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Windows vulnerability fix: CryptAcquireContext vulnerability fix. Add checks to random generator to abort in case of error and display a diagnose message to the user.

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This commit is contained in:
Mounir IDRASSI
2015-04-05 22:21:59 +02:00
parent a284922ce4
commit 2784652ab8
13 changed files with 171 additions and 24 deletions
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33
src/Common/Exception.h
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@@ -11,6 +11,7 @@
#include "Platform/PlatformBase.h"
#include "Dlgcode.h"
#include <strsafe.h>
namespace VeraCrypt
{
@@ -62,6 +63,38 @@ namespace VeraCrypt
const char *SrcPos;
};
struct RandInitFailed : public Exception
{
RandInitFailed (const char *srcPos, DWORD dwLastError) : SrcPos (srcPos), LastError (dwLastError) { }
void Show (HWND parent) const
{
char szErrCode[16];
StringCbPrintf (szErrCode, sizeof(szErrCode), "0x%.8X", LastError);
string msgBody = "The Random Generator initialization failed.\n\n\n(If you report a bug in connection with this, please include the following technical information in the bug report:\n" + string (SrcPos) + "\nLast Error = " + string (szErrCode) + ")";
MessageBox (parent, msgBody.c_str(), "VeraCrypt", MB_ICONERROR | MB_SETFOREGROUND);
}
const char *SrcPos;
DWORD LastError;
};
struct CryptoApiFailed : public Exception
{
CryptoApiFailed (const char *srcPos, DWORD dwLastError) : SrcPos (srcPos), LastError (dwLastError) { }
void Show (HWND parent) const
{
char szErrCode[16];
StringCbPrintf (szErrCode, sizeof(szErrCode), "0x%.8X", LastError);
string msgBody = "Windows Crypto API failed.\n\n\n(If you report a bug in connection with this, please include the following technical information in the bug report:\n" + string (SrcPos) + "\nLast Error = " + string (szErrCode) + ")";
MessageBox (parent, msgBody.c_str(), "VeraCrypt", MB_ICONERROR | MB_SETFOREGROUND);
}
const char *SrcPos;
DWORD LastError;
};
struct TimeOut : public Exception
{
TimeOut (const char *srcPos) { }