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From 736d709ec194b3a763e004696df22792c62a11fc Mon Sep 17 00:00:00 2001
From: Tomas Mraz <tmraz@fedoraproject.org>
Date: Thu, 24 Sep 2020 10:16:46 +0200
Subject: Add support for PROFILE=SYSTEM system default cipherlist
(was openssl-1.1.1-system-cipherlist.patch)
---
Configurations/unix-Makefile.tmpl | 5 ++
Configure | 10 +++-
doc/man1/openssl-ciphers.pod.in | 9 ++++
include/openssl/ssl.h.in | 5 ++
ssl/ssl_ciph.c | 88 +++++++++++++++++++++++++++----
ssl/ssl_lib.c | 4 +-
test/cipherlist_test.c | 2 +
util/libcrypto.num | 1 +
8 files changed, 110 insertions(+), 14 deletions(-)
diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index 9f369edf0e..c52389f831 100644
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -269,6 +269,10 @@ MANDIR=$(INSTALLTOP)/share/man
DOCDIR=$(INSTALLTOP)/share/doc/$(BASENAME)
HTMLDIR=$(DOCDIR)/html
+{- output_off() if $config{system_ciphers_file} eq ""; "" -}
+SYSTEM_CIPHERS_FILE_DEFINE=-DSYSTEM_CIPHERS_FILE="\"{- $config{system_ciphers_file} -}\""
+{- output_on() if $config{system_ciphers_file} eq ""; "" -}
+
# MANSUFFIX is for the benefit of anyone who may want to have a suffix
# appended after the manpage file section number. "ssl" is popular,
# resulting in files such as config.5ssl rather than config.5.
@@ -292,6 +296,7 @@ CC=$(CROSS_COMPILE){- $config{CC} -}
CXX={- $config{CXX} ? "\$(CROSS_COMPILE)$config{CXX}" : '' -}
CPPFLAGS={- our $cppflags1 = join(" ",
(map { "-D".$_} @{$config{CPPDEFINES}}),
+ "\$(SYSTEM_CIPHERS_FILE_DEFINE)",
(map { "-I".$_} @{$config{CPPINCLUDES}}),
@{$config{CPPFLAGS}}) -}
CFLAGS={- join(' ', @{$config{CFLAGS}}) -}
diff --git a/doc/man1/openssl-ciphers.pod.in b/doc/man1/openssl-ciphers.pod.in
index b4ed3e51d5..2122e6bdfd 100644
--- a/doc/man1/openssl-ciphers.pod.in
+++ b/doc/man1/openssl-ciphers.pod.in
@@ -187,6 +187,15 @@ As of OpenSSL 1.0.0, the B<ALL> cipher suites are sensibly ordered by default.
The cipher suites not enabled by B<ALL>, currently B<eNULL>.
+=item B<PROFILE=SYSTEM>
+
+The list of enabled cipher suites will be loaded from the system crypto policy
+configuration file B</etc/crypto-policies/back-ends/openssl.config>.
+See also L<update-crypto-policies(8)>.
+This is the default behavior unless an application explicitly sets a cipher
+list. If used in a cipher list configuration value this string must be at the
+beginning of the cipher list, otherwise it will not be recognized.
+
=item B<HIGH>
"High" encryption cipher suites. This currently means those with key lengths
diff --git a/include/openssl/ssl.h.in b/include/openssl/ssl.h.in
index f9a61609e4..c6f95fed3f 100644
--- a/include/openssl/ssl.h.in
+++ b/include/openssl/ssl.h.in
@@ -209,6 +209,11 @@ extern "C" {
* throwing out anonymous and unencrypted ciphersuites! (The latter are not
* actually enabled by ALL, but "ALL:RSA" would enable some of them.)
*/
+# ifdef SYSTEM_CIPHERS_FILE
+# define SSL_SYSTEM_DEFAULT_CIPHER_LIST "PROFILE=SYSTEM"
+# else
+# define SSL_SYSTEM_DEFAULT_CIPHER_LIST OSSL_default_cipher_list()
+# endif
/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
# define SSL_SENT_SHUTDOWN 1
diff --git a/ssl/ssl_ciph.c b/ssl/ssl_ciph.c
index b1d3f7919e..f7cc7fed48 100644
--- a/ssl/ssl_ciph.c
+++ b/ssl/ssl_ciph.c
@@ -1411,6 +1411,53 @@ int SSL_set_ciphersuites(SSL *s, const char *str)
return ret;
}
+#ifdef SYSTEM_CIPHERS_FILE
+static char *load_system_str(const char *suffix)
+{
+ FILE *fp;
+ char buf[1024];
+ char *new_rules;
+ const char *ciphers_path;
+ unsigned len, slen;
+
+ if ((ciphers_path = ossl_safe_getenv("OPENSSL_SYSTEM_CIPHERS_OVERRIDE")) == NULL)
+ ciphers_path = SYSTEM_CIPHERS_FILE;
+ fp = fopen(ciphers_path, "r");
+ if (fp == NULL || fgets(buf, sizeof(buf), fp) == NULL) {
+ /* cannot open or file is empty */
+ snprintf(buf, sizeof(buf), "%s", SSL_DEFAULT_CIPHER_LIST);
+ }
+
+ if (fp)
+ fclose(fp);
+
+ slen = strlen(suffix);
+ len = strlen(buf);
+
+ if (buf[len - 1] == '\n') {
+ len--;
+ buf[len] = 0;
+ }
+ if (buf[len - 1] == '\r') {
+ len--;
+ buf[len] = 0;
+ }
+
+ new_rules = OPENSSL_malloc(len + slen + 1);
+ if (new_rules == 0)
+ return NULL;
+
+ memcpy(new_rules, buf, len);
+ if (slen > 0) {
+ memcpy(&new_rules[len], suffix, slen);
+ len += slen;
+ }
+ new_rules[len] = 0;
+
+ return new_rules;
+}
+#endif
+
STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
STACK_OF(SSL_CIPHER) **cipher_list,
@@ -1425,15 +1472,25 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
const SSL_CIPHER **ca_list = NULL;
const SSL_METHOD *ssl_method = ctx->method;
+#ifdef SYSTEM_CIPHERS_FILE
+ char *new_rules = NULL;
+
+ if (rule_str != NULL && strncmp(rule_str, "PROFILE=SYSTEM", 14) == 0) {
+ char *p = rule_str + 14;
+
+ new_rules = load_system_str(p);
+ rule_str = new_rules;
+ }
+#endif
/*
* Return with error if nothing to do.
*/
if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
- return NULL;
+ goto err;
if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
- return NULL;
+ goto err;
/*
* To reduce the work to do we only want to process the compiled
@@ -1456,7 +1513,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers);
if (co_list == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
- return NULL; /* Failure */
+ goto err;
}
ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
@@ -1522,8 +1579,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
* in force within each class
*/
if (!ssl_cipher_strength_sort(&head, &tail)) {
- OPENSSL_free(co_list);
- return NULL;
+ goto err;
}
/*
@@ -1568,9 +1624,8 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max);
if (ca_list == NULL) {
- OPENSSL_free(co_list);
ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
- return NULL; /* Failure */
+ goto err;
}
ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
disabled_mkey, disabled_auth, disabled_enc,
@@ -1596,8 +1651,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
OPENSSL_free(ca_list); /* Not needed anymore */
if (!ok) { /* Rule processing failure */
- OPENSSL_free(co_list);
- return NULL;
+ goto err;
}
/*
@@ -1605,10 +1659,13 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
* if we cannot get one.
*/
if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
- OPENSSL_free(co_list);
- return NULL;
+ goto err;
}
+#ifdef SYSTEM_CIPHERS_FILE
+ OPENSSL_free(new_rules); /* Not needed anymore */
+#endif
+
/* Add TLSv1.3 ciphers first - we always prefer those if possible */
for (i = 0; i < sk_SSL_CIPHER_num(tls13_ciphersuites); i++) {
const SSL_CIPHER *sslc = sk_SSL_CIPHER_value(tls13_ciphersuites, i);
@@ -1656,6 +1714,14 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
*cipher_list = cipherstack;
return cipherstack;
+
+err:
+ OPENSSL_free(co_list);
+#ifdef SYSTEM_CIPHERS_FILE
+ OPENSSL_free(new_rules);
+#endif
+ return NULL;
+
}
char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index d14d5819ba..48d491219a 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -660,7 +660,7 @@ int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
ctx->tls13_ciphersuites,
&(ctx->cipher_list),
&(ctx->cipher_list_by_id),
- OSSL_default_cipher_list(), ctx->cert);
+ SSL_SYSTEM_DEFAULT_CIPHER_LIST, ctx->cert);
if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
return 0;
@@ -3193,7 +3193,7 @@ SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
if (!ssl_create_cipher_list(ret,
ret->tls13_ciphersuites,
&ret->cipher_list, &ret->cipher_list_by_id,
- OSSL_default_cipher_list(), ret->cert)
+ SSL_SYSTEM_DEFAULT_CIPHER_LIST, ret->cert)
|| sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
goto err2;
diff --git a/test/cipherlist_test.c b/test/cipherlist_test.c
index 380f0727fc..6922a87c30 100644
--- a/test/cipherlist_test.c
+++ b/test/cipherlist_test.c
@@ -244,7 +244,9 @@ end:
int setup_tests(void)
{
+#ifndef SYSTEM_CIPHERS_FILE
ADD_TEST(test_default_cipherlist_implicit);
+#endif
ADD_TEST(test_default_cipherlist_explicit);
ADD_TEST(test_default_cipherlist_clear);
return 1;
diff --git a/util/libcrypto.num b/util/libcrypto.num
index 404a706fab..e81fa9ec3e 100644
--- a/util/libcrypto.num
+++ b/util/libcrypto.num
@@ -5428,3 +5282,4 @@ OSSL_DECODER_CTX_set_input_structure ? 3_0_0 EXIST::FUNCTION:
OPENSSL_strncasecmp 5557 3_0_3 EXIST::FUNCTION:
OSSL_CMP_CTX_reset_geninfo_ITAVs 5558 3_0_8 EXIST::FUNCTION:CMP
OSSL_CMP_MSG_update_recipNonce 5559 3_0_9 EXIST::FUNCTION:CMP
+ossl_safe_getenv ? 3_0_0 EXIST::FUNCTION:
--
2.26.2
diff -up openssl-3.0.0-beta1/Configure.sys-default openssl-3.0.0-beta1/Configure
--- openssl-3.0.0-beta1/Configure.sys-default 2021-06-29 11:47:58.978144386 +0200
+++ openssl-3.0.0-beta1/Configure 2021-06-29 11:52:01.631126260 +0200
@@ -27,7 +27,7 @@ use OpenSSL::config;
my $orig_death_handler = $SIG{__DIE__};
$SIG{__DIE__} = \&death_handler;
-my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
+my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--system-ciphers-file=SYSTEMCIPHERFILE] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
my $banner = <<"EOF";
@@ -61,6 +61,10 @@ EOF
# given with --prefix.
# This becomes the value of OPENSSLDIR in Makefile and in C.
# (Default: PREFIX/ssl)
+#
+# --system-ciphers-file A file to read cipher string from when the PROFILE=SYSTEM
+# cipher is specified (default).
+#
# --banner=".." Output specified text instead of default completion banner
#
# -w Don't wait after showing a Configure warning
@@ -385,6 +389,7 @@ $config{prefix}="";
$config{openssldir}="";
$config{processor}="";
$config{libdir}="";
+$config{system_ciphers_file}="";
my $auto_threads=1; # enable threads automatically? true by default
my $default_ranlib;
@@ -987,6 +992,10 @@ while (@argvcopy)
die "FIPS key too long (64 bytes max)\n"
if length $1 > 64;
}
+ elsif (/^--system-ciphers-file=(.*)$/)
+ {
+ $config{system_ciphers_file}=$1;
+ }
elsif (/^--banner=(.*)$/)
{
$banner = $1 . "\n";
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