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secur32: NTLM - don't copy more data from User, Domain and Password 

pointers in the SEC_WINNT_AUTH_IDENTITY structure than the
corresponding Length fields say the pointers hold.
This commit is contained in:
Rob Shearman 2007-03-06 13:30:38 +00:00 committed by Alexandre Julliard
parent 7f16f21cf7
commit 3012038e73
1 changed files with 16 additions and 11 deletions
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27
dlls/secur32/ntlm.c
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@ -172,11 +172,15 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
/* Get username and domain from pAuthData */
username = HeapAlloc(GetProcessHeap(), 0,
(auth_data->UserLength + 1) * sizeof(SEC_WCHAR));
lstrcpyW(username, auth_data->User);
memcpy(username, auth_data->User,
auth_data->UserLength * sizeof(SEC_WCHAR));
username[auth_data->UserLength] = '\0';
domain = HeapAlloc(GetProcessHeap(), 0,
(auth_data->DomainLength + 1) * sizeof(SEC_WCHAR));
lstrcpyW(domain, auth_data->Domain);
memcpy(domain, auth_data->Domain,
auth_data->DomainLength * sizeof(SEC_WCHAR));
domain[auth_data->DomainLength] = '\0';
}
TRACE("Username is %s\n", debugstr_w(username));
unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
@ -222,15 +226,16 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
{
helper->pwlen = WideCharToMultiByte(CP_UNIXCP,
WC_NO_BEST_FIT_CHARS, auth_data->Password,
auth_data->PasswordLength+1, NULL, 0, NULL,
auth_data->PasswordLength, NULL, 0, NULL,
NULL) + 1;
helper->password = HeapAlloc(GetProcessHeap(), 0,
helper->pwlen);
WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
auth_data->Password, auth_data->PasswordLength+1,
auth_data->Password, auth_data->PasswordLength,
helper->password, helper->pwlen, NULL, NULL);
helper->password[helper->pwlen - 1] = '\0';
}
}
@ -304,11 +309,11 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
if(identity->UserLength != 0)
{
user_sizeW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)identity->User, identity->UserLength+1, NULL, 0);
(LPCSTR)identity->User, identity->UserLength, NULL, 0);
user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
identity->UserLength+1, user, user_sizeW);
identity->UserLength, user, user_sizeW);
}
else
{
@ -318,11 +323,11 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
if(identity->DomainLength != 0)
{
domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)identity->Domain, identity->DomainLength+1, NULL, 0);
(LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
* sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
identity->DomainLength+1, domain, domain_sizeW);
identity->DomainLength, domain, domain_sizeW);
}
else
{
@ -502,11 +507,11 @@ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
{
lstrcpynA(buffer, "PW ", max_len-1);
if((ret = encodeBase64((unsigned char*)helper->password,
helper->pwlen-2, buffer+3,
helper->pwlen-1, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
{
TRACE("Deleting password!\n");
memset(helper->password, 0, helper->pwlen-2);
memset(helper->password, 0, helper->pwlen-1);
HeapFree(GetProcessHeap(), 0, helper->password);
goto isc_end;
}
@ -734,7 +739,7 @@ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
{
TRACE("Deleting password!\n");
if(helper->password)
memset(helper->password, 0, helper->pwlen-2);
memset(helper->password, 0, helper->pwlen-1);
HeapFree(GetProcessHeap(), 0, helper->password);
}
isc_end: