espressif/esp-idf
1
0
Fork 1
mirror of https://github.com/espressif/esp-idf.git synced 2025-07-30 02:37:19 +02:00
Code Issues Packages Projects Releases Wiki Activity

wpa_supplicant: Prevent reinstallation of an already in-use group key

Browse Source
This commit is contained in:
Kapil Gupta
2021-04-06 18:08:44 +05:30
committed by Hrudaynath Dhabe
parent 1ce0d7bcf4
commit c5f0a609c8
3 changed files with 20 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
components/wpa_supplicant/src/common/wpa_common.h
View File

@ -172,6 +172,11 @@ struct wpa_ptk {
} u;
} STRUCT_PACKED;
struct wpa_gtk {
u8 gtk[WPA_GTK_MAX_LEN];
size_t gtk_len;
};
struct wpa_gtk_data {
enum wpa_alg alg;
int tx, key_rsc_len, keyidx;

16
components/wpa_supplicant/src/rsn_supp/wpa.c
View File

@ -805,11 +805,20 @@ int wpa_supplicant_install_gtk(struct wpa_sm *sm,
wpa_hexdump(MSG_DEBUG, "WPA: Group Key", gd->gtk, gd->gtk_len);
#ifdef DEBUG_PRINT
/* Detect possible key reinstallation */
if (sm->gtk.gtk_len == (size_t) gd->gtk_len &&
os_memcmp(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len) == 0) {
wpa_printf(MSG_DEBUG,
"WPA: Not reinstalling already in-use GTK to the driver (keyidx=%d tx=%d len=%d)",
gd->keyidx, gd->tx, gd->gtk_len);
return 0;
}
#ifdef DEBUG_PRINT
wpa_printf(MSG_DEBUG, "WPA: Installing GTK to the driver "
"(keyidx=%d tx=%d len=%d).\n", gd->keyidx, gd->tx,
gd->gtk_len);
#endif
#endif
wpa_hexdump(MSG_DEBUG, "WPA: RSC", key_rsc, gd->key_rsc_len);
if (sm->group_cipher == WPA_CIPHER_TKIP) {
/* Swap Tx/Rx keys for Michael MIC */
@ -843,6 +852,9 @@ int wpa_supplicant_install_gtk(struct wpa_sm *sm,
return -1;
}
sm->gtk.gtk_len = gd->gtk_len;
os_memcpy(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len);
return 0;
}

1
components/wpa_supplicant/src/rsn_supp/wpa_i.h
View File

@ -41,6 +41,7 @@ struct wpa_sm {
u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
int rx_replay_counter_set;
u8 request_counter[WPA_REPLAY_COUNTER_LEN];
struct wpa_gtk gtk;
struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */