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 de8dae22f0..54b8eba9cf 100644 --- a/ssl/s3_lib.c +++ b/ssl/s3_lib.c @@ -3534,13 +3534,16 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) #endif /* !OPENSSL_NO_EC */ case SSL_CTRL_SET_TLSEXT_HOSTNAME: if (larg == TLSEXT_NAMETYPE_host_name) { + size_t len; + OPENSSL_free(s->tlsext_hostname); s->tlsext_hostname = NULL; 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; } |