diff options
Diffstat (limited to 'aports/wpa_supplicant/CVE-2019-16275.patch')
| -rw-r--r-- | aports/wpa_supplicant/CVE-2019-16275.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/aports/wpa_supplicant/CVE-2019-16275.patch b/aports/wpa_supplicant/CVE-2019-16275.patch deleted file mode 100644 index d764a9d..0000000 --- a/aports/wpa_supplicant/CVE-2019-16275.patch +++ /dev/null @@ -1,73 +0,0 @@ -From 8c07fa9eda13e835f3f968b2e1c9a8be3a851ff9 Mon Sep 17 00:00:00 2001 -From: Jouni Malinen <j@w1.fi> -Date: Thu, 29 Aug 2019 11:52:04 +0300 -Subject: [PATCH] AP: Silently ignore management frame from unexpected source - address - -Do not process any received Management frames with unexpected/invalid SA -so that we do not add any state for unexpected STA addresses or end up -sending out frames to unexpected destination. This prevents unexpected -sequences where an unprotected frame might end up causing the AP to send -out a response to another device and that other device processing the -unexpected response. - -In particular, this prevents some potential denial of service cases -where the unexpected response frame from the AP might result in a -connected station dropping its association. - -Signed-off-by: Jouni Malinen <j@w1.fi> ---- - src/ap/drv_callbacks.c | 13 +++++++++++++ - src/ap/ieee802_11.c | 12 ++++++++++++ - 2 files changed, 25 insertions(+) - -diff --git a/src/ap/drv_callbacks.c b/src/ap/drv_callbacks.c -index 31587685fe3b..34ca379edc3d 100644 ---- a/src/ap/drv_callbacks.c -+++ b/src/ap/drv_callbacks.c -@@ -131,6 +131,19 @@ int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr, - "hostapd_notif_assoc: Skip event with no address"); - return -1; - } -+ -+ if (is_multicast_ether_addr(addr) || -+ is_zero_ether_addr(addr) || -+ os_memcmp(addr, hapd->own_addr, ETH_ALEN) == 0) { -+ /* Do not process any frames with unexpected/invalid SA so that -+ * we do not add any state for unexpected STA addresses or end -+ * up sending out frames to unexpected destination. */ -+ wpa_printf(MSG_DEBUG, "%s: Invalid SA=" MACSTR -+ " in received indication - ignore this indication silently", -+ __func__, MAC2STR(addr)); -+ return 0; -+ } -+ - random_add_randomness(addr, ETH_ALEN); - - hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211, -diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c -index c85a28db44b7..e7065372e158 100644 ---- a/src/ap/ieee802_11.c -+++ b/src/ap/ieee802_11.c -@@ -4626,6 +4626,18 @@ int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, - fc = le_to_host16(mgmt->frame_control); - stype = WLAN_FC_GET_STYPE(fc); - -+ if (is_multicast_ether_addr(mgmt->sa) || -+ is_zero_ether_addr(mgmt->sa) || -+ os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { -+ /* Do not process any frames with unexpected/invalid SA so that -+ * we do not add any state for unexpected STA addresses or end -+ * up sending out frames to unexpected destination. */ -+ wpa_printf(MSG_DEBUG, "MGMT: Invalid SA=" MACSTR -+ " in received frame - ignore this frame silently", -+ MAC2STR(mgmt->sa)); -+ return 0; -+ } -+ - if (stype == WLAN_FC_STYPE_BEACON) { - handle_beacon(hapd, mgmt, len, fi); - return 1; --- -2.20.1 - |