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gnutls
gnutls-increase-TLS-PSK-username-limit.patch
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File gnutls-increase-TLS-PSK-username-limit.patch of Package gnutls
From f032324af70b8420f7b550f3277efd4a9cd2b2dd Mon Sep 17 00:00:00 2001 From: Zoltan Fridrich <zfridric@redhat.com> Date: Tue, 10 May 2022 15:20:45 +0200 Subject: [PATCH] Increase the limit of TLS PSK usernames from 128 to 65535 characters Co-authored-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Zoltan Fridrich <zfridric@redhat.com> --- NEWS | 3 ++ lib/auth.c | 19 +++++++++++ lib/auth/dhe_psk.c | 51 ++++++++++++++--------------- lib/auth/psk.c | 64 ++++++++++++++----------------------- lib/auth/psk.h | 35 ++++++++++++++------ lib/auth/rsa_psk.c | 4 ++- lib/auth/srp_kx.c | 15 +++++---- lib/auth/srp_kx.h | 3 +- lib/ext/pre_shared_key.c | 16 ++++++++-- lib/ext/srp.c | 5 --- lib/gnutls_int.h | 10 ++++-- lib/handshake-checks.c | 22 +++++++++---- lib/psk.c | 8 +---- lib/session_pack.c | 69 ++++++++++++++++++++++------------------ lib/state.c | 2 ++ 15 files changed, 187 insertions(+), 139 deletions(-) Index: gnutls-3.7.3/lib/auth.c =================================================================== --- gnutls-3.7.3.orig/lib/auth.c +++ gnutls-3.7.3/lib/auth.c @@ -28,6 +28,7 @@ #include "algorithms.h" #include <auth/cert.h> #include <auth/psk.h> +#include <auth/srp_kx.h> #include <auth/anon.h> #include <datum.h> @@ -327,6 +328,16 @@ void _gnutls_free_auth_info(gnutls_sessi switch (session->key.auth_info_type) { case GNUTLS_CRD_SRP: + { + srp_server_auth_info_t info = + _gnutls_get_auth_info(session, GNUTLS_CRD_SRP); + + if (info == NULL) + break; + + gnutls_free(info->username); + info->username = NULL; + } break; #ifdef ENABLE_ANON case GNUTLS_CRD_ANON: @@ -350,6 +361,14 @@ void _gnutls_free_auth_info(gnutls_sessi if (info == NULL) break; + gnutls_free(info->username); + info->username = NULL; + info->username_len = 0; + + gnutls_free(info->hint); + info->hint = NULL; + info->hint_len = 0; + #ifdef ENABLE_DHE dh_info = &info->dh; _gnutls_free_dh_info(dh_info); Index: gnutls-3.7.3/lib/auth/dhe_psk.c =================================================================== --- gnutls-3.7.3.orig/lib/auth/dhe_psk.c +++ gnutls-3.7.3/lib/auth/dhe_psk.c @@ -316,7 +316,9 @@ proc_dhe_psk_client_kx(gnutls_session_t return GNUTLS_E_ILLEGAL_SRP_USERNAME; } - _gnutls_copy_psk_username(info, &username); + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) + return gnutls_assert_val(ret); /* Adjust the data */ data += username.size + 2; @@ -382,7 +384,9 @@ proc_ecdhe_psk_client_kx(gnutls_session_ return GNUTLS_E_ILLEGAL_SRP_USERNAME; } - _gnutls_copy_psk_username(info, &username); + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) + return gnutls_assert_val(ret); /* Adjust the data */ data += username.size + 2; @@ -403,29 +407,6 @@ proc_ecdhe_psk_client_kx(gnutls_session_ return ret; } -static int copy_hint(gnutls_session_t session, gnutls_datum_t *hint) -{ - psk_auth_info_t info; - - /* copy the hint to the auth info structures - */ - info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); - if (info == NULL) { - gnutls_assert(); - return GNUTLS_E_INTERNAL_ERROR; - } - - if (hint->size > MAX_USERNAME_SIZE) { - gnutls_assert(); - return GNUTLS_E_ILLEGAL_SRP_USERNAME; - } - - memcpy(info->hint, hint->data, hint->size); - info->hint[hint->size] = 0; - - return 0; -} - static int proc_dhe_psk_server_kx(gnutls_session_t session, uint8_t * data, size_t _data_size) @@ -433,6 +414,7 @@ proc_dhe_psk_server_kx(gnutls_session_t int ret; ssize_t data_size = _data_size; + psk_auth_info_t info; gnutls_datum_t hint; /* set auth_info */ @@ -457,7 +439,14 @@ proc_dhe_psk_server_kx(gnutls_session_t return ret; } - ret = copy_hint(session, &hint); + info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); + if (info == NULL) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + + if (hint.size > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_ILLEGAL_SRP_USERNAME); + + ret = _gnutls_copy_psk_hint(info, hint); if (ret < 0) { gnutls_assert(); return ret; @@ -473,6 +462,7 @@ proc_ecdhe_psk_server_kx(gnutls_session_ int ret; ssize_t data_size = _data_size; + psk_auth_info_t info; gnutls_datum_t hint; /* set auth_info */ @@ -497,7 +487,14 @@ proc_ecdhe_psk_server_kx(gnutls_session_ return ret; } - ret = copy_hint(session, &hint); + info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); + if (info == NULL) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + + if (hint.size > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_ILLEGAL_SRP_USERNAME); + + ret = _gnutls_copy_psk_hint(info, hint); if (ret < 0) { gnutls_assert(); return ret; Index: gnutls-3.7.3/lib/auth/psk.c =================================================================== --- gnutls-3.7.3.orig/lib/auth/psk.c +++ gnutls-3.7.3/lib/auth/psk.c @@ -162,15 +162,18 @@ _gnutls_gen_psk_client_kx(gnutls_session gnutls_assert(); } - if (username.size > sizeof(info->username)-1) { + if (username.size > MAX_USERNAME_SIZE) { gnutls_assert(); ret = GNUTLS_E_ILLEGAL_SRP_USERNAME; goto cleanup; } assert(username.data != NULL); - _gnutls_copy_psk_username(info, &username); - + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) { + gnutls_assert(); + goto cleanup; + } cleanup: if (free) { @@ -230,7 +233,9 @@ _gnutls_proc_psk_client_kx(gnutls_sessio return GNUTLS_E_ILLEGAL_SRP_USERNAME; } - _gnutls_copy_psk_username(info, &username); + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) + return gnutls_assert_val(ret); ret = _gnutls_psk_pwd_find_entry(session, info->username, info->username_len, &psk_key); @@ -291,59 +296,38 @@ _gnutls_gen_psk_server_kx(gnutls_session hint.size); } - -/* just read the hint from the server key exchange. - */ +/* Read the hint from the server key exchange */ static int -_gnutls_proc_psk_server_kx(gnutls_session_t session, uint8_t * data, - size_t _data_size) +_gnutls_proc_psk_server_kx(gnutls_session_t session, uint8_t * data, size_t _data_size) { - ssize_t data_size = _data_size; int ret; - gnutls_datum_t hint; + ssize_t data_size = _data_size; gnutls_psk_client_credentials_t cred; psk_auth_info_t info; + gnutls_datum_t hint; - cred = (gnutls_psk_client_credentials_t) - _gnutls_get_cred(session, GNUTLS_CRD_PSK); - - if (cred == NULL) { - gnutls_assert(); - return GNUTLS_E_INSUFFICIENT_CREDENTIALS; - } + cred = (gnutls_psk_client_credentials_t) _gnutls_get_cred(session, GNUTLS_CRD_PSK); + if (cred == NULL) + return gnutls_assert_val(GNUTLS_E_INSUFFICIENT_CREDENTIALS); - if ((ret = - _gnutls_auth_info_init(session, GNUTLS_CRD_PSK, - sizeof(psk_auth_info_st), 1)) < 0) { - gnutls_assert(); - return ret; - } + ret = _gnutls_auth_info_init(session, GNUTLS_CRD_PSK, sizeof(psk_auth_info_st), 1); + if (ret < 0) + return gnutls_assert_val(ret); DECR_LENGTH_RET(data_size, 2, 0); hint.size = _gnutls_read_uint16(&data[0]); DECR_LEN(data_size, hint.size); - hint.data = &data[2]; - /* copy the hint to the auth info structures - */ info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); - if (info == NULL) { - gnutls_assert(); - return GNUTLS_E_INTERNAL_ERROR; - } - - if (hint.size > sizeof(info->hint)-1) { - gnutls_assert(); - return GNUTLS_E_ILLEGAL_SRP_USERNAME; - } + if (info == NULL) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); - memcpy(info->hint, hint.data, hint.size); - info->hint[hint.size] = 0; - - ret = 0; + if (hint.size > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_ILLEGAL_SRP_USERNAME); + ret = _gnutls_copy_psk_hint(info, hint); return ret; } Index: gnutls-3.7.3/lib/auth/psk.h =================================================================== --- gnutls-3.7.3.orig/lib/auth/psk.h +++ gnutls-3.7.3/lib/auth/psk.h @@ -26,6 +26,12 @@ #include <auth.h> #include <auth/dh_common.h> +#define _gnutls_copy_psk_username(info, datum) \ + _gnutls_copy_psk_string(&(info)->username, &(info)->username_len, (datum)) + +#define _gnutls_copy_psk_hint(info, datum) \ + _gnutls_copy_psk_string(&(info)->hint, &(info)->hint_len, (datum)) + typedef struct gnutls_psk_client_credentials_st { gnutls_datum_t username; gnutls_datum_t key; @@ -58,23 +64,34 @@ typedef struct gnutls_psk_server_credent const mac_entry_st *binder_algo; } psk_server_cred_st; -/* these structures should not use allocated data */ typedef struct psk_auth_info_st { - char username[MAX_USERNAME_SIZE + 1]; + char *username; uint16_t username_len; dh_info_st dh; - char hint[MAX_USERNAME_SIZE + 1]; + char *hint; + uint16_t hint_len; } *psk_auth_info_t; typedef struct psk_auth_info_st psk_auth_info_st; -inline static -void _gnutls_copy_psk_username(psk_auth_info_t info, const gnutls_datum_t *username) +inline static int +_gnutls_copy_psk_string(char **dest, uint16_t *dest_len, const gnutls_datum_t str) { - assert(sizeof(info->username) > username->size); - memcpy(info->username, username->data, username->size); - info->username[username->size] = 0; - info->username_len = username->size; + char *_tmp; + + assert(MAX_USERNAME_SIZE >= str.size); + + _tmp = gnutls_malloc(str.size + 1); + if (_tmp == NULL) + return GNUTLS_E_MEMORY_ERROR; + memcpy(_tmp, str.data, str.size); + _tmp[str.size] = '\0'; + + gnutls_free(*dest); + *dest = _tmp; + *dest_len = str.size; + + return GNUTLS_E_SUCCESS; } #ifdef ENABLE_PSK Index: gnutls-3.7.3/lib/auth/rsa_psk.c =================================================================== --- gnutls-3.7.3.orig/lib/auth/rsa_psk.c +++ gnutls-3.7.3/lib/auth/rsa_psk.c @@ -310,7 +310,9 @@ _gnutls_proc_rsa_psk_client_kx(gnutls_se return GNUTLS_E_ILLEGAL_SRP_USERNAME; } - _gnutls_copy_psk_username(info, &username); + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) + gnutls_assert_val(ret); /* Adjust data so it points to EncryptedPreMasterSecret */ data += username.size + 2; Index: gnutls-3.7.3/lib/auth/srp_kx.c =================================================================== --- gnutls-3.7.3.orig/lib/auth/srp_kx.c +++ gnutls-3.7.3/lib/auth/srp_kx.c @@ -119,10 +119,9 @@ _gnutls_gen_srp_server_kx(gnutls_session gnutls_buffer_st * data) { int ret; - char *username; SRP_PWD_ENTRY *pwd_entry; srp_server_auth_info_t info; - size_t tmp_size; + size_t tmp_size, username_length; gnutls_ext_priv_data_t epriv; srp_ext_st *priv; unsigned init_pos; @@ -148,12 +147,16 @@ _gnutls_gen_srp_server_kx(gnutls_session if (info == NULL) return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); - username = info->username; - - _gnutls_str_cpy(username, MAX_USERNAME_SIZE, priv->username); - - ret = _gnutls_srp_pwd_read_entry(session, username, &pwd_entry); + username_length = strlen(priv->username); + if (username_length > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_ILLEGAL_SRP_USERNAME); + + gnutls_free(info->username); + info->username = gnutls_strdup(priv->username); + if (info->username == NULL) + return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); + ret = _gnutls_srp_pwd_read_entry(session, priv->username, &pwd_entry); if (ret < 0) { gnutls_assert(); return ret; Index: gnutls-3.7.3/lib/auth/srp_kx.h =================================================================== --- gnutls-3.7.3.orig/lib/auth/srp_kx.h +++ gnutls-3.7.3/lib/auth/srp_kx.h @@ -46,9 +46,8 @@ typedef struct gnutls_srp_server_credent unsigned int fake_salt_length; } srp_server_cred_st; -/* these structures should not use allocated data */ typedef struct srp_server_auth_info_st { - char username[MAX_USERNAME_SIZE + 1]; + char *username; } *srp_server_auth_info_t; #ifdef ENABLE_SRP Index: gnutls-3.7.3/lib/ext/pre_shared_key.c =================================================================== --- gnutls-3.7.3.orig/lib/ext/pre_shared_key.c +++ gnutls-3.7.3/lib/ext/pre_shared_key.c @@ -392,7 +392,12 @@ client_send_params(gnutls_session_t sess info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); assert(info != NULL); - _gnutls_copy_psk_username(info, &username); + ret = _gnutls_copy_psk_username(info, username); + if (ret < 0) { + gnutls_assert(); + goto cleanup; + } + if ((ret = _gnutls_buffer_append_data_prefix(extdata, 16, username.data, @@ -674,7 +679,7 @@ static int server_recv_params(gnutls_ses /* save the username in psk_auth_info to make it available * using gnutls_psk_server_get_username() */ if (!resuming) { - assert(psk.identity.size < sizeof(info->username)); + assert(psk.identity.size <= MAX_USERNAME_SIZE); ret = _gnutls_auth_info_init(session, GNUTLS_CRD_PSK, sizeof(psk_auth_info_st), 1); if (ret < 0) { @@ -685,7 +690,12 @@ static int server_recv_params(gnutls_ses info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); assert(info != NULL); - _gnutls_copy_psk_username(info, &psk.identity); + ret = _gnutls_copy_psk_username(info, psk.identity); + if (ret < 0) { + gnutls_assert(); + goto fail; + } + _gnutls_handshake_log("EXT[%p]: selected PSK identity: %s (%d)\n", session, info->username, psk_index); /* We currently only support early data in resuming connection, Index: gnutls-3.7.3/lib/ext/srp.c =================================================================== --- gnutls-3.7.3.orig/lib/ext/srp.c +++ gnutls-3.7.3/lib/ext/srp.c @@ -73,11 +73,6 @@ _gnutls_srp_recv_params(gnutls_session_t len = data[0]; DECR_LEN(data_size, len); - if (MAX_USERNAME_SIZE < len) { - gnutls_assert(); - return GNUTLS_E_ILLEGAL_SRP_USERNAME; - } - priv = gnutls_calloc(1, sizeof(*priv)); if (priv == NULL) { gnutls_assert(); Index: gnutls-3.7.3/lib/gnutls_int.h =================================================================== --- gnutls-3.7.3.orig/lib/gnutls_int.h +++ gnutls-3.7.3/lib/gnutls_int.h @@ -108,7 +108,10 @@ typedef int ssize_t; #define MAX_CIPHER_IV_SIZE 16 -#define MAX_USERNAME_SIZE 128 +/* Maximum size of 2^16-1 has been chosen so that usernames can hold + * PSK identities as defined in RFC 4279 section 2 and RFC 8446 section 4.2.11 + */ +#define MAX_USERNAME_SIZE 65535 #define MAX_SERVER_NAME_SIZE 256 #define AEAD_EXPLICIT_DATA_SIZE 8 @@ -1438,7 +1441,10 @@ typedef struct { bool cert_hash_set; /* The saved username from PSK or SRP auth */ - char saved_username[MAX_USERNAME_SIZE+1]; + char *saved_username; + /* Length of the saved username without the NULL terminating byte. + * Must be set to -1 when saved username is NULL + */ int saved_username_size; /* Needed for TCP Fast Open (TFO), set by gnutls_transport_set_fastopen() */ Index: gnutls-3.7.3/lib/handshake-checks.c =================================================================== --- gnutls-3.7.3.orig/lib/handshake-checks.c +++ gnutls-3.7.3/lib/handshake-checks.c @@ -75,17 +75,27 @@ int _gnutls_check_id_for_change(gnutls_s if (username == NULL) return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); - if (session->internals.saved_username_size != -1) { + if (session->internals.saved_username && + session->internals.saved_username_size != -1) { if (session->internals.saved_username_size == username_length && - strncmp(session->internals.saved_username, username, username_length) != 0) { + strncmp(session->internals.saved_username, username, username_length)) { _gnutls_debug_log("Session's PSK username changed during rehandshake; aborting!\n"); return gnutls_assert_val(GNUTLS_E_SESSION_USER_ID_CHANGED); } - } else { - memcpy(session->internals.saved_username, username, username_length); - session->internals.saved_username[username_length] = 0; + } else if (session->internals.saved_username == NULL && + session->internals.saved_username_size == -1) { + if (username_length > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + char *tmp = gnutls_malloc(username_length + 1); + if (tmp == NULL) + return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); + memcpy(tmp, username, username_length); + tmp[username_length] = '\0'; + session->internals.saved_username = tmp; session->internals.saved_username_size = username_length; - } + } else + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + } return 0; Index: gnutls-3.7.3/lib/psk.c =================================================================== --- gnutls-3.7.3.orig/lib/psk.c +++ gnutls-3.7.3/lib/psk.c @@ -544,13 +544,7 @@ const char *gnutls_psk_client_get_hint(g CHECK_AUTH_TYPE(GNUTLS_CRD_PSK, NULL); info = _gnutls_get_auth_info(session, GNUTLS_CRD_PSK); - if (info == NULL) - return NULL; - - if (info->hint[0] != 0) - return info->hint; - - return NULL; + return info ? info->hint : NULL; } /** Index: gnutls-3.7.3/lib/session_pack.c =================================================================== --- gnutls-3.7.3.orig/lib/session_pack.c +++ gnutls-3.7.3/lib/session_pack.c @@ -600,8 +600,13 @@ pack_srp_auth_info(gnutls_session_t sess const char *username = NULL; if (info) { - username = info->username; - len = strlen(info->username) + 1; /* include the terminating null */ + if (info->username) { + username = info->username; + len = strlen(info->username) + 1; /* include the terminating null */ + } else { + username = "\0"; + len = 1; + } } else len = 0; @@ -627,26 +632,27 @@ unpack_srp_auth_info(gnutls_session_t se srp_server_auth_info_t info; BUFFER_POP_NUM(ps, username_size); - if (username_size > sizeof(info->username)) { - gnutls_assert(); - return GNUTLS_E_INTERNAL_ERROR; - } + if (username_size > MAX_USERNAME_SIZE + 1) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); - ret = - _gnutls_auth_info_init(session, GNUTLS_CRD_SRP, - sizeof(srp_server_auth_info_st), 1); - if (ret < 0) { - gnutls_assert(); - return ret; - } + ret = _gnutls_auth_info_init(session, GNUTLS_CRD_SRP, + sizeof(srp_server_auth_info_st), 1); + if (ret < 0) + return gnutls_assert_val(ret); info = _gnutls_get_auth_info(session, GNUTLS_CRD_SRP); if (info == NULL) return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + gnutls_free(info->username); + if (username_size == 0) { + info->username = NULL; + } else { + info->username = gnutls_malloc(username_size); + if (info->username == NULL) + return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); + } BUFFER_POP(ps, info->username, username_size); - if (username_size == 0) - info->username[0] = 0; ret = 0; @@ -777,14 +783,14 @@ pack_psk_auth_info(gnutls_session_t sess return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); username_len = info->username_len; - hint_len = strlen(info->hint) + 1; /* include the terminating null */ + hint_len = info->hint_len + 1; /* include the terminating null */ size_offset = ps->length; BUFFER_APPEND_NUM(ps, 0); cur_size = ps->length; BUFFER_APPEND_PFX4(ps, info->username, username_len); - BUFFER_APPEND_PFX4(ps, info->hint, hint_len); + BUFFER_APPEND_PFX4(ps, info->hint ? info->hint : "\0", hint_len); BUFFER_APPEND_NUM(ps, info->dh.secret_bits); BUFFER_APPEND_PFX4(ps, info->dh.prime.data, info->dh.prime.size); @@ -824,27 +830,28 @@ unpack_psk_auth_info(gnutls_session_t se return GNUTLS_E_INVALID_REQUEST; BUFFER_POP_NUM(ps, username_size); - if (username_size > (sizeof(info->username) - 1)) { - gnutls_assert(); - return GNUTLS_E_INTERNAL_ERROR; - } + if (username_size > MAX_USERNAME_SIZE) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + gnutls_free(info->username); + info->username = gnutls_malloc(username_size + 1); + if (info->username == NULL) + return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); BUFFER_POP(ps, info->username, username_size); - if (username_size == 0) - info->username[0] = 0; - - /* append a null terminator and set length */ info->username[username_size] = 0; info->username_len = username_size; + /* hint_size includes the terminating null */ BUFFER_POP_NUM(ps, hint_size); - if (hint_size > sizeof(info->hint)) { - gnutls_assert(); - return GNUTLS_E_INTERNAL_ERROR; - } + if (hint_size > MAX_USERNAME_SIZE + 1) + return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); + + gnutls_free(info->hint); + info->hint = gnutls_malloc(hint_size); + if (info->hint == NULL) + return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); BUFFER_POP(ps, info->hint, hint_size); - if (hint_size == 0) - info->hint[0] = 0; + info->hint_len = hint_size - 1; BUFFER_POP_NUM(ps, info->dh.secret_bits); Index: gnutls-3.7.3/lib/state.c =================================================================== --- gnutls-3.7.3.orig/lib/state.c +++ gnutls-3.7.3/lib/state.c @@ -662,6 +662,7 @@ int gnutls_init(gnutls_session_t * sessi (*session)->internals.pull_func = system_read; (*session)->internals.errno_func = system_errno; + (*session)->internals.saved_username = NULL; (*session)->internals.saved_username_size = -1; /* heartbeat timeouts */ @@ -753,6 +754,7 @@ void gnutls_deinit(gnutls_session_t sess gnutls_free(session->internals.rexts); gnutls_free(session->internals.post_handshake_cr_context.data); + gnutls_free(session->internals.saved_username); gnutls_free(session->internals.rsup); gnutls_credentials_clear(session);
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