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Uninitialized variable l results in cert length mismatch error

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An local var `l` in gmtls_construct_client_certificate is uninitialized,
which leads to an cert length mismatch error.

GMTLS handshake using SM2-WITH-SMS4-SM3 cipher suite will be failed due
to this issue.

My editor automatically removed some trailing spaces when I fixed this
bug. So some lines modified in `statem_gmtls.c` are insignificant.
Please ignore them.
This commit is contained in:
Feng Jie
2019-09-19 18:30:47 +08:00
parent a097e49719
commit 237f895ef1
1 changed files with 7 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
ssl/statem/statem_gmtls.c
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@@ -281,7 +281,7 @@ static int gmtls_process_sm9_params(SSL *s, PACKET *pkt, int *al, int ibe)
if (!(sm9->params = d2i_SM9PublicParameters(NULL, &p,
PACKET_remaining(&params)))) {
*al = SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_GMTLS_PROCESS_SM9_PARAMS, ERR_R_INTERNAL_ERROR);// rename this error
SSLerr(SSL_F_GMTLS_PROCESS_SM9_PARAMS, ERR_R_INTERNAL_ERROR);// rename this error
return 0;
}
/* check there is no remaining data */
@@ -525,8 +525,8 @@ static int gmtls_construct_ske_sm2dhe(SSL *s, unsigned char **p, int *l, int *al
s2n(siglen, d);
d += siglen;
*l += d - *p;
*p = d;
*l += d - *p;
*p = d;
*al = -1;
ret = 1;
@@ -599,7 +599,7 @@ static int gmtls_process_ske_sm2dhe(SSL *s, PACKET *pkt, int *al)
}
// s->s3->peer_tmp need to be free-ed when error happed?
/* get ECDHEParams length */
paramslen = PACKET_data(pkt) - ecparams;
@@ -1339,7 +1339,7 @@ int gmtls_construct_client_certificate(SSL *s)
int al = -1;
unsigned long alg_a = s->s3->tmp.new_cipher->algorithm_auth;
unsigned char *p;
int l;
int l = 3 + SSL_HM_HEADER_LENGTH(s);
if (alg_a & SSL_aSM2) {
if (!gmtls_construct_sm2_certs(s, &l)) {
@@ -2185,8 +2185,8 @@ int gmtls_construct_client_key_exchange(SSL *s)
err:
if (al != -1)
ssl3_send_alert(s, SSL3_AL_FATAL, al);
OPENSSL_clear_free(s->s3->tmp.pms, s->s3->tmp.pmslen);
s->s3->tmp.pms = NULL;
OPENSSL_clear_free(s->s3->tmp.pms, s->s3->tmp.pmslen);
s->s3->tmp.pms = NULL;
ossl_statem_set_error(s);
return 0;
}