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CBL-Mariner/SPECS/pytorch/CVE-2024-27318.patch

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From 4458baf0be43d07acc2adab99d48689f78ff1fe1 Mon Sep 17 00:00:00 2001
From: liqun Fu <liqfu@microsoft.com>
Date: Mon, 19 Feb 2024 11:12:40 -0800
Subject: [PATCH] Fix path sanitization bypass leading to arbitrary read
(#5917)
Signed-off-by: liqunfu <liqun.fu@microsoft.com>
Signed-off-by: liqun Fu <liqun.fu@microsoft.com>
Co-authored-by: Justin Chu <justinchuby@users.noreply.github.com>
(cherry picked from commit 66b7fb630903fdcf3e83b6b6d56d82e904264a20)
---
onnx/checker.cc | 168 +++++++++++++++++---------------
onnx/checker.h | 5 +-
onnx/common/path.h | 15 ++-
onnx/cpp2py_export.cc | 2 +
onnx/external_data_helper.py | 15 +--
onnx/test/test_external_data.py | 47 +++++++++
6 files changed, 158 insertions(+), 94 deletions(-)
diff --git a/third_party/onnx/onnx/checker.cc b/third_party/onnx/onnx/checker.cc
index fac56f5655f..66716e97f92 100644
--- a/third_party/onnx/onnx/checker.cc
+++ b/third_party/onnx/onnx/checker.cc
@@ -13,7 +13,6 @@
#include <vector>
#include "onnx/common/file_utils.h"
-#include "onnx/common/path.h"
#include "onnx/defs/schema.h"
#include "onnx/defs/tensor_proto_util.h"
#include "onnx/proto_utils.h"
@@ -135,85 +134,7 @@ void check_tensor(const TensorProto& tensor, const CheckerContext& ctx) {
for (const StringStringEntryProto& entry : tensor.external_data()) {
if (entry.has_key() && entry.has_value() && entry.key() == "location") {
has_location = true;
-#ifdef _WIN32
- auto file_path = std::filesystem::path(utf8str_to_wstring(entry.value()));
- if (file_path.is_absolute()) {
- fail_check(
- "Location of external TensorProto ( tensor name: ",
- tensor.name(),
- ") should be a relative path, but it is an absolute path: ",
- entry.value());
- }
- auto relative_path = file_path.lexically_normal().make_preferred().wstring();
- // Check that normalized relative path contains ".." on Windows.
- if (relative_path.find(L"..", 0) != std::string::npos) {
- fail_check(
- "Data of TensorProto ( tensor name: ",
- tensor.name(),
- ") should be file inside the ",
- ctx.get_model_dir(),
- ", but the '",
- entry.value(),
- "' points outside the directory");
- }
- std::wstring data_path = path_join(utf8str_to_wstring(ctx.get_model_dir()), relative_path);
- struct _stat64 buff;
- if (_wstat64(data_path.c_str(), &buff) != 0) {
- fail_check(
- "Data of TensorProto ( tensor name: ",
- tensor.name(),
- ") should be stored in ",
- entry.value(),
- ", but it doesn't exist or is not accessible.");
- }
-#else // POSIX
- if (entry.value().empty()) {
- fail_check("Location of external TensorProto ( tensor name: ", tensor.name(), ") should not be empty.");
- } else if (entry.value()[0] == '/') {
- fail_check(
- "Location of external TensorProto ( tensor name: ",
- tensor.name(),
- ") should be a relative path, but it is an absolute path: ",
- entry.value());
- }
- std::string relative_path = clean_relative_path(entry.value());
- // Check that normalized relative path contains ".." on POSIX
- if (relative_path.find("..", 0) != std::string::npos) {
- fail_check(
- "Data of TensorProto ( tensor name: ",
- tensor.name(),
- ") should be file inside the ",
- ctx.get_model_dir(),
- ", but the '",
- entry.value(),
- "' points outside the directory");
- }
- std::string data_path = path_join(ctx.get_model_dir(), relative_path);
- // use stat64 to check whether the file exists
-#if defined(__APPLE__) || defined(__wasm__) || !defined(__GLIBC__)
- struct stat buffer; // APPLE, wasm and non-glic stdlibs do not have stat64
- if (stat((data_path).c_str(), &buffer) != 0) {
-#else
- struct stat64 buffer; // All POSIX under glibc except APPLE and wasm have stat64
- if (stat64((data_path).c_str(), &buffer) != 0) {
-#endif
- fail_check(
- "Data of TensorProto ( tensor name: ",
- tensor.name(),
- ") should be stored in ",
- data_path,
- ", but it doesn't exist or is not accessible.");
- }
- // Do not allow symlinks or directories.
- if (!S_ISREG(buffer.st_mode)) {
- fail_check(
- "Data of TensorProto ( tensor name: ",
- tensor.name(),
- ") should be stored in ",
- data_path,
- ", but it is not regular file.");
- }
-#endif
+ resolve_external_data_location(ctx.get_model_dir(), entry.value(), tensor.name());
}
}
if (!has_location) {
@@ -1054,6 +975,93 @@ void check_model(const ModelProto& model, bool full_check, bool skip_opset_compa
}
}
+std::string resolve_external_data_location(
+ const std::string& base_dir,
+ const std::string& location,
+ const std::string& tensor_name) {
+#ifdef _WIN32
+ auto file_path = std::filesystem::path(utf8str_to_wstring(location));
+ if (file_path.is_absolute()) {
+ fail_check(
+ "Location of external TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be a relative path, but it is an absolute path: ",
+ location);
+ }
+ auto relative_path = file_path.lexically_normal().make_preferred().wstring();
+ // Check that normalized relative path contains ".." on Windows.
+ if (relative_path.find(L"..", 0) != std::string::npos) {
+ fail_check(
+ "Data of TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be file inside the ",
+ base_dir,
+ ", but the '",
+ location,
+ "' points outside the directory");
+ }
+ std::wstring data_path = path_join(utf8str_to_wstring(base_dir), relative_path);
+ struct _stat64 buff;
+ if (data_path.empty() || (data_path[0] != '#' && _wstat64(data_path.c_str(), &buff) != 0)) {
+ fail_check(
+ "Data of TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be stored in ",
+ location,
+ ", but it doesn't exist or is not accessible.");
+ }
+ return wstring_to_utf8str(data_path);
+#else // POSIX
+ if (location.empty()) {
+ fail_check("Location of external TensorProto ( tensor name: ", tensor_name, ") should not be empty.");
+ } else if (location[0] == '/') {
+ fail_check(
+ "Location of external TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be a relative path, but it is an absolute path: ",
+ location);
+ }
+ std::string relative_path = clean_relative_path(location);
+ // Check that normalized relative path contains ".." on POSIX
+ if (relative_path.find("..", 0) != std::string::npos) {
+ fail_check(
+ "Data of TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be file inside the ",
+ base_dir,
+ ", but the '",
+ location,
+ "' points outside the directory");
+ }
+ std::string data_path = path_join(base_dir, relative_path);
+ // use stat64 to check whether the file exists
+#if defined(__APPLE__) || defined(__wasm__) || !defined(__GLIBC__)
+ struct stat buffer; // APPLE, wasm and non-glic stdlibs do not have stat64
+ if (data_path.empty() || (data_path[0] != '#' && stat((data_path).c_str(), &buffer) != 0)) {
+#else
+ struct stat64 buffer; // All POSIX under glibc except APPLE and wasm have stat64
+ if (data_path.empty() || (data_path[0] != '#' && stat64((data_path).c_str(), &buffer) != 0)) {
+#endif
+ fail_check(
+ "Data of TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be stored in ",
+ data_path,
+ ", but it doesn't exist or is not accessible.");
+ }
+ // Do not allow symlinks or directories.
+ if (data_path.empty() || (data_path[0] != '#' && !S_ISREG(buffer.st_mode))) {
+ fail_check(
+ "Data of TensorProto ( tensor name: ",
+ tensor_name,
+ ") should be stored in ",
+ data_path,
+ ", but it is not regular file.");
+ }
+ return data_path;
+#endif
+}
+
std::set<std::string> experimental_ops = {
"ATen",
"Affine",
diff --git a/third_party/onnx/onnx/checker.h b/third_party/onnx/onnx/checker.h
index 6796acab222..83012213469 100644
--- a/third_party/onnx/onnx/checker.h
+++ b/third_party/onnx/onnx/checker.h
@@ -160,7 +160,10 @@ void check_model_local_functions(
void check_model(const ModelProto& model, bool full_check = false, bool skip_opset_compatibility_check = false);
void check_model(const std::string& model_path, bool full_check = false, bool skip_opset_compatibility_check = false);
-
+std::string resolve_external_data_location(
+ const std::string& base_dir,
+ const std::string& location,
+ const std::string& tensor_name);
bool check_is_experimental_op(const NodeProto& node);
} // namespace checker
diff --git a/third_party/onnx/onnx/common/path.h b/third_party/onnx/onnx/common/path.h
index 6eaf5e67baf..09212747f7f 100644
--- a/third_party/onnx/onnx/common/path.h
+++ b/third_party/onnx/onnx/common/path.h
@@ -31,11 +31,22 @@ inline std::wstring utf8str_to_wstring(const std::string& utf8str) {
if (utf8str.size() > INT_MAX) {
fail_check("utf8str_to_wstring: string is too long for converting to wstring.");
}
- int size_required = MultiByteToWideChar(CP_UTF8, 0, utf8str.c_str(), (int)utf8str.size(), NULL, 0);
+ int size_required = MultiByteToWideChar(CP_UTF8, 0, utf8str.c_str(), static_cast<int>(utf8str.size()), NULL, 0);
std::wstring ws_str(size_required, 0);
- MultiByteToWideChar(CP_UTF8, 0, utf8str.c_str(), (int)utf8str.size(), &ws_str[0], size_required);
+ MultiByteToWideChar(CP_UTF8, 0, utf8str.c_str(), static_cast<int>(utf8str.size()), &ws_str[0], size_required);
return ws_str;
}
+inline std::string wstring_to_utf8str(const std::wstring& ws_str) {
+ if (ws_str.size() > INT_MAX) {
+ fail_check("wstring_to_utf8str: string is too long for converting to UTF-8.");
+ }
+ int size_required =
+ WideCharToMultiByte(CP_UTF8, 0, ws_str.c_str(), static_cast<int>(ws_str.size()), NULL, 0, NULL, NULL);
+ std::string utf8str(size_required, 0);
+ WideCharToMultiByte(
+ CP_UTF8, 0, ws_str.c_str(), static_cast<int>(ws_str.size()), &utf8str[0], size_required, NULL, NULL);
+ return utf8str;
+}
#else
std::string path_join(const std::string& origin, const std::string& append);
diff --git a/third_party/onnx/onnx/cpp2py_export.cc b/third_party/onnx/onnx/cpp2py_export.cc
index bc2594db0db..83cea68f3eb 100644
--- a/third_party/onnx/onnx/cpp2py_export.cc
+++ b/third_party/onnx/onnx/cpp2py_export.cc
@@ -545,6 +545,8 @@ PYBIND11_MODULE(onnx_cpp2py_export, onnx_cpp2py_export) {
"full_check"_a = false,
"skip_opset_compatibility_check"_a = false);
+ checker.def("_resolve_external_data_location", &checker::resolve_external_data_location);
+
// Submodule `version_converter`
auto version_converter = onnx_cpp2py_export.def_submodule("version_converter");
version_converter.doc() = "VersionConverter submodule";
diff --git a/third_party/onnx/onnx/external_data_helper.py b/third_party/onnx/onnx/external_data_helper.py
index bbc2717fb4c..05c486c621a 100644
--- a/third_party/onnx/onnx/external_data_helper.py
+++ b/third_party/onnx/onnx/external_data_helper.py
@@ -8,6 +8,7 @@
from itertools import chain
from typing import Callable, Iterable, Optional
+import onnx.onnx_cpp2py_export.checker as c_checker
from onnx.onnx_pb import AttributeProto, GraphProto, ModelProto, TensorProto
@@ -39,9 +40,9 @@ def load_external_data_for_tensor(tensor: TensorProto, base_dir: str) -> None:
base_dir: directory that contains the external data.
"""
info = ExternalDataInfo(tensor)
- file_location = _sanitize_path(info.location)
- external_data_file_path = os.path.join(base_dir, file_location)
-
+ external_data_file_path = c_checker._resolve_external_data_location( # type: ignore[attr-defined]
+ base_dir, info.location, tensor.name
+ )
with open(external_data_file_path, "rb") as data_file:
if info.offset:
data_file.seek(info.offset)
@@ -259,14 +260,6 @@ def _get_attribute_tensors(onnx_model_proto: ModelProto) -> Iterable[TensorProto
yield from _get_attribute_tensors_from_graph(onnx_model_proto.graph)
-def _sanitize_path(path: str) -> str:
- """Remove path components which would allow traversing up a directory tree from a base path.
-
- Note: This method is currently very basic and should be expanded.
- """
- return path.lstrip("/.")
-
-
def _is_valid_filename(filename: str) -> bool:
"""Utility to check whether the provided filename is valid."""
exp = re.compile('^[^<>:;,?"*|/]+$')
diff --git a/third_party/onnx/onnx/test/test_external_data.py b/third_party/onnx/onnx/test/test_external_data.py
index 63f6b4efedd..bb14d279aff 100644
--- a/third_party/onnx/onnx/test/test_external_data.py
+++ b/third_party/onnx/onnx/test/test_external_data.py
@@ -3,6 +3,7 @@
# SPDX-License-Identifier: Apache-2.0
from __future__ import annotations
+import itertools
import os
import pathlib
import tempfile
@@ -204,6 +205,52 @@ def test_save_external_single_file_data(self) -> None:
attribute_tensor = new_model.graph.node[0].attribute[0].t
np.testing.assert_allclose(to_array(attribute_tensor), self.attribute_value)
+ @parameterized.parameterized.expand(itertools.product((True, False), (True, False)))
+ def test_save_external_invalid_single_file_data_and_check(
+ self, use_absolute_path: bool, use_model_path: bool
+ ) -> None:
+ model = onnx.load_model(self.model_filename, self.serialization_format)
+
+ model_dir = os.path.join(self.temp_dir, "save_copy")
+ os.mkdir(model_dir)
+
+ traversal_external_data_dir = os.path.join(
+ self.temp_dir, "invlid_external_data"
+ )
+ os.mkdir(traversal_external_data_dir)
+
+ if use_absolute_path:
+ traversal_external_data_location = os.path.join(
+ traversal_external_data_dir, "tensors.bin"
+ )
+ else:
+ traversal_external_data_location = "../invlid_external_data/tensors.bin"
+
+ external_data_dir = os.path.join(self.temp_dir, "external_data")
+ os.mkdir(external_data_dir)
+ new_model_filepath = os.path.join(model_dir, "model.onnx")
+
+ def convert_model_to_external_data_no_check(model: ModelProto, location: str):
+ for tensor in model.graph.initializer:
+ if tensor.HasField("raw_data"):
+ set_external_data(tensor, location)
+
+ convert_model_to_external_data_no_check(
+ model,
+ location=traversal_external_data_location,
+ )
+
+ onnx.save_model(model, new_model_filepath, self.serialization_format)
+ if use_model_path:
+ with self.assertRaises(onnx.checker.ValidationError):
+ _ = onnx.load_model(new_model_filepath, self.serialization_format)
+ else:
+ onnx_model = onnx.load_model(
+ new_model_filepath, self.serialization_format, load_external_data=False
+ )
+ with self.assertRaises(onnx.checker.ValidationError):
+ load_external_data_for_model(onnx_model, external_data_dir)
+
@parameterized.parameterized_class(
[
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