diff options
Diffstat (limited to 'ssl/s3_lib.c')
| -rw-r--r-- | ssl/s3_lib.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c index 64793d6af3..5970e617f0 100644 --- a/ssl/s3_lib.c +++ b/ssl/s3_lib.c @@ -3263,6 +3263,8 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) #ifndef OPENSSL_NO_TLSEXT case SSL_CTRL_SET_TLSEXT_HOSTNAME: if (larg == TLSEXT_NAMETYPE_host_name) { + size_t len; + if (s->tlsext_hostname != NULL) OPENSSL_free(s->tlsext_hostname); s->tlsext_hostname = NULL; @@ -3270,7 +3272,8 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) ret = 1; if (parg == NULL) break; - if (strlen((char *)parg) > TLSEXT_MAXLEN_host_name) { + len = strlen((char *)parg); + if (len == 0 || len > TLSEXT_MAXLEN_host_name) { SSLerr(SSL_F_SSL3_CTRL, SSL_R_SSL3_EXT_INVALID_SERVERNAME); return 0; } |