[Openvpn-devel] msvc: adjust build options to harden binaries

Message ID 20220107145522.435-1-lstipakov@gmail.com
State New
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Series
  • [Openvpn-devel] msvc: adjust build options to harden binaries
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Commit Message

Lev Stipakov Jan. 7, 2022, 2:55 p.m.
From: Lev Stipakov <lev@openvpn.net>

 - enable hardware-enforced stack protection on
compatible hardware/software (/CETCOMPAT linker option)

 - hash object files with SHA256 (/ZH:SHA_256 compiler option)

 - enable SDL. The required to add

    _CRT_NONSTDC_NO_DEPRECATE
    _CRT_SECURE_NO_WARNINGS
    _WINSOCK_DEPRECATED_NO_WARNINGS

preprocessor definitions. I don't feel like replacing strdup (which is
correct POSIX function) and inet_ntoa (we always pass IPv4 address to
it, inet_ntop will make code more complex)

Above issues were discovered by bitskim.

Signed-off-by: Lev Stipakov <lev@openvpn.net>
---
 src/openvpn/openvpn.vcxproj           | 35 ++++++++++++-------
 src/openvpnmsica/openvpnmsica.vcxproj | 37 +++++++++++++++++++++
 src/openvpnserv/openvpnserv.vcxproj   | 14 ++++++++
 src/tapctl/tapctl.vcxproj             | 48 +++++++++++++++++++++++----
 4 files changed, 116 insertions(+), 18 deletions(-)

Patch

diff --git a/src/openvpn/openvpn.vcxproj b/src/openvpn/openvpn.vcxproj
index 65ee6839..55ad7197 100644
--- a/src/openvpn/openvpn.vcxproj
+++ b/src/openvpn/openvpn.vcxproj
@@ -147,11 +147,12 @@ 
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -162,11 +163,12 @@ 
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir)include;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -177,11 +179,12 @@ 
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -192,44 +195,52 @@ 
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Ncrypt.lib;gdi32.lib;ws2_32.lib;wininet.lib;crypt32.lib;iphlpapi.lib;winmm.lib;Fwpuclnt.lib;Rpcrt4.lib;setupapi.lib;Advapi32.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(OPENSSL_HOME)/lib;$(LZO_HOME)/lib;$(PKCS11H_HOME)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <SDLCheck>true</SDLCheck>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Ncrypt.lib;gdi32.lib;ws2_32.lib;wininet.lib;crypt32.lib;iphlpapi.lib;winmm.lib;Fwpuclnt.lib;Rpcrt4.lib;setupapi.lib;Advapi32.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(OPENSSL_HOME)/lib;$(LZO_HOME)/lib;$(PKCS11H_HOME)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
     <ClCompile>
-      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <UndefinePreprocessorDefinitions>%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
-      <WarningLevel>Level2</WarningLevel>
       <TreatWarningAsError>true</TreatWarningAsError>
       <AdditionalIncludeDirectories>..\compat;$(SolutionDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <ControlFlowGuard>Guard</ControlFlowGuard>
+      <WarningLevel>Level2</WarningLevel>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
     </ClCompile>
     <ResourceCompile />
     <Link>
diff --git a/src/openvpnmsica/openvpnmsica.vcxproj b/src/openvpnmsica/openvpnmsica.vcxproj
index 11aa78bb..1af8899e 100644
--- a/src/openvpnmsica/openvpnmsica.vcxproj
+++ b/src/openvpnmsica/openvpnmsica.vcxproj
@@ -135,6 +135,43 @@ 
   <PropertyGroup Label="Vcpkg" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <VcpkgEnabled>true</VcpkgEnabled>
   </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\tapctl\error.c" />
     <ClCompile Include="..\tapctl\tap.c" />
diff --git a/src/openvpnserv/openvpnserv.vcxproj b/src/openvpnserv/openvpnserv.vcxproj
index 5fd7d60b..d42e9642 100644
--- a/src/openvpnserv/openvpnserv.vcxproj
+++ b/src/openvpnserv/openvpnserv.vcxproj
@@ -125,6 +125,8 @@ 
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -136,6 +138,8 @@ 
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -147,6 +151,8 @@ 
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
@@ -158,28 +164,36 @@ 
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>Userenv.lib;Iphlpapi.lib;ntdll.lib;Fwpuclnt.lib;Netapi32.lib;Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
       <AdditionalDependencies>legacy_stdio_definitions.lib;Userenv.lib;Iphlpapi.lib;ntdll.lib;Fwpuclnt.lib;Netapi32.lib;Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
+      <CETCompat>true</CETCompat>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile />
     <Link>
diff --git a/src/tapctl/tapctl.vcxproj b/src/tapctl/tapctl.vcxproj
index 79da9d33..0fc22d97 100644
--- a/src/tapctl/tapctl.vcxproj
+++ b/src/tapctl/tapctl.vcxproj
@@ -135,12 +135,48 @@ 
   <PropertyGroup Label="Vcpkg" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <VcpkgEnabled>true</VcpkgEnabled>
   </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Link>
+      <CETCompat>true</CETCompat>
+    </Link>
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalOptions>/ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="error.c" />
     <ClCompile Include="tap.c" />