From 10b0447cc2da0008d2b7c3c5cbba5ed1310f079e Mon Sep 17 00:00:00 2001 From: "li.longjiang" Date: Tue, 21 Mar 2023 10:20:23 +0800 Subject: [PATCH 1/2] Fix Timing Oracle in RSA decryption MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ANBZ: #4550 commit 43d8f88511991533f53680a751e9326999a6a31f upstream Fix Timing Oracle in RSA decryption A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. Patch written by Dmitry Belyavsky and Hubert Kario CVE-2022-4304 Signed-off-by: Matt Caswell Fixes:cve-2022-4304 Reviewed-by: Dmitry Belyavskiy Reviewed-by: Tomas Mraz Signed-off-by: 李龙江 --- openssl-1.1.1-cve-2022-4304-RSA-oracle.patch | 805 +++++++++++++++++++ openssl.spec | 9 +- 2 files changed, 813 insertions(+), 1 deletion(-) create mode 100644 openssl-1.1.1-cve-2022-4304-RSA-oracle.patch diff --git a/openssl-1.1.1-cve-2022-4304-RSA-oracle.patch b/openssl-1.1.1-cve-2022-4304-RSA-oracle.patch new file mode 100644 index 0000000..9a888a6 --- /dev/null +++ b/openssl-1.1.1-cve-2022-4304-RSA-oracle.patch @@ -0,0 +1,805 @@ +From 43d8f88511991533f53680a751e9326999a6a31f Mon Sep 17 00:00:00 2001 +From: Matt Caswell +Date: Fri, 20 Jan 2023 15:26:54 +0000 +Subject: [PATCH 1/6] Fix Timing Oracle in RSA decryption + +A timing based side channel exists in the OpenSSL RSA Decryption +implementation which could be sufficient to recover a plaintext across +a network in a Bleichenbacher style attack. To achieve a successful +decryption an attacker would have to be able to send a very large number +of trial messages for decryption. The vulnerability affects all RSA +padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. + +Patch written by Dmitry Belyavsky and Hubert Kario + +CVE-2022-4304 + +Reviewed-by: Dmitry Belyavskiy +Reviewed-by: Tomas Mraz +--- + crypto/bn/bn_blind.c | 14 - + crypto/bn/bn_err.c | 2 + + crypto/bn/bn_local.h | 14 + + crypto/bn/build.info | 3 +- + crypto/bn/rsa_sup_mul.c | 614 ++++++++++++++++++++++++++++++++++++++++ + crypto/err/openssl.txt | 3 +- + crypto/rsa/rsa_ossl.c | 17 +- + include/crypto/bn.h | 5 + + include/openssl/bnerr.h | 1 + + 9 files changed, 653 insertions(+), 20 deletions(-) + create mode 100644 crypto/bn/rsa_sup_mul.c + +diff --git a/crypto/bn/bn_blind.c b/crypto/bn/bn_blind.c +index 76fc7ebcff..6e9d239321 100644 +--- a/crypto/bn/bn_blind.c ++++ b/crypto/bn/bn_blind.c +@@ -13,20 +13,6 @@ + + #define BN_BLINDING_COUNTER 32 + +-struct bn_blinding_st { +- BIGNUM *A; +- BIGNUM *Ai; +- BIGNUM *e; +- BIGNUM *mod; /* just a reference */ +- CRYPTO_THREAD_ID tid; +- int counter; +- unsigned long flags; +- BN_MONT_CTX *m_ctx; +- int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p, +- const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); +- CRYPTO_RWLOCK *lock; +-}; +- + BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod) + { + BN_BLINDING *ret = NULL; +diff --git a/crypto/bn/bn_err.c b/crypto/bn/bn_err.c +index dd87c152cf..3dd8d9a568 100644 +--- a/crypto/bn/bn_err.c ++++ b/crypto/bn/bn_err.c +@@ -73,6 +73,8 @@ static const ERR_STRING_DATA BN_str_functs[] = { + {ERR_PACK(ERR_LIB_BN, BN_F_BN_SET_WORDS, 0), "bn_set_words"}, + {ERR_PACK(ERR_LIB_BN, BN_F_BN_STACK_PUSH, 0), "BN_STACK_push"}, + {ERR_PACK(ERR_LIB_BN, BN_F_BN_USUB, 0), "BN_usub"}, ++ {ERR_PACK(ERR_LIB_BN, BN_F_OSSL_BN_RSA_DO_UNBLIND, 0), ++ "ossl_bn_rsa_do_unblind"}, + {0, NULL} + }; + +diff --git a/crypto/bn/bn_local.h b/crypto/bn/bn_local.h +index 62a969b134..4d8cb64675 100644 +--- a/crypto/bn/bn_local.h ++++ b/crypto/bn/bn_local.h +@@ -283,6 +283,20 @@ struct bn_gencb_st { + } cb; + }; + ++struct bn_blinding_st { ++ BIGNUM *A; ++ BIGNUM *Ai; ++ BIGNUM *e; ++ BIGNUM *mod; /* just a reference */ ++ CRYPTO_THREAD_ID tid; ++ int counter; ++ unsigned long flags; ++ BN_MONT_CTX *m_ctx; ++ int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p, ++ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); ++ CRYPTO_RWLOCK *lock; ++}; ++ + /*- + * BN_window_bits_for_exponent_size -- macro for sliding window mod_exp functions + * +diff --git a/crypto/bn/build.info b/crypto/bn/build.info +index b9ed5322fa..c9fe2fdada 100644 +--- a/crypto/bn/build.info ++++ b/crypto/bn/build.info +@@ -5,7 +5,8 @@ SOURCE[../../libcrypto]=\ + bn_kron.c bn_sqrt.c bn_gcd.c bn_prime.c bn_err.c bn_sqr.c \ + {- $target{bn_asm_src} -} \ + bn_recp.c bn_mont.c bn_mpi.c bn_exp2.c bn_gf2m.c bn_nist.c \ +- bn_depr.c bn_const.c bn_x931p.c bn_intern.c bn_dh.c bn_srp.c ++ bn_depr.c bn_const.c bn_x931p.c bn_intern.c bn_dh.c bn_srp.c \ ++ rsa_sup_mul.c + + INCLUDE[bn_exp.o]=.. + +diff --git a/crypto/bn/rsa_sup_mul.c b/crypto/bn/rsa_sup_mul.c +new file mode 100644 +index 0000000000..acafefd5fe +--- /dev/null ++++ b/crypto/bn/rsa_sup_mul.c +@@ -0,0 +1,614 @@ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include "internal/numbers.h" ++#include "internal/constant_time.h" ++#include "bn_local.h" ++ ++# if BN_BYTES == 8 ++typedef uint64_t limb_t; ++# if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16 ++/* nonstandard; implemented by gcc on 64-bit platforms */ ++typedef __uint128_t limb2_t; ++# define HAVE_LIMB2_T ++# endif ++# define LIMB_BIT_SIZE 64 ++# define LIMB_BYTE_SIZE 8 ++# elif BN_BYTES == 4 ++typedef uint32_t limb_t; ++typedef uint64_t limb2_t; ++# define LIMB_BIT_SIZE 32 ++# define LIMB_BYTE_SIZE 4 ++# define HAVE_LIMB2_T ++# else ++# error "Not supported" ++# endif ++ ++/* ++ * For multiplication we're using schoolbook multiplication, ++ * so if we have two numbers, each with 6 "digits" (words) ++ * the multiplication is calculated as follows: ++ * A B C D E F ++ * x I J K L M N ++ * -------------- ++ * N*F ++ * N*E ++ * N*D ++ * N*C ++ * N*B ++ * N*A ++ * M*F ++ * M*E ++ * M*D ++ * M*C ++ * M*B ++ * M*A ++ * L*F ++ * L*E ++ * L*D ++ * L*C ++ * L*B ++ * L*A ++ * K*F ++ * K*E ++ * K*D ++ * K*C ++ * K*B ++ * K*A ++ * J*F ++ * J*E ++ * J*D ++ * J*C ++ * J*B ++ * J*A ++ * I*F ++ * I*E ++ * I*D ++ * I*C ++ * I*B ++ * + I*A ++ * ========================== ++ * N*B N*D N*F ++ * + N*A N*C N*E ++ * + M*B M*D M*F ++ * + M*A M*C M*E ++ * + L*B L*D L*F ++ * + L*A L*C L*E ++ * + K*B K*D K*F ++ * + K*A K*C K*E ++ * + J*B J*D J*F ++ * + J*A J*C J*E ++ * + I*B I*D I*F ++ * + I*A I*C I*E ++ * ++ * 1+1 1+3 1+5 ++ * 1+0 1+2 1+4 ++ * 0+1 0+3 0+5 ++ * 0+0 0+2 0+4 ++ * ++ * 0 1 2 3 4 5 6 ++ * which requires n^2 multiplications and 2n full length additions ++ * as we can keep every other result of limb multiplication in two separate ++ * limbs ++ */ ++ ++#if defined HAVE_LIMB2_T ++static ossl_inline void _mul_limb(limb_t *hi, limb_t *lo, limb_t a, limb_t b) ++{ ++ limb2_t t; ++ /* ++ * this is idiomatic code to tell compiler to use the native mul ++ * those three lines will actually compile to single instruction ++ */ ++ ++ t = (limb2_t)a * b; ++ *hi = t >> LIMB_BIT_SIZE; ++ *lo = (limb_t)t; ++} ++#elif (BN_BYTES == 8) && (defined _MSC_VER) ++/* https://learn.microsoft.com/en-us/cpp/intrinsics/umul128?view=msvc-170 */ ++#pragma intrinsic(_umul128) ++static ossl_inline void _mul_limb(limb_t *hi, limb_t *lo, limb_t a, limb_t b) ++{ ++ *lo = _umul128(a, b, hi); ++} ++#else ++/* ++ * if the compiler doesn't have either a 128bit data type nor a "return ++ * high 64 bits of multiplication" ++ */ ++static ossl_inline void _mul_limb(limb_t *hi, limb_t *lo, limb_t a, limb_t b) ++{ ++ limb_t a_low = (limb_t)(uint32_t)a; ++ limb_t a_hi = a >> 32; ++ limb_t b_low = (limb_t)(uint32_t)b; ++ limb_t b_hi = b >> 32; ++ ++ limb_t p0 = a_low * b_low; ++ limb_t p1 = a_low * b_hi; ++ limb_t p2 = a_hi * b_low; ++ limb_t p3 = a_hi * b_hi; ++ ++ uint32_t cy = (uint32_t)(((p0 >> 32) + (uint32_t)p1 + (uint32_t)p2) >> 32); ++ ++ *lo = p0 + (p1 << 32) + (p2 << 32); ++ *hi = p3 + (p1 >> 32) + (p2 >> 32) + cy; ++} ++#endif ++ ++/* add two limbs with carry in, return carry out */ ++static ossl_inline limb_t _add_limb(limb_t *ret, limb_t a, limb_t b, limb_t carry) ++{ ++ limb_t carry1, carry2, t; ++ /* ++ * `c = a + b; if (c < a)` is idiomatic code that makes compilers ++ * use add with carry on assembly level ++ */ ++ ++ *ret = a + carry; ++ if (*ret < a) ++ carry1 = 1; ++ else ++ carry1 = 0; ++ ++ t = *ret; ++ *ret = t + b; ++ if (*ret < t) ++ carry2 = 1; ++ else ++ carry2 = 0; ++ ++ return carry1 + carry2; ++} ++ ++/* ++ * add two numbers of the same size, return overflow ++ * ++ * add a to b, place result in ret; all arrays need to be n limbs long ++ * return overflow from addition (0 or 1) ++ */ ++static ossl_inline limb_t add(limb_t *ret, limb_t *a, limb_t *b, size_t n) ++{ ++ limb_t c = 0; ++ ossl_ssize_t i; ++ ++ for(i = n - 1; i > -1; i--) ++ c = _add_limb(&ret[i], a[i], b[i], c); ++ ++ return c; ++} ++ ++/* ++ * return number of limbs necessary for temporary values ++ * when multiplying numbers n limbs large ++ */ ++static ossl_inline size_t mul_limb_numb(size_t n) ++{ ++ return 2 * n * 2; ++} ++ ++/* ++ * multiply two numbers of the same size ++ * ++ * multiply a by b, place result in ret; a and b need to be n limbs long ++ * ret needs to be 2*n limbs long, tmp needs to be mul_limb_numb(n) limbs ++ * long ++ */ ++static void limb_mul(limb_t *ret, limb_t *a, limb_t *b, size_t n, limb_t *tmp) ++{ ++ limb_t *r_odd, *r_even; ++ size_t i, j, k; ++ ++ r_odd = tmp; ++ r_even = &tmp[2 * n]; ++ ++ memset(ret, 0, 2 * n * sizeof(limb_t)); ++ ++ for (i = 0; i < n; i++) { ++ for (k = 0; k < i + n + 1; k++) { ++ r_even[k] = 0; ++ r_odd[k] = 0; ++ } ++ for (j = 0; j < n; j++) { ++ /* ++ * place results from even and odd limbs in separate arrays so that ++ * we don't have to calculate overflow every time we get individual ++ * limb multiplication result ++ */ ++ if (j % 2 == 0) ++ _mul_limb(&r_even[i + j], &r_even[i + j + 1], a[i], b[j]); ++ else ++ _mul_limb(&r_odd[i + j], &r_odd[i + j + 1], a[i], b[j]); ++ } ++ /* ++ * skip the least significant limbs when adding multiples of ++ * more significant limbs (they're zero anyway) ++ */ ++ add(ret, ret, r_even, n + i + 1); ++ add(ret, ret, r_odd, n + i + 1); ++ } ++} ++ ++/* modifies the value in place by performing a right shift by one bit */ ++static ossl_inline void rshift1(limb_t *val, size_t n) ++{ ++ limb_t shift_in = 0, shift_out = 0; ++ size_t i; ++ ++ for (i = 0; i < n; i++) { ++ shift_out = val[i] & 1; ++ val[i] = shift_in << (LIMB_BIT_SIZE - 1) | (val[i] >> 1); ++ shift_in = shift_out; ++ } ++} ++ ++/* extend the LSB of flag to all bits of limb */ ++static ossl_inline limb_t mk_mask(limb_t flag) ++{ ++ flag |= flag << 1; ++ flag |= flag << 2; ++ flag |= flag << 4; ++ flag |= flag << 8; ++ flag |= flag << 16; ++#if (LIMB_BYTE_SIZE == 8) ++ flag |= flag << 32; ++#endif ++ return flag; ++} ++ ++/* ++ * copy from either a or b to ret based on flag ++ * when flag == 0, then copies from b ++ * when flag == 1, then copies from a ++ */ ++static ossl_inline void cselect(limb_t flag, limb_t *ret, limb_t *a, limb_t *b, size_t n) ++{ ++ /* ++ * would be more efficient with non volatile mask, but then gcc ++ * generates code with jumps ++ */ ++ volatile limb_t mask; ++ size_t i; ++ ++ mask = mk_mask(flag); ++ for (i = 0; i < n; i++) { ++#if (LIMB_BYTE_SIZE == 8) ++ ret[i] = constant_time_select_64(mask, a[i], b[i]); ++#else ++ ret[i] = constant_time_select_32(mask, a[i], b[i]); ++#endif ++ } ++} ++ ++static limb_t _sub_limb(limb_t *ret, limb_t a, limb_t b, limb_t borrow) ++{ ++ limb_t borrow1, borrow2, t; ++ /* ++ * while it doesn't look constant-time, this is idiomatic code ++ * to tell compilers to use the carry bit from subtraction ++ */ ++ ++ *ret = a - borrow; ++ if (*ret > a) ++ borrow1 = 1; ++ else ++ borrow1 = 0; ++ ++ t = *ret; ++ *ret = t - b; ++ if (*ret > t) ++ borrow2 = 1; ++ else ++ borrow2 = 0; ++ ++ return borrow1 + borrow2; ++} ++ ++/* ++ * place the result of a - b into ret, return the borrow bit. ++ * All arrays need to be n limbs long ++ */ ++static limb_t sub(limb_t *ret, limb_t *a, limb_t *b, size_t n) ++{ ++ limb_t borrow = 0; ++ ossl_ssize_t i; ++ ++ for (i = n - 1; i > -1; i--) ++ borrow = _sub_limb(&ret[i], a[i], b[i], borrow); ++ ++ return borrow; ++} ++ ++/* return the number of limbs necessary to allocate for the mod() tmp operand */ ++static ossl_inline size_t mod_limb_numb(size_t anum, size_t modnum) ++{ ++ return (anum + modnum) * 3; ++} ++ ++/* ++ * calculate a % mod, place the result in ret ++ * size of a is defined by anum, size of ret and mod is modnum, ++ * size of tmp is returned by mod_limb_numb() ++ */ ++static void mod(limb_t *ret, limb_t *a, size_t anum, limb_t *mod, ++ size_t modnum, limb_t *tmp) ++{ ++ limb_t *atmp, *modtmp, *rettmp; ++ limb_t res; ++ size_t i; ++ ++ memset(tmp, 0, mod_limb_numb(anum, modnum) * LIMB_BYTE_SIZE); ++ ++ atmp = tmp; ++ modtmp = &tmp[anum + modnum]; ++ rettmp = &tmp[(anum + modnum) * 2]; ++ ++ for (i = modnum; i 0; i--, rp--) { ++ v = _mul_add_limb(rp, mod, modnum, rp[modnum - 1] * ni0, tmp2); ++ v = v + carry + rp[-1]; ++ carry |= (v != rp[-1]); ++ carry &= (v <= rp[-1]); ++ rp[-1] = v; ++ } ++ ++ /* perform the final reduction by mod... */ ++ carry -= sub(ret, rp, mod, modnum); ++ ++ /* ...conditionally */ ++ cselect(carry, ret, rp, ret, modnum); ++} ++ ++/* allocated buffer should be freed afterwards */ ++static void BN_to_limb(const BIGNUM *bn, limb_t *buf, size_t limbs) ++{ ++ int i; ++ int real_limbs = (BN_num_bytes(bn) + LIMB_BYTE_SIZE - 1) / LIMB_BYTE_SIZE; ++ limb_t *ptr = buf + (limbs - real_limbs); ++ ++ for (i = 0; i < real_limbs; i++) ++ ptr[i] = bn->d[real_limbs - i - 1]; ++} ++ ++#if LIMB_BYTE_SIZE == 8 ++static ossl_inline uint64_t be64(uint64_t host) ++{ ++ const union { ++ long one; ++ char little; ++ } is_endian = { 1 }; ++ ++ if (is_endian.little) { ++ uint64_t big = 0; ++ ++ big |= (host & 0xff00000000000000) >> 56; ++ big |= (host & 0x00ff000000000000) >> 40; ++ big |= (host & 0x0000ff0000000000) >> 24; ++ big |= (host & 0x000000ff00000000) >> 8; ++ big |= (host & 0x00000000ff000000) << 8; ++ big |= (host & 0x0000000000ff0000) << 24; ++ big |= (host & 0x000000000000ff00) << 40; ++ big |= (host & 0x00000000000000ff) << 56; ++ return big; ++ } else { ++ return host; ++ } ++} ++ ++#else ++/* Not all platforms have htobe32(). */ ++static ossl_inline uint32_t be32(uint32_t host) ++{ ++ const union { ++ long one; ++ char little; ++ } is_endian = { 1 }; ++ ++ if (is_endian.little) { ++ uint32_t big = 0; ++ ++ big |= (host & 0xff000000) >> 24; ++ big |= (host & 0x00ff0000) >> 8; ++ big |= (host & 0x0000ff00) << 8; ++ big |= (host & 0x000000ff) << 24; ++ return big; ++ } else { ++ return host; ++ } ++} ++#endif ++ ++/* ++ * We assume that intermediate, possible_arg2, blinding, and ctx are used ++ * similar to BN_BLINDING_invert_ex() arguments. ++ * to_mod is RSA modulus. ++ * buf and num is the serialization buffer and its length. ++ * ++ * Here we use classic/Montgomery multiplication and modulo. After the calculation finished ++ * we serialize the new structure instead of BIGNUMs taking endianness into account. ++ */ ++int ossl_bn_rsa_do_unblind(const BIGNUM *intermediate, ++ const BN_BLINDING *blinding, ++ const BIGNUM *possible_arg2, ++ const BIGNUM *to_mod, BN_CTX *ctx, ++ unsigned char *buf, int num) ++{ ++ limb_t *l_im = NULL, *l_mul = NULL, *l_mod = NULL; ++ limb_t *l_ret = NULL, *l_tmp = NULL, l_buf; ++ size_t l_im_count = 0, l_mul_count = 0, l_size = 0, l_mod_count = 0; ++ size_t l_tmp_count = 0; ++ int ret = 0; ++ size_t i; ++ unsigned char *tmp; ++ const BIGNUM *arg1 = intermediate; ++ const BIGNUM *arg2 = (possible_arg2 == NULL) ? blinding->Ai : possible_arg2; ++ ++ l_im_count = (BN_num_bytes(arg1) + LIMB_BYTE_SIZE - 1) / LIMB_BYTE_SIZE; ++ l_mul_count = (BN_num_bytes(arg2) + LIMB_BYTE_SIZE - 1) / LIMB_BYTE_SIZE; ++ l_mod_count = (BN_num_bytes(to_mod) + LIMB_BYTE_SIZE - 1) / LIMB_BYTE_SIZE; ++ ++ l_size = l_im_count > l_mul_count ? l_im_count : l_mul_count; ++ l_im = OPENSSL_zalloc(l_size * LIMB_BYTE_SIZE); ++ l_mul = OPENSSL_zalloc(l_size * LIMB_BYTE_SIZE); ++ l_mod = OPENSSL_zalloc(l_mod_count * LIMB_BYTE_SIZE); ++ ++ if ((l_im == NULL) || (l_mul == NULL) || (l_mod == NULL)) ++ goto err; ++ ++ BN_to_limb(arg1, l_im, l_size); ++ BN_to_limb(arg2, l_mul, l_size); ++ BN_to_limb(to_mod, l_mod, l_mod_count); ++ ++ l_ret = OPENSSL_malloc(2 * l_size * LIMB_BYTE_SIZE); ++ ++ if (blinding->m_ctx != NULL) { ++ l_tmp_count = mul_limb_numb(l_size) > mod_montgomery_limb_numb(l_mod_count) ? ++ mul_limb_numb(l_size) : mod_montgomery_limb_numb(l_mod_count); ++ l_tmp = OPENSSL_malloc(l_tmp_count * LIMB_BYTE_SIZE); ++ } else { ++ l_tmp_count = mul_limb_numb(l_size) > mod_limb_numb(2 * l_size, l_mod_count) ? ++ mul_limb_numb(l_size) : mod_limb_numb(2 * l_size, l_mod_count); ++ l_tmp = OPENSSL_malloc(l_tmp_count * LIMB_BYTE_SIZE); ++ } ++ ++ if ((l_ret == NULL) || (l_tmp == NULL)) ++ goto err; ++ ++ if (blinding->m_ctx != NULL) { ++ limb_mul(l_ret, l_im, l_mul, l_size, l_tmp); ++ mod_montgomery(l_ret, l_ret, 2 * l_size, l_mod, l_mod_count, ++ blinding->m_ctx->n0[0], l_tmp); ++ } else { ++ limb_mul(l_ret, l_im, l_mul, l_size, l_tmp); ++ mod(l_ret, l_ret, 2 * l_size, l_mod, l_mod_count, l_tmp); ++ } ++ ++ /* modulus size in bytes can be equal to num but after limbs conversion it becomes bigger */ ++ if (num < BN_num_bytes(to_mod)) { ++ BNerr(BN_F_OSSL_BN_RSA_DO_UNBLIND, ERR_R_PASSED_INVALID_ARGUMENT); ++ goto err; ++ } ++ ++ memset(buf, 0, num); ++ tmp = buf + num - BN_num_bytes(to_mod); ++ for (i = 0; i < l_mod_count; i++) { ++#if LIMB_BYTE_SIZE == 8 ++ l_buf = be64(l_ret[i]); ++#else ++ l_buf = be32(l_ret[i]); ++#endif ++ if (i == 0) { ++ int delta = LIMB_BYTE_SIZE - ((l_mod_count * LIMB_BYTE_SIZE) - num); ++ ++ memcpy(tmp, ((char *)&l_buf) + LIMB_BYTE_SIZE - delta, delta); ++ tmp += delta; ++ } else { ++ memcpy(tmp, &l_buf, LIMB_BYTE_SIZE); ++ tmp += LIMB_BYTE_SIZE; ++ } ++ } ++ ret = num; ++ ++ err: ++ OPENSSL_free(l_im); ++ OPENSSL_free(l_mul); ++ OPENSSL_free(l_mod); ++ OPENSSL_free(l_tmp); ++ OPENSSL_free(l_ret); ++ ++ return ret; ++} +diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt +index 9f91a4a811..ba3a46d5b9 100644 +--- a/crypto/err/openssl.txt ++++ b/crypto/err/openssl.txt +@@ -1,4 +1,4 @@ +-# Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved. ++# Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved. + # + # Licensed under the OpenSSL license (the "License"). You may not use + # this file except in compliance with the License. You can obtain a copy +@@ -232,6 +232,7 @@ BN_F_BN_RSHIFT:146:BN_rshift + BN_F_BN_SET_WORDS:144:bn_set_words + BN_F_BN_STACK_PUSH:148:BN_STACK_push + BN_F_BN_USUB:115:BN_usub ++BN_F_OSSL_BN_RSA_DO_UNBLIND:151:ossl_bn_rsa_do_unblind + BUF_F_BUF_MEM_GROW:100:BUF_MEM_grow + BUF_F_BUF_MEM_GROW_CLEAN:105:BUF_MEM_grow_clean + BUF_F_BUF_MEM_NEW:101:BUF_MEM_new +diff --git a/crypto/rsa/rsa_ossl.c b/crypto/rsa/rsa_ossl.c +index b52a66f6a6..6c3c0cf78d 100644 +--- a/crypto/rsa/rsa_ossl.c ++++ b/crypto/rsa/rsa_ossl.c +@@ -465,11 +465,20 @@ static int rsa_ossl_private_decrypt(int flen, const unsigned char *from, + BN_free(d); + } + +- if (blinding) +- if (!rsa_blinding_invert(blinding, ret, unblind, ctx)) ++ if (blinding) { ++ /* ++ * ossl_bn_rsa_do_unblind() combines blinding inversion and ++ * 0-padded BN BE serialization ++ */ ++ j = ossl_bn_rsa_do_unblind(ret, blinding, unblind, rsa->n, ctx, ++ buf, num); ++ if (j == 0) + goto err; +- +- j = BN_bn2binpad(ret, buf, num); ++ } else { ++ j = BN_bn2binpad(ret, buf, num); ++ if (j < 0) ++ goto err; ++ } + + switch (padding) { + case RSA_PKCS1_PADDING: +diff --git a/include/crypto/bn.h b/include/crypto/bn.h +index 60afda1dad..b5f36fb25a 100644 +--- a/include/crypto/bn.h ++++ b/include/crypto/bn.h +@@ -86,5 +86,10 @@ int bn_lshift_fixed_top(BIGNUM *r, const BIGNUM *a, int n); + int bn_rshift_fixed_top(BIGNUM *r, const BIGNUM *a, int n); + int bn_div_fixed_top(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, + const BIGNUM *d, BN_CTX *ctx); ++int ossl_bn_rsa_do_unblind(const BIGNUM *intermediate, ++ const BN_BLINDING *blinding, ++ const BIGNUM *possible_arg2, ++ const BIGNUM *to_mod, BN_CTX *ctx, ++ unsigned char *buf, int num); + + #endif +diff --git a/include/openssl/bnerr.h b/include/openssl/bnerr.h +index 9f3c7cfaab..a0752cea52 100644 +--- a/include/openssl/bnerr.h ++++ b/include/openssl/bnerr.h +@@ -72,6 +72,7 @@ int ERR_load_BN_strings(void); + # define BN_F_BN_SET_WORDS 144 + # define BN_F_BN_STACK_PUSH 148 + # define BN_F_BN_USUB 115 ++# define BN_F_OSSL_BN_RSA_DO_UNBLIND 151 + + /* + * BN reason codes. +-- +2.39.1 + diff --git a/openssl.spec b/openssl.spec index 4d76f76..9fbb26d 100644 --- a/openssl.spec +++ b/openssl.spec @@ -23,7 +23,7 @@ Summary: Utilities from the general purpose cryptography library with TLS implementation Name: openssl Version: 1.1.1k -Release: 7%{anolis_release}%{?dist} +Release: 8%{anolis_release}%{?dist} Epoch: 1 # We have to remove certain patented algorithms from the openssl source # tarball with the hobble-openssl script which is included below. @@ -90,6 +90,8 @@ Patch85: openssl-1.1.1-cve-2022-2068.patch Patch86: openssl-1.1.1-cve-2022-2097.patch # SM2 distid for sign and verify Patch87: openssl-1.1.1-sm2-sign-verify.patch +#OpenSSL 1.1.1t CVEs +Patch101: openssl-1.1.1-cve-2022-4304-RSA-oracle.patc License: OpenSSL and ASL 2.0 URL: http://www.openssl.org/ @@ -216,6 +218,7 @@ cp %{SOURCE13} test/ %patch85 -p1 -b .cve-2022-2068 %patch86 -p1 -b .cve-2022-2097 %patch87 -p1 -b .sm2-sign-verify +%patch101 -p1 -b .cve-2022-4304 %build # Figure out which flags we want to use. @@ -504,6 +507,10 @@ export LD_LIBRARY_PATH %postun libs -p /sbin/ldconfig %changelog +* Wed Feb 08 2023 Dmitry Belyavskiy - 1:1.1.1k-9 +- Fixed Timing Oracle in RSA Decryption + Resolves: CVE-2022-4304 + * Mon Nov 28 2022 Tianjia Zhang - 1:1.1.1k-7.0.2 - Support SM2 distid for sign and verify -- Gitee From a905fe6e7ebb9ddd635f7b0f38e77a0dd90c8a84 Mon Sep 17 00:00:00 2001 From: "li.longjiang" Date: Tue, 21 Mar 2023 13:08:52 +0000 Subject: [PATCH 2/2] update openssl.spec. Signed-off-by: li.longjiang --- openssl.spec | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/openssl.spec b/openssl.spec index 9fbb26d..42aa76f 100644 --- a/openssl.spec +++ b/openssl.spec @@ -91,7 +91,7 @@ Patch86: openssl-1.1.1-cve-2022-2097.patch # SM2 distid for sign and verify Patch87: openssl-1.1.1-sm2-sign-verify.patch #OpenSSL 1.1.1t CVEs -Patch101: openssl-1.1.1-cve-2022-4304-RSA-oracle.patc +Patch101: openssl-1.1.1-cve-2022-4304-RSA-oracle.patch License: OpenSSL and ASL 2.0 URL: http://www.openssl.org/ -- Gitee