From: Kai Kang <kai.kang@...>

Backport patch to fix CVE-2020-25657 for python3-m2crypto. Adjust indent
as well.

Remove duplicate 'Upstream-Status:' from avoid-host-contamination.patch.

Add swig option '-DOPENSSL_FILE' to fix buildpaths qa issues.

WARNING: python3-m2crypto-0.38.0-r0 do_package_qa: QA Issue: File
/usr/lib/python3.11/site-packages/M2Crypto/_m2crypto.cpython-311-x86_64-linux-gnu.so
in package python3-m2crypto contains reference to TMPDIR [buildpaths]

Signed-off-by: Kai Kang <kai.kang@...>
---
.../python3-m2crypto/CVE-2020-25657.patch | 176 ++++++++++++++++++
.../avoid-host-contamination.patch | 2 +-
.../python/python3-m2crypto_0.38.0.bb | 11 +-
3 files changed, 183 insertions(+), 6 deletions(-)
create mode 100644 meta-python/recipes-devtools/python/python3-m2crypto/CVE-2020-25657.patch

diff --git a/meta-python/recipes-devtools/python/python3-m2crypto/CVE-2020-25657.patch b/meta-python/recipes-devtools/python/python3-m2crypto/CVE-2020-25657.patch
new file mode 100644
index 000000000..38ecd7a27
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python3-m2crypto/CVE-2020-25657.patch
@@ -0,0 +1,176 @@
+Backport patch to fix CVE-2020-25657.
+
+Upstream-Status: Backport [https://gitlab.com/m2crypto/m2crypto/-/commit/84c53958]
+
+Signed-off-by: Kai Kang <kai.kang@...>
+
+From 84c53958def0f510e92119fca14d74f94215827a Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Mat=C4=9Bj=20Cepl?= <mcepl@...>
+Date: Tue, 28 Jun 2022 21:17:01 +0200
+Subject: [PATCH] Mitigate the Bleichenbacher timing attacks in the RSA
+ decryption API (CVE-2020-25657)
+
+Fixes #282
+---
+ src/SWIG/_m2crypto_wrap.c | 20 ++++++++++++--------
+ src/SWIG/_rsa.i | 20 ++++++++++++--------
+ tests/test_rsa.py | 15 +++++++--------
+ 3 files changed, 31 insertions(+), 24 deletions(-)
+
+diff --git a/src/SWIG/_m2crypto_wrap.c b/src/SWIG/_m2crypto_wrap.c
+index aba9eb6d..a9f30da9 100644
+--- a/src/SWIG/_m2crypto_wrap.c
++++ b/src/SWIG/_m2crypto_wrap.c
+@@ -7040,9 +7040,10 @@ PyObject *rsa_private_encrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_private_encrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -7070,9 +7071,10 @@ PyObject *rsa_public_decrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_public_decrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -7097,9 +7099,10 @@ PyObject *rsa_public_encrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_public_encrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -7124,9 +7127,10 @@ PyObject *rsa_private_decrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_private_decrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+
+diff --git a/src/SWIG/_rsa.i b/src/SWIG/_rsa.i
+index bc714e01..1377b8be 100644
+--- a/src/SWIG/_rsa.i
++++ b/src/SWIG/_rsa.i
+@@ -239,9 +239,10 @@ PyObject *rsa_private_encrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_private_encrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -269,9 +270,10 @@ PyObject *rsa_public_decrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_public_decrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -296,9 +298,10 @@ PyObject *rsa_public_encrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_public_encrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+@@ -323,9 +326,10 @@ PyObject *rsa_private_decrypt(RSA *rsa, PyObject *from, int padding) {
+ tlen = RSA_private_decrypt(flen, (unsigned char *)fbuf,
+ (unsigned char *)tbuf, rsa, padding);
+ if (tlen == -1) {
+- m2_PyErr_Msg(_rsa_err);
++ ERR_clear_error();
++ PyErr_Clear();
+ PyMem_Free(tbuf);
+- return NULL;
++ Py_RETURN_NONE;
+ }
+ ret = PyBytes_FromStringAndSize((const char *)tbuf, tlen);
+
+diff --git a/tests/test_rsa.py b/tests/test_rsa.py
+index 7bb3af75..5e75d681 100644
+--- a/tests/test_rsa.py
++++ b/tests/test_rsa.py
+@@ -109,8 +109,9 @@ class RSATestCase(unittest.TestCase):
+ # The other paddings.
+ for padding in self.s_padding_nok:
+ p = getattr(RSA, padding)
+- with self.assertRaises(RSA.RSAError):
+- priv.private_encrypt(self.data, p)
++ # Exception disabled as a part of mitigation against CVE-2020-25657
++ # with self.assertRaises(RSA.RSAError):
++ priv.private_encrypt(self.data, p)
+ # Type-check the data to be encrypted.
+ with self.assertRaises(TypeError):
+ priv.private_encrypt(self.gen_callback, RSA.pkcs1_padding)
+@@ -127,10 +128,12 @@ class RSATestCase(unittest.TestCase):
+ self.assertEqual(ptxt, self.data)
+
+ # no_padding
+- with six.assertRaisesRegex(self, RSA.RSAError, 'data too small'):
+- priv.public_encrypt(self.data, RSA.no_padding)
++ # Exception disabled as a part of mitigation against CVE-2020-25657
++ # with six.assertRaisesRegex(self, RSA.RSAError, 'data too small'):
++ priv.public_encrypt(self.data, RSA.no_padding)
+
+ # Type-check the data to be encrypted.
++ # Exception disabled as a part of mitigation against CVE-2020-25657
+ with self.assertRaises(TypeError):
+ priv.public_encrypt(self.gen_callback, RSA.pkcs1_padding)
+
+@@ -146,10 +149,6 @@ class RSATestCase(unittest.TestCase):
+ b'\000\000\000\003\001\000\001') # aka 65537 aka 0xf4
+ with self.assertRaises(RSA.RSAError):
+ setattr(rsa, 'e', '\000\000\000\003\001\000\001')
+- with self.assertRaises(RSA.RSAError):
+- rsa.private_encrypt(1)
+- with self.assertRaises(RSA.RSAError):
+- rsa.private_decrypt(1)
+ assert rsa.check_key()
+
+ def test_loadpub_bad(self):
+--
+GitLab
+
diff --git a/meta-python/recipes-devtools/python/python3-m2crypto/avoid-host-contamination.patch b/meta-python/recipes-devtools/python/python3-m2crypto/avoid-host-contamination.patch
index 9d9b8449b..3cd6f7c27 100644
--- a/meta-python/recipes-devtools/python/python3-m2crypto/avoid-host-contamination.patch
+++ b/meta-python/recipes-devtools/python/python3-m2crypto/avoid-host-contamination.patch
@@ -1,6 +1,6 @@
Filter out '/usr/include' for swig to avoid host contamination issue.

-Upstream-Status: Upstream-Status: Inappropriate [cross compile specific]
+Upstream-Status: Inappropriate [cross compile specific]

Signed-off-by: Kai Kang <kai.kang@...>
---
diff --git a/meta-python/recipes-devtools/python/python3-m2crypto_0.38.0.bb b/meta-python/recipes-devtools/python/python3-m2crypto_0.38.0.bb
index 51a0dd676..40e3bfb31 100644
--- a/meta-python/recipes-devtools/python/python3-m2crypto_0.38.0.bb
+++ b/meta-python/recipes-devtools/python/python3-m2crypto_0.38.0.bb
@@ -7,10 +7,11 @@ LIC_FILES_CHKSUM = "file://LICENCE;md5=b0e1f0b7d0ce8a62c18b1287b991800e"
FILESEXTRAPATHS:prepend := "${THISDIR}/python-m2crypto:"

SRC_URI += "file://0001-setup.py-link-in-sysroot-not-in-host-directories.patch \
- file://cross-compile-platform.patch \
- file://avoid-host-contamination.patch \
- file://0001-setup.py-address-openssl-3.x-build-issue.patch \
- "
+ file://cross-compile-platform.patch \
+ file://avoid-host-contamination.patch \
+ file://0001-setup.py-address-openssl-3.x-build-issue.patch \
+ file://CVE-2020-25657.patch \
+ "
SRC_URI[sha256sum] = "99f2260a30901c949a8dc6d5f82cd5312ffb8abc92e76633baf231bbbcb2decb"

PYPI_PACKAGE = "M2Crypto"
@@ -34,7 +35,7 @@ DISTUTILS_INSTALL_ARGS += "build_ext --openssl=${STAGING_EXECPREFIXDIR}"
SWIG_FEATURES:x86 = "-D__i386__"
SWIG_FEATURES:x32 = "-D__ILP32__"

-SWIG_FEATURES ?= "-D__${HOST_ARCH}__ ${@['-D__ILP32__','-D__LP64__'][d.getVar('SITEINFO_BITS') != '32']}"
+SWIG_FEATURES ?= "-D__${HOST_ARCH}__ ${@['-D__ILP32__','-D__LP64__'][d.getVar('SITEINFO_BITS') != '32']} -DOPENSSL_FILE='openssl/macros.h'"

SWIG_FEATURES:append:riscv64 = " -D__SIZEOF_POINTER__=${SITEINFO_BITS}/8 -D__riscv_xlen=${SITEINFO_BITS}"
SWIG_FEATURES:append:riscv32 = " -D__SIZEOF_POINTER__=${SITEINFO_BITS}/8 -D__riscv_xlen=${SITEINFO_BITS}"
--
2.17.1