automatic import of openssl3openeuler22.03_LTS_SP2openeuler22.03_LTSopeneuler20.03_LTS_SP1openeuler20.03

1 files changed, 74 insertions, 0 deletions

diff --git a/backport-Fix-DH_check-excessive-time-with-over-sized-modulus.patch b/backport-Fix-DH_check-excessive-time-with-over-sized-modulus.patch
new file mode 100644
index 0000000..53ddf3b
--- /dev/null
+++ b/backport-Fix-DH_check-excessive-time-with-over-sized-modulus.patch
@@ -0,0 +1,74 @@
+From 1fa20cf2f506113c761777127a38bce5068740eb Mon Sep 17 00:00:00 2001
+From: Matt Caswell <matt@openssl.org>
+Date: Thu, 6 Jul 2023 16:36:35 +0100
+Subject: [PATCH] Fix DH_check() excessive time with over sized modulus
+
+The DH_check() function checks numerous aspects of the key or parameters
+that have been supplied. Some of those checks use the supplied modulus
+value even if it is excessively large.
+
+There is already a maximum DH modulus size (10,000 bits) over which
+OpenSSL will not generate or derive keys. DH_check() will however still
+perform various tests for validity on such a large modulus. We introduce a
+new maximum (32,768) over which DH_check() will just fail.
+
+An application that calls DH_check() and supplies a key or parameters
+obtained from an untrusted source could be vulnerable to a Denial of
+Service attack.
+
+The function DH_check() is itself called by a number of other OpenSSL
+functions. An application calling any of those other functions may
+similarly be affected. The other functions affected by this are
+DH_check_ex() and EVP_PKEY_param_check().
+
+CVE-2023-3446
+
+Reviewed-by: Paul Dale <pauli@openssl.org>
+Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
+Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/21451)
+
+(cherry picked from commit 9e0094e2aa1b3428a12d5095132f133c078d3c3d)
+---
+ crypto/dh/dh_check.c | 6 ++++++
+ include/openssl/dh.h | 6 +++++-
+ 2 files changed, 11 insertions(+), 1 deletion(-)
+
+diff --git a/crypto/dh/dh_check.c b/crypto/dh/dh_check.c
+index 0b391910d6..84a926998e 100644
+--- a/crypto/dh/dh_check.c
++++ b/crypto/dh/dh_check.c
+@@ -152,6 +152,12 @@ int DH_check(const DH *dh, int *ret)
+     if (nid != NID_undef)
+         return 1;
+ 
++    /* Don't do any checks at all with an excessively large modulus */
++    if (BN_num_bits(dh->params.p) > OPENSSL_DH_CHECK_MAX_MODULUS_BITS) {
++        ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE);
++        return 0;
++    }
++
+     if (!DH_check_params(dh, ret))
+         return 0;
+ 
+diff --git a/include/openssl/dh.h b/include/openssl/dh.h
+index b97871eca7..36420f51d8 100644
+--- a/include/openssl/dh.h
++++ b/include/openssl/dh.h
+@@ -89,7 +89,11 @@ int EVP_PKEY_CTX_get0_dh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm);
+ #  include <openssl/dherr.h>
+ 
+ #  ifndef OPENSSL_DH_MAX_MODULUS_BITS
+-#   define OPENSSL_DH_MAX_MODULUS_BITS    10000
++#   define OPENSSL_DH_MAX_MODULUS_BITS        10000
++#  endif
++
++#  ifndef OPENSSL_DH_CHECK_MAX_MODULUS_BITS
++#   define OPENSSL_DH_CHECK_MAX_MODULUS_BITS  32768
+ #  endif
+ 
+ #  define OPENSSL_DH_FIPS_MIN_MODULUS_BITS 1024
+-- 
+2.27.0
+