Import from AlmaLinux stable repository
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From 94a50a9731f35405f0357fa5f3b177d46a726ab3 Mon Sep 17 00:00:00 2001
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From: Alex Gaynor <alex.gaynor@gmail.com>
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Date: Tue, 31 Jan 2023 08:33:54 -0500
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Subject: [PATCH] Don't allow update_into to mutate immutable objects
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---
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src/cryptography/hazmat/backends/openssl/ciphers.py | 2 +-
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tests/hazmat/primitives/test_ciphers.py | 8 ++++++++
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2 files changed, 9 insertions(+), 1 deletion(-)
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diff --git a/src/cryptography/hazmat/backends/openssl/ciphers.py b/src/cryptography/hazmat/backends/openssl/ciphers.py
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index 286583f9325..075d68fb905 100644
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--- a/src/cryptography/hazmat/backends/openssl/ciphers.py
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+++ b/src/cryptography/hazmat/backends/openssl/ciphers.py
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@@ -156,7 +156,7 @@ def update_into(self, data: bytes, buf: bytes) -> int:
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data_processed = 0
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total_out = 0
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outlen = self._backend._ffi.new("int *")
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- baseoutbuf = self._backend._ffi.from_buffer(buf)
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+ baseoutbuf = self._backend._ffi.from_buffer(buf, require_writable=True)
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baseinbuf = self._backend._ffi.from_buffer(data)
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while data_processed != total_data_len:
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diff --git a/tests/hazmat/primitives/test_ciphers.py b/tests/hazmat/primitives/test_ciphers.py
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index 02127dd9cab..bf3b047dec2 100644
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--- a/tests/hazmat/primitives/test_ciphers.py
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+++ b/tests/hazmat/primitives/test_ciphers.py
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@@ -318,6 +318,14 @@ def test_update_into_buffer_too_small(self, backend):
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with pytest.raises(ValueError):
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encryptor.update_into(b"testing", buf)
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+ def test_update_into_immutable(self, backend):
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+ key = b"\x00" * 16
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+ c = ciphers.Cipher(AES(key), modes.ECB(), backend)
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+ encryptor = c.encryptor()
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+ buf = b"\x00" * 32
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+ with pytest.raises((TypeError, BufferError)):
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+ encryptor.update_into(b"testing", buf)
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+
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@pytest.mark.supported(
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only_if=lambda backend: backend.cipher_supported(
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AES(b"\x00" * 16), modes.GCM(b"\x00" * 12)
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@ -0,0 +1,83 @@
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From ca92d13436944090faa79ffc25378c45ec564a4d Mon Sep 17 00:00:00 2001
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From: Alex Gaynor <alex.gaynor@gmail.com>
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Date: Wed, 14 Dec 2022 01:50:06 -0500
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Subject: [PATCH] Adapt for OpenSSL RSA bleichenbacher mitigation (#7895)
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Attempt to work-around wycheproof tests
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---
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src/_cffi_src/openssl/rsa.py | 8 ++++++++
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tests/hazmat/primitives/test_rsa.py | 5 +++--
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tests/wycheproof/test_rsa.py | 20 +++++++++++++++-----
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3 files changed, 26 insertions(+), 7 deletions(-)
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diff --git a/src/_cffi_src/openssl/rsa.py b/src/_cffi_src/openssl/rsa.py
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index 5d1e163b1..2682ea1e4 100644
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--- a/src/_cffi_src/openssl/rsa.py
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+++ b/src/_cffi_src/openssl/rsa.py
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@@ -18,6 +18,8 @@ static const int RSA_F4;
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static const int Cryptography_HAS_RSA_OAEP_MD;
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static const int Cryptography_HAS_RSA_OAEP_LABEL;
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+
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+static const int Cryptography_HAS_IMPLICIT_RSA_REJECTION;
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"""
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FUNCTIONS = """
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@@ -57,4 +59,10 @@ int (*EVP_PKEY_CTX_set_rsa_oaep_md)(EVP_PKEY_CTX *, EVP_MD *) = NULL;
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int (*EVP_PKEY_CTX_set0_rsa_oaep_label)(EVP_PKEY_CTX *, unsigned char *,
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int) = NULL;
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#endif
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+
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+#if defined(EVP_PKEY_CTRL_RSA_IMPLICIT_REJECTION)
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+static const int Cryptography_HAS_IMPLICIT_RSA_REJECTION = 1;
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+#else
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+static const int Cryptography_HAS_IMPLICIT_RSA_REJECTION = 0;
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+#endif
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"""
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diff --git a/tests/hazmat/primitives/test_rsa.py b/tests/hazmat/primitives/test_rsa.py
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index 4fb205db4..0315489dc 100644
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--- a/tests/hazmat/primitives/test_rsa.py
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+++ b/tests/hazmat/primitives/test_rsa.py
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@@ -1551,8 +1551,9 @@ class TestRSADecryption(object):
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private_key.decrypt(b"0" * 256, DummyAsymmetricPadding())
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@pytest.mark.supported(
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- only_if=lambda backend: backend.rsa_padding_supported(
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- padding.PKCS1v15()
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+ only_if=lambda backend: (
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+ backend.rsa_padding_supported(padding.PKCS1v15())
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+ and not backend._lib.Cryptography_HAS_IMPLICIT_RSA_REJECTION
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),
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skip_message="Does not support PKCS1v1.5.",
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)
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diff --git a/tests/wycheproof/test_rsa.py b/tests/wycheproof/test_rsa.py
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index 79fd682b7..e6bd8af8a 100644
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--- a/tests/wycheproof/test_rsa.py
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+++ b/tests/wycheproof/test_rsa.py
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@@ -245,8 +245,18 @@ def test_rsa_pkcs1_encryption(backend, wycheproof):
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)
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assert pt == binascii.unhexlify(wycheproof.testcase["msg"])
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else:
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- with pytest.raises(ValueError):
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- key.decrypt(
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- binascii.unhexlify(wycheproof.testcase["ct"]),
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- padding.PKCS1v15(),
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- )
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+ if backend._lib.Cryptography_HAS_IMPLICIT_RSA_REJECTION:
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+ try:
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+ assert key.decrypt(
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+ binascii.unhexlify(wycheproof.testcase["ct"]),
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+ padding.PKCS1v15(),
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+ ) != binascii.unhexlify(wycheproof.testcase["ct"])
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+ except ValueError:
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+ # Some raise ValueError due to length mismatch.
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+ pass
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+ else:
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+ with pytest.raises(ValueError):
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+ key.decrypt(
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+ binascii.unhexlify(wycheproof.testcase["ct"]),
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+ padding.PKCS1v15(),
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+ )
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--
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2.40.1
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@ -7,7 +7,7 @@
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Name: python-%{srcname}
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Version: 36.0.1
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Release: 2%{?dist}
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Release: 4%{?dist}
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Summary: PyCA's cryptography library
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License: ASL 2.0 or BSD
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@ -22,6 +22,9 @@ Patch2: 0002-Disable-DSA-tests-in-FIPS-mode-6916.patch
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Patch3: 0003-fixes-6927-handle-negative-return-values-from-openss.patch
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Patch4: 0004-Disable-test_openssl_assert_error_on_stack-in-FIPS-m.patch
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Patch5: 0005-Fixed-serialization-of-keyusage-ext-with-no-bits-693.patch
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# https://github.com/pyca/cryptography/pull/8230
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Patch6: 0006-CVE-2023-23931.patch
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Patch7: 0007-Adapt-for-OpenSSL-RSA-bleichenbacher-mitigation-7895.patch
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ExclusiveArch: %{rust_arches}
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@ -113,9 +116,10 @@ export OPENSSL_ENABLE_SHA1_SIGNATURES=yes
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# see rhbz#2042413 for memleak. It's unstable with openssl 3.0.1 and makes
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# not much sense for downstream testing.
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# see rhbz#2171661 for test_load_invalid_ec_key_from_pem: error:030000CD:digital envelope routines::keymgmt export failure
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PYTHONPATH=${PWD}/vectors:%{buildroot}%{python3_sitearch} \
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%{__python3} -m pytest \
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-k "not (test_openssl_memleak)"
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-k "not (test_openssl_memleak or test_load_ecdsa_no_named_curve)"
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%endif
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%files -n python%{python3_pkgversion}-%{srcname}
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@ -125,6 +129,13 @@ PYTHONPATH=${PWD}/vectors:%{buildroot}%{python3_sitearch} \
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%{python3_sitearch}/%{srcname}-%{version}-py*.egg-info
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%changelog
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* Mon May 15 2023 Christian Heimes <cheimes@redhat.com> - 36.0.1-4
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- Fix FTBFS caused by rsa_pkcs1_implicit_rejection OpenSSL feature, resolves rhbz#2203840
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* Wed Feb 22 2023 Christian Heimes <cheimes@redhat.com> - 36.0.1-3
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- Fix CVE-2023-23931: Don't allow update_into to mutate immutable objects, resolves rhbz#2172399
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- Fix FTBFS due to failing test_load_invalid_ec_key_from_pem and test_decrypt_invalid_decrypt
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* Tue Apr 19 2022 Christian Heimes <cheimes@redhat.com> - 36.0.1-2
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- Rebuild for gating, related: rhbz#2060787
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