wpa_supplicant/CVE-2019-9495-pre2.patch
2020-02-04 08:53:30 +08:00

93 lines
3.5 KiB
Diff

diff -Nur orig-wpa_supplicant-2.6/src/eap_common/eap_pwd_common.c wpa_supplicant-2.6/src/eap_common/eap_pwd_common.c
--- orig-wpa_supplicant-2.6/src/eap_common/eap_pwd_common.c 2020-02-04 00:21:51.805643103 +0800
+++ wpa_supplicant-2.6/src/eap_common/eap_pwd_common.c 2020-02-04 00:30:16.612332185 +0800
@@ -80,6 +80,26 @@
return 0;
}
+EAP_PWD_group * get_eap_pwd_group(u16 num)
+{
+ EAP_PWD_group *grp;
+
+ grp = os_zalloc(sizeof(EAP_PWD_group));
+ if (!grp)
+ return NULL;
+ grp->group = crypto_ec_init(num);
+ if (!grp->group) {
+ wpa_printf(MSG_INFO, "EAP-pwd: unable to create EC group");
+ os_free(grp);
+ return NULL;
+ }
+
+ grp->group_num = num;
+ wpa_printf(MSG_INFO, "EAP-pwd: provisioned group %d", num);
+
+ return grp;
+}
++
/*
* compute a "random" secret point on an elliptic curve based
@@ -97,12 +117,8 @@
size_t primebytelen, primebitlen;
struct crypto_bignum *x_candidate = NULL, *rnd = NULL, *cofactor = NULL;
- grp->pwe = NULL;
- grp->group = crypto_ec_init(num);
- if (!grp->group) {
- wpa_printf(MSG_INFO, "EAP-pwd: unable to create EC group");
- goto fail;
- }
+ if (grp->pwe)
+ return -1;
cofactor = crypto_bignum_init();
grp->pwe = crypto_ec_point_init(grp->group);
@@ -234,11 +250,8 @@
break;
}
wpa_printf(MSG_DEBUG, "EAP-pwd: found a PWE in %d tries", ctr);
- grp->group_num = num;
if (0) {
fail:
- crypto_ec_deinit(grp->group);
- grp->group = NULL;
crypto_ec_point_deinit(grp->pwe, 1);
grp->pwe = NULL;
ret = 1;
diff -Nur orig-wpa_supplicant-2.6/src/eap_common/eap_pwd_common.h wpa_supplicant-2.6/src/eap_common/eap_pwd_common.h
--- orig-wpa_supplicant-2.6/src/eap_common/eap_pwd_common.h 2020-02-04 00:21:51.805643103 +0800
+++ wpa_supplicant-2.6/src/eap_common/eap_pwd_common.h 2020-02-04 00:31:51.873594123 +0800
@@ -50,6 +50,7 @@
} STRUCT_PACKED;
/* common routines */
+EAP_PWD_group * get_eap_pwd_group(u16 num);
int compute_password_element(EAP_PWD_group *grp, u16 num,
const u8 *password, size_t password_len,
const u8 *id_server, size_t id_server_len,
diff -Nur orig-wpa_supplicant-2.6/src/eap_peer/eap_pwd.c wpa_supplicant-2.6/src/eap_peer/eap_pwd.c
--- orig-wpa_supplicant-2.6/src/eap_peer/eap_pwd.c 2020-02-04 00:21:51.805643103 +0800
+++ wpa_supplicant-2.6/src/eap_peer/eap_pwd.c 2020-02-04 00:33:35.694969340 +0800
@@ -267,7 +267,7 @@
wpa_hexdump_ascii(MSG_INFO, "EAP-PWD (peer): server sent id of",
data->id_server, data->id_server_len);
- data->grp = os_zalloc(sizeof(EAP_PWD_group));
+ data->grp = get_eap_pwd_group(data->group_num);
if (data->grp == NULL) {
wpa_printf(MSG_INFO, "EAP-PWD: failed to allocate memory for "
"group");
diff -Nur orig-wpa_supplicant-2.6/src/eap_server/eap_server_pwd.c wpa_supplicant-2.6/src/eap_server/eap_server_pwd.c
--- orig-wpa_supplicant-2.6/src/eap_server/eap_server_pwd.c 2020-02-04 00:21:51.805643103 +0800
+++ wpa_supplicant-2.6/src/eap_server/eap_server_pwd.c 2020-02-04 00:34:34.975754518 +0800
@@ -561,7 +561,7 @@
wpa_hexdump_ascii(MSG_DEBUG, "EAP-PWD (server): peer sent id of",
data->id_peer, data->id_peer_len);
- data->grp = os_zalloc(sizeof(EAP_PWD_group));
+ data->grp = get_eap_pwd_group(data->group_num);
if (data->grp == NULL) {
wpa_printf(MSG_INFO, "EAP-PWD: failed to allocate memory for "
"group");