Commit e83aefb3 authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

reject zero length point format list or supported curves extensions

parent 1740c9fb

ssl/t1_lib.c

+4 −2
Original line number Diff line number Diff line
@@ -1853,7 +1853,8 @@ static int ssl_scan_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char 
			unsigned char *sdata = data;

			int ecpointformatlist_length = *(sdata++);



			if (ecpointformatlist_length != size - 1)

			if (ecpointformatlist_length != size - 1 || 

				ecpointformatlist_length < 1)

				{

				*al = TLS1_AD_DECODE_ERROR;

				return 0;
@@ -1889,7 +1890,8 @@ static int ssl_scan_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char 
			int ellipticcurvelist_length = (*(sdata++) << 8);

			ellipticcurvelist_length += (*(sdata++));



			if (ellipticcurvelist_length != size - 2)

			if (ellipticcurvelist_length != size - 2 ||

				ellipticcurvelist_length < 1)

				{

				*al = TLS1_AD_DECODE_ERROR;

				return 0;