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Merge branch 'iotssl-518-winpathlen-restricted' into development-restricted

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* iotssl-518-winpathlen-restricted:
  Fix potential heap corruption on Windows
This commit is contained in:
Manuel Pégourié-Gonnard 2015-11-02 11:04:59 +09:00
commit 537e2a9b58
2 changed files with 5 additions and 2 deletions
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3
ChangeLog
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@ -6,6 +6,9 @@ Security
* Fix potential double free if mbedtls_ssl_conf_psk() is called more than
once and some allocation fails. Cannot be forced remotely. Found by Guido
Vranken, Intelworks.
* Fix potential heap corruption on Windows when
mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
triggered remotely. Found by Guido Vranken, Interlworks.
* The X509 max_pathlen constraint was not enforced on intermediate
certificates. Found by Nicholas Wilson, fix and tests provided by
Janos Follath. #280 and #319

4
library/x509_crt.c
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@ -1099,7 +1099,7 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
WCHAR szDir[MAX_PATH];
char filename[MAX_PATH];
char *p;
int len = (int) strlen( path );
size_t len = strlen( path );
WIN32_FIND_DATAW file_data;
HANDLE hFind;
@ -1133,7 +1133,7 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
lstrlenW( file_data.cFileName ),
p, len - 1,
p, (int) len - 1,
NULL, NULL );
if( w_ret == 0 )
return( MBEDTLS_ERR_X509_FILE_IO_ERROR );