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Abort properly on decode error

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This commit is contained in:
William Robinet 2021-01-27 18:38:13 +01:00
parent cc1e752167
commit 2d3d5d8045
2 changed files with 12 additions and 6 deletions
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12
ssl/sslprint.c
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@ -124,7 +124,7 @@ int process_v2_hello(ssl,seg)
ABORT(SSL_BAD_CONTENT_TYPE); ABORT(SSL_BAD_CONTENT_TYPE);
d.len--; d.len--;
SSL_DECODE_UINT16(ssl,"Version number",P_DC,&d,&ver); SSL_DECODE_UINT16_ABORT(ssl,"Version number",P_DC,&d,&ver);
/* We can't handle real v2 clients*/ /* We can't handle real v2 clients*/
if(ver<=2){ if(ver<=2){
explain(ssl,"Version 2 Client.\n"); explain(ssl,"Version 2 Client.\n");
@ -146,9 +146,9 @@ int process_v2_hello(ssl,seg)
ver&0xff); ver&0xff);
LF; LF;
} }
SSL_DECODE_UINT16(ssl,"cipher_spec_length",P_DC,&d,&cs_len); SSL_DECODE_UINT16_ABORT(ssl,"cipher_spec_length",P_DC,&d,&cs_len);
SSL_DECODE_UINT16(ssl,"session_id_length",P_DC,&d,&sid_len); SSL_DECODE_UINT16_ABORT(ssl,"session_id_length",P_DC,&d,&sid_len);
SSL_DECODE_UINT16(ssl,"challenge_length",P_DC,&d,&chall_len); SSL_DECODE_UINT16_ABORT(ssl,"challenge_length",P_DC,&d,&chall_len);
if(cs_len%3){ if(cs_len%3){
fprintf(stderr,"Bad cipher spec length %d\n",cs_len); fprintf(stderr,"Bad cipher spec length %d\n",cs_len);
@ -161,7 +161,7 @@ int process_v2_hello(ssl,seg)
for(;cs_len;cs_len-=3){ for(;cs_len;cs_len-=3){
UINT4 val; UINT4 val;
SSL_DECODE_UINT24(ssl,0,0,&d,&val); SSL_DECODE_UINT24_ABORT(ssl,0,0,&d,&val);
ssl_print_cipher_suite(ssl,ver,P_HL,val); ssl_print_cipher_suite(ssl,ver,P_HL,val);
P_(P_HL){ P_(P_HL){
explain(ssl,"\n"); explain(ssl,"\n");
@ -178,7 +178,7 @@ int process_v2_hello(ssl,seg)
ABORT(SSL_BAD_DATA); ABORT(SSL_BAD_DATA);
} }
SSL_DECODE_OPAQUE_ARRAY(ssl,0,chall_len, SSL_DECODE_OPAQUE_ARRAY_ABORT(ssl,0,chall_len,
0,&d,&chall); 0,&d,&chall);
P_(P_DC){ P_(P_DC){
exdump(ssl,"Challenge",&chall); exdump(ssl,"Challenge",&chall);

6
ssl/sslprint.h
View file

@ -88,6 +88,12 @@ int exstr PROTO_LIST((ssl_obj *ssl,char *name,Data *data));
#define SSL_DECODE_UINT32(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,4,b,c,d))) ERETURN(r) #define SSL_DECODE_UINT32(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,4,b,c,d))) ERETURN(r)
#define SSL_DECODE_OPAQUE_ARRAY(a,n,b,c,d,e) if((r=ssl_decode_opaque_array(a,n,b,c,d,e))) ERETURN(r) #define SSL_DECODE_OPAQUE_ARRAY(a,n,b,c,d,e) if((r=ssl_decode_opaque_array(a,n,b,c,d,e))) ERETURN(r)
#define SSL_DECODE_ENUM(a,b,c,d,e,f,g) if((r=ssl_decode_enum(a,b,c,d,e,f,g))) ERETURN(r) #define SSL_DECODE_ENUM(a,b,c,d,e,f,g) if((r=ssl_decode_enum(a,b,c,d,e,f,g))) ERETURN(r)
#define SSL_DECODE_UINT8_ABORT(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,1,b,c,d))) ABORT(r)
#define SSL_DECODE_UINT16_ABORT(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,2,b,c,d))) ABORT(r)
#define SSL_DECODE_UINT24_ABORT(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,3,b,c,d))) ABORT(r)
#define SSL_DECODE_UINT32_ABORT(a,n,b,c,d) if((r=ssl_decode_uintX(a,n,4,b,c,d))) ABORT(r)
#define SSL_DECODE_OPAQUE_ARRAY_ABORT(a,n,b,c,d,e) if((r=ssl_decode_opaque_array(a,n,b,c,d,e))) ABORT(r)
#define SSL_DECODE_ENUM_ABORT(a,b,c,d,e,f,g) if((r=ssl_decode_enum(a,b,c,d,e,f,g))) ABORT(r)
#define P_(p) if((p==SSL_PRINT_ALL) || (p & SSL_print_flags)) #define P_(p) if((p==SSL_PRINT_ALL) || (p & SSL_print_flags))
#define INDENT if(!(NET_print_flags & NET_PRINT_JSON)) do {int i; for(i=0;i<(ssl->indent_depth + ssl->indent_name_len);i++) printf("%s",SSL_print_flags & SSL_PRINT_NROFF?" ":" ");} while(0) #define INDENT if(!(NET_print_flags & NET_PRINT_JSON)) do {int i; for(i=0;i<(ssl->indent_depth + ssl->indent_name_len);i++) printf("%s",SSL_print_flags & SSL_PRINT_NROFF?" ":" ");} while(0)