLTsN+7gTGpKMnfL/rg9exrsfDdsmbQe4BhrUFBsYfKgBlBraL0QGD+25qgU8CS
-CQ6toGCCAQKBgQDCYJskwRoObPXW4AsAN1qnaRtTkjrY2O6SaGSiV7bhByMD0WiF
-M/aR5sXapsj3Jc0Vfi88rzUDDPk7eyJ51wn3G8SUsDuo4Ja7jtxMqctL5PQmyxD+
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-cZtQWiEyaf026DdR8YBYn6tf
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+iiCseyA7Kr8Axt9QhUzoi5f7
 -----END PRIVATE KEY-----
diff --git a/test/certs/badcn1-cert.pem b/test/certs/badcn1-cert.pem
new file mode 100644
index 0000000000..3b3bad658b
--- /dev/null
+++ b/test/certs/badcn1-cert.pem
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
+MIIDQDCCAiigAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
+IE5DIENBIDEwIBcNMTgwNTE2MDI0MTMyWhgPMjExODA1MTcwMjQxMzJaME4xIzAh
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+/LIDvjzye5GaPXqXkAkcBcLBpWlgMm+j8xE+LzGw1NVw8vWMSpP2WX9kp7aPbh+A
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+/YuRhCgRExvdQ6kImwdKAfO7RLkxho6jny1HAgMBAAGjXjBcMB0GA1UdDgQWBBT5
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+3fVQQzAJBgNVHRMEAjAAMA8GA1UdEQQIMAaHBMCoAAEwDQYJKoZIhvcNAQELBQAD
+ggEBACKtfZCcP/pY8Bu+lb/pGZj5txsmNbJ1l2RVACQA7CGjwfUr7VaQGMuT+FuA
+Erlh+UnEC3R/e1xQwgJeuAXBOWFkxA61isVSrmM7YM6vDB0+t8N9lMUFjPbRyEkM
+A5kaSLPrgSOg7ONsO6YGbaWm1XCoUC6Ilrdzy+ckzklgjYRth99b2d5WrjIxEWIq
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+WC5zcU7GXLrDigwWPMDLQhVtu4OihWjsqugh6Jl7DxDBhi8JKO6tJQAISHjKaL98
+yXZFsQ//q7ATwlcHyB81B+X16AI=
+-----END CERTIFICATE-----
diff --git a/test/certs/badcn1-key.pem b/test/certs/badcn1-key.pem
new file mode 100644
index 0000000000..dbcf4b5d44
--- /dev/null
+++ b/test/certs/badcn1-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+OU1UaBTHEJ588xOpoMzbJkKlb5hPseEQsvu055Ky0euMgmlrALPQQ9e1DUSlowui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+-----END PRIVATE KEY-----
diff --git a/test/certs/goodcn1-cert.pem b/test/certs/goodcn1-cert.pem
new file mode 100644
index 0000000000..d9205e03b0
--- /dev/null
+++ b/test/certs/goodcn1-cert.pem
@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----
+MIIDkTCCAnmgAwIBAgIBAjANBgkqhkiG9w0BAQsFADAXMRUwEwYDVQQDDAxUZXN0
+IE5DIENBIDEwIBcNMTgwNTE2MDI0MDA0WhgPMjExODA1MTcwMjQwMDRaMIGeMSMw
+IQYDVQQKDBpHb29kIE5DIFRlc3QgQ2VydGlmaWNhdGUgMTEVMBMGA1UEAwwMd3d3
+Lmdvb2Qub3JnMRUwEwYDVQQDDAxhbnkuZ29vZC5jb20xETAPBgNVBAMMCG5vdC4u
+ZG5zMRAwDgYDVQQDDAdub3RAZG5zMREwDwYDVQQDDAhub3QtLmRuczERMA8GA1UE
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+nlYVjHtrFI+Iv/3b0jeZbs1jVnPF6ZREk46BTNAVNZsq24jKFG6yK4n9vKA/JuS7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+-----END CERTIFICATE-----
diff --git a/test/certs/goodcn1-key.pem b/test/certs/goodcn1-key.pem
new file mode 100644
index 0000000000..2ad660c6db
--- /dev/null
+++ b/test/certs/goodcn1-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/test/certs/setup.sh b/test/certs/setup.sh
index 7e1086a224..018e5fc690 100755
--- a/test/certs/setup.sh
+++ b/test/certs/setup.sh
@@ -241,15 +241,30 @@ NC="$NC excluded;DNS:bad.ok.good.com"
 NC=$NC ./mkcert.sh genca "Test NC sub CA" ncca3-key ncca3-cert \
         ncca1-key ncca1-cert
 
-# all subjectAltNames allowed by CA1.
+# all subjectAltNames allowed by CA1.  Some CNs are not!
 
 ./mkcert.sh req alt1-key "O = Good NC Test Certificate 1" \
-    "1.CN=www.good.org" "2.CN=Joe Bloggs" "3.CN=any.good.com" | \
+    "1.CN=www.example.net" "2.CN=Joe Bloggs" | \
     ./mkcert.sh geneealt alt1-key alt1-cert ncca1-key ncca1-cert \
     "DNS.1 = www.good.org" "DNS.2 = any.good.com" \
     "email.1 = good@good.org" "email.2 = any@good.com" \
     "IP = 127.0.0.1" "IP = 192.168.0.1"
 
+# all DNS-like CNs allowed by CA1, no DNS SANs.
+
+./mkcert.sh req goodcn1-key "O = Good NC Test Certificate 1" \
+    "1.CN=www.good.org" "2.CN=any.good.com" \
+    "3.CN=not..dns" "4.CN=not@dns" "5.CN=not-.dns" "6.CN=not.dns." | \
+    ./mkcert.sh geneealt goodcn1-key goodcn1-cert ncca1-key ncca1-cert \
+    "IP = 127.0.0.1" "IP = 192.168.0.1"
+
+# Some DNS-like CNs not permitted by CA1, no DNS SANs.
+
+./mkcert.sh req badcn1-key "O = Good NC Test Certificate 1" \
+    "1.CN=www.good.org" "3.CN=bad.net" | \
+    ./mkcert.sh geneealt badcn1-key badcn1-cert ncca1-key ncca1-cert \
+    "IP = 127.0.0.1" "IP = 192.168.0.1"
+
 # no subjectAltNames excluded by CA2.
 
 ./mkcert.sh req alt2-key "O = Good NC Test Certificate 2" | \
@@ -293,19 +308,17 @@ NC=$NC ./mkcert.sh genca "Test NC sub CA" ncca3-key ncca3-cert \
     "email.1 = good@good.org" "email.2 = any@good.com" \
     "IP = 127.0.0.2"
 
-# all subject alt names OK but subject CN not allowed by CA1.
+# No DNS-ID SANs and subject CN not allowed by CA1.
 ./mkcert.sh req badalt6-key "O = Bad NC Test Certificate 6" \
     "1.CN=other.good.org" "2.CN=Joe Bloggs" "3.CN=any.good.com" | \
     ./mkcert.sh geneealt badalt6-key badalt6-cert ncca1-key ncca1-cert \
-    "DNS.1 = www.good.org" "DNS.2 = any.good.com" \
     "email.1 = good@good.org" "email.2 = any@good.com" \
     "IP = 127.0.0.1" "IP = 192.168.0.1"
 
-# all subject alt names OK but subject CN not allowed by CA1, BMPSTRING
+# No DNS-ID SANS and subject CN not allowed by CA1, BMPSTRING
 REQMASK=MASK:0x800 ./mkcert.sh req badalt7-key "O = Bad NC Test Certificate 7" \
     "1.CN=other.good.org" "2.CN=Joe Bloggs" "3.CN=any.good.com" | \
     ./mkcert.sh geneealt badalt7-key badalt7-cert ncca1-key ncca1-cert \
-    "DNS.1 = www.good.org" "DNS.2 = any.good.com" \
     "email.1 = good@good.org" "email.2 = any@good.com" \
     "IP = 127.0.0.1" "IP = 192.168.0.1"
 
diff --git a/test/recipes/25-test_verify.t b/test/recipes/25-test_verify.t
index 11bd43090f..c23e114e06 100644
--- a/test/recipes/25-test_verify.t
+++ b/test/recipes/25-test_verify.t
@@ -30,7 +30,7 @@ sub verify {
     run(app([@args]));
 }
 
-plan tests => 127;
+plan tests => 129;
 
 # Canonical success
 ok(verify("ee-cert", "sslserver", ["root-cert"], ["ca-cert"]),
@@ -326,6 +326,12 @@ ok(verify("alt2-cert", "sslserver", ["root-cert"], ["ncca2-cert"], ),
 ok(verify("alt3-cert", "sslserver", ["root-cert"], ["ncca1-cert", "ncca3-cert"], ),
    "Name Constraints nested test all permitted");
 
+ok(verify("goodcn1-cert", "sslserver", ["root-cert"], ["ncca1-cert"], ),
+   "Name Constraints CNs permitted");
+
+ok(!verify("badcn1-cert", "sslserver", ["root-cert"], ["ncca1-cert"], ),
+   "Name Constraints CNs not permitted");
+
 ok(!verify("badalt1-cert", "sslserver", ["root-cert"], ["ncca1-cert"], ),
    "Name Constraints hostname not permitted");
 
-- 
2.17.0

Places

File 0001-Limit-scope-of-CN-name-constraints.patch of Package openssl-1_1 (Revision 6cd7e637483112b7d56af7c89e1fe8e4)

Places