[tfaber] 74373: [WS2_32][DNSAPI] - Avoid stack buffer overflow in ParseV4Address CORE-11474

Author: tfaber
Date: Wed Apr 19 11:14:18 2017
New Revision: 74373

URL: http://svn.reactos.org/svn/reactos?rev=74373&view=rev
Log:
[WS2_32][DNSAPI]
- Avoid stack buffer overflow in ParseV4Address
CORE-11474

Modified:
    trunk/reactos/dll/win32/dnsapi/dnsapi/query.c
    trunk/reactos/dll/win32/ws2_32/src/addrinfo.c

Modified: trunk/reactos/dll/win32/dnsapi/dnsapi/query.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/dnsapi/dnsapi/qu…
==============================================================================
--- trunk/reactos/dll/win32/dnsapi/dnsapi/query.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/dnsapi/dnsapi/query.c	[iso-8859-1] Wed Apr 19 11:14:18 2017
@@ -460,6 +460,7 @@
     */
     if (*cp && *cp > ' ') return FALSE;
 
+    if (pp >= parts + 4) return FALSE;
     *pp++ = val;
     /*
     * Concoct the address according to

Modified: trunk/reactos/dll/win32/ws2_32/src/addrinfo.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ws2_32/src/addri…
==============================================================================
--- trunk/reactos/dll/win32/ws2_32/src/addrinfo.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/ws2_32/src/addrinfo.c	[iso-8859-1] Wed Apr 19 11:14:18 2017
@@ -148,6 +148,7 @@
     */
     if (*cp) return FALSE;
 
+    if (pp >= parts + 4) return FALSE;
     *pp++ = val;
     /*
     * Concoct the address according to