diff options
Diffstat (limited to 'runtime-re-enable-implicit-rejection.patch')
| -rw-r--r-- | runtime-re-enable-implicit-rejection.patch | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/runtime-re-enable-implicit-rejection.patch b/runtime-re-enable-implicit-rejection.patch new file mode 100644 index 0000000..d4f0e0f --- /dev/null +++ b/runtime-re-enable-implicit-rejection.patch @@ -0,0 +1,169 @@ +From f55ebb4597a1a931edee16283fc43a4ff33d1029 Mon Sep 17 00:00:00 2001 +From: Omair Majid <omajid@redhat.com> +Date: Fri, 2 Feb 2024 12:23:28 -0500 +Subject: [PATCH] Revert "Disable implicit rejection for RSA PKCS#1 (#95217)" + +This reverts commit a314c5b3580a9fe25c59d917ff0b7594efc6f81f. + +To quote Clemens Lang: + +> [Disabling implcit rejection] re-enables a Bleichenbacher timing oracle +> attack against PKCS#1v1.5 decryption. See +> https://people.redhat.com/~hkario/marvin/ for details and +> https://github.com/dotnet/runtime/pull/95157#issuecomment-1842784399 for a +> comment by the researcher who published the vulnerability and proposed the +> change in OpenSSL. + +For more details, see: +https://github.com/dotnet/runtime/pull/95217#issuecomment-1842799362 +--- + .../RSA/EncryptDecrypt.cs | 49 ++++--------------- + .../opensslshim.h | 6 --- + .../pal_evp_pkey_rsa.c | 13 ----- + 3 files changed, 10 insertions(+), 58 deletions(-) + +diff --git a/src/runtime/src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/RSA/EncryptDecrypt.cs b/src/runtime/src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/RSA/EncryptDecrypt.cs +index 55a044d62a6..e72d42e87d2 100644 +--- a/src/runtime/src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/RSA/EncryptDecrypt.cs ++++ b/src/runtime/src/libraries/Common/tests/System/Security/Cryptography/AlgorithmImplementations/RSA/EncryptDecrypt.cs +@@ -338,10 +338,19 @@ private void RsaCryptRoundtrip(RSAEncryptionPadding paddingMode, bool expectSucc + Assert.Equal(TestData.HelloBytes, output); + } + +- [ConditionalFact(nameof(PlatformSupportsEmptyRSAEncryption))] ++ [ConditionalFact] + [SkipOnTargetFramework(TargetFrameworkMonikers.NetFramework)] + public void RoundtripEmptyArray() + { ++ if (OperatingSystem.IsIOS() && !OperatingSystem.IsIOSVersionAtLeast(13, 6)) ++ { ++ throw new SkipTestException("iOS prior to 13.6 does not reliably support RSA encryption of empty data."); ++ } ++ if (OperatingSystem.IsTvOS() && !OperatingSystem.IsTvOSVersionAtLeast(14, 0)) ++ { ++ throw new SkipTestException("tvOS prior to 14.0 does not reliably support RSA encryption of empty data."); ++ } ++ + using (RSA rsa = RSAFactory.Create(TestData.RSA2048Params)) + { + void RoundtripEmpty(RSAEncryptionPadding paddingMode) +@@ -692,26 +701,6 @@ public void NotSupportedValueMethods() + } + } + +- [ConditionalTheory] +- [InlineData(new byte[] { 1, 2, 3, 4 })] +- [InlineData(new byte[0])] +- public void Decrypt_Pkcs1_ErrorsForInvalidPadding(byte[] data) +- { +- if (data.Length == 0 && !PlatformSupportsEmptyRSAEncryption) +- { +- throw new SkipTestException("Platform does not support RSA encryption of empty data."); +- } +- +- using (RSA rsa = RSAFactory.Create(TestData.RSA2048Params)) +- { +- byte[] encrypted = Encrypt(rsa, data, RSAEncryptionPadding.Pkcs1); +- encrypted[1] ^= 0xFF; +- +- // PKCS#1, the data, and the key are all deterministic so this should always throw an exception. +- Assert.ThrowsAny<CryptographicException>(() => Decrypt(rsa, encrypted, RSAEncryptionPadding.Pkcs1)); +- } +- } +- + [Fact] + public void Decrypt_Pkcs1_BadPadding() + { +@@ -726,23 +715,5 @@ public static IEnumerable<object[]> OaepPaddingModes + } + } + } +- +- public static bool PlatformSupportsEmptyRSAEncryption +- { +- get +- { +- if (OperatingSystem.IsIOS() && !OperatingSystem.IsIOSVersionAtLeast(13, 6)) +- { +- return false; +- } +- +- if (OperatingSystem.IsTvOS() && !OperatingSystem.IsTvOSVersionAtLeast(14, 0)) +- { +- return false; +- } +- +- return true; +- } +- } + } + } +diff --git a/src/runtime/src/native/libs/System.Security.Cryptography.Native/opensslshim.h b/src/runtime/src/native/libs/System.Security.Cryptography.Native/opensslshim.h +index 7d5ec84cc7d..efc0d470602 100644 +--- a/src/runtime/src/native/libs/System.Security.Cryptography.Native/opensslshim.h ++++ b/src/runtime/src/native/libs/System.Security.Cryptography.Native/opensslshim.h +@@ -276,10 +276,8 @@ const EVP_CIPHER* EVP_chacha20_poly1305(void); + REQUIRED_FUNCTION(ERR_peek_error) \ + REQUIRED_FUNCTION(ERR_peek_error_line) \ + REQUIRED_FUNCTION(ERR_peek_last_error) \ +- REQUIRED_FUNCTION(ERR_pop_to_mark) \ + FALLBACK_FUNCTION(ERR_put_error) \ + REQUIRED_FUNCTION(ERR_reason_error_string) \ +- REQUIRED_FUNCTION(ERR_set_mark) \ + LIGHTUP_FUNCTION(ERR_set_debug) \ + LIGHTUP_FUNCTION(ERR_set_error) \ + REQUIRED_FUNCTION(EVP_aes_128_cbc) \ +@@ -334,7 +332,6 @@ const EVP_CIPHER* EVP_chacha20_poly1305(void); + REQUIRED_FUNCTION(EVP_PKCS82PKEY) \ + REQUIRED_FUNCTION(EVP_PKEY2PKCS8) \ + REQUIRED_FUNCTION(EVP_PKEY_CTX_ctrl) \ +- REQUIRED_FUNCTION(EVP_PKEY_CTX_ctrl_str) \ + REQUIRED_FUNCTION(EVP_PKEY_CTX_free) \ + REQUIRED_FUNCTION(EVP_PKEY_CTX_get0_pkey) \ + REQUIRED_FUNCTION(EVP_PKEY_CTX_new) \ +@@ -761,10 +758,8 @@ FOR_ALL_OPENSSL_FUNCTIONS + #define ERR_peek_error_line ERR_peek_error_line_ptr + #define ERR_peek_last_error ERR_peek_last_error_ptr + #define ERR_put_error ERR_put_error_ptr +-#define ERR_pop_to_mark ERR_pop_to_mark_ptr + #define ERR_reason_error_string ERR_reason_error_string_ptr + #define ERR_set_debug ERR_set_debug_ptr +-#define ERR_set_mark ERR_set_mark_ptr + #define ERR_set_error ERR_set_error_ptr + #define EVP_aes_128_cbc EVP_aes_128_cbc_ptr + #define EVP_aes_128_cfb8 EVP_aes_128_cfb8_ptr +@@ -818,7 +813,6 @@ FOR_ALL_OPENSSL_FUNCTIONS + #define EVP_PKCS82PKEY EVP_PKCS82PKEY_ptr + #define EVP_PKEY2PKCS8 EVP_PKEY2PKCS8_ptr + #define EVP_PKEY_CTX_ctrl EVP_PKEY_CTX_ctrl_ptr +-#define EVP_PKEY_CTX_ctrl_str EVP_PKEY_CTX_ctrl_str_ptr + #define EVP_PKEY_CTX_free EVP_PKEY_CTX_free_ptr + #define EVP_PKEY_CTX_get0_pkey EVP_PKEY_CTX_get0_pkey_ptr + #define EVP_PKEY_CTX_new EVP_PKEY_CTX_new_ptr +diff --git a/src/runtime/src/native/libs/System.Security.Cryptography.Native/pal_evp_pkey_rsa.c b/src/runtime/src/native/libs/System.Security.Cryptography.Native/pal_evp_pkey_rsa.c +index 043bf9f9d1e..c9ccdf33e3a 100644 +--- a/src/runtime/src/native/libs/System.Security.Cryptography.Native/pal_evp_pkey_rsa.c ++++ b/src/runtime/src/native/libs/System.Security.Cryptography.Native/pal_evp_pkey_rsa.c +@@ -67,19 +67,6 @@ static bool ConfigureEncryption(EVP_PKEY_CTX* ctx, RsaPaddingMode padding, const + { + return false; + } +- +- // OpenSSL 3.2 introduced a change where PKCS#1 RSA decryption does not fail for invalid padding. +- // If the padding is invalid, the decryption operation returns random data. +- // See https://github.com/openssl/openssl/pull/13817 for background. +- // Some Linux distributions backported this change to previous versions of OpenSSL. +- // Here we do a best-effort to set a flag to revert the behavior to failing if the padding is invalid. +- ERR_set_mark(); +- +- EVP_PKEY_CTX_ctrl_str(ctx, "rsa_pkcs1_implicit_rejection", "0"); +- +- // Undo any changes to the error queue that may have occured while configuring implicit rejection if the +- // current version does not support implicit rejection. +- ERR_pop_to_mark(); + } + else + { +-- +2.43.0 + |