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network/hostapd: Patched for P2P/wpa_supplicant vulnerabilities.
Signed-off-by: Dave Woodfall <dave@slackbuilds.org> Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
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parent
2949930cdd
commit
5a24871ec8
4 changed files with 94 additions and 6 deletions
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@ -1,7 +1,7 @@
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hostapd - IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
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hostapd is a user space daemon for access point and authentication servers.
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It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP
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Authenticators, RADIUS client, EAP server, and RADIUS authentication server.
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The current version supports Linux (Host AP, madwifi, Prism54 drivers) and
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FreeBSD (net80211).
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hostapd is a user space daemon for access point and authentication
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servers. It implements IEEE 802.11 access point management, IEEE
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802.1X/WPA/WPA2/EAP Authenticators, RADIUS client, EAP server, and
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RADIUS authentication server. The current version supports Linux (Host
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AP, madwifi, Prism54 drivers) and FreeBSD (net80211).
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@ -28,7 +28,7 @@
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PRGNAM=hostapd
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VERSION=${VERSION:-2.9}
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BUILD=${BUILD:-2}
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BUILD=${BUILD:-3}
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TAG=${TAG:-_SBo}
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if [ -z "$ARCH" ]; then
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@ -0,0 +1,50 @@
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From 8460e3230988ef2ec13ce6b69b687e941f6cdb32 Mon Sep 17 00:00:00 2001
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From: Jouni Malinen <jouni@codeaurora.org>
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Date: Tue, 8 Dec 2020 23:52:50 +0200
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Subject: [PATCH] P2P: Fix a corner case in peer addition based on PD Request
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p2p_add_device() may remove the oldest entry if there is no room in the
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peer table for a new peer. This would result in any pointer to that
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removed entry becoming stale. A corner case with an invalid PD Request
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frame could result in such a case ending up using (read+write) freed
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memory. This could only by triggered when the peer table has reached its
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maximum size and the PD Request frame is received from the P2P Device
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Address of the oldest remaining entry and the frame has incorrect P2P
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Device Address in the payload.
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Fix this by fetching the dev pointer again after having called
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p2p_add_device() so that the stale pointer cannot be used.
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Fixes: 17bef1e97a50 ("P2P: Add peer entry based on Provision Discovery Request")
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Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
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---
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src/p2p/p2p_pd.c | 12 +++++-------
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1 file changed, 5 insertions(+), 7 deletions(-)
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diff --git a/src/p2p/p2p_pd.c b/src/p2p/p2p_pd.c
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index 3994ec03f86b..05fd593494ef 100644
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--- a/src/p2p/p2p_pd.c
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+++ b/src/p2p/p2p_pd.c
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@@ -595,14 +595,12 @@ void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
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goto out;
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}
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+ dev = p2p_get_device(p2p, sa);
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if (!dev) {
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- dev = p2p_get_device(p2p, sa);
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- if (!dev) {
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- p2p_dbg(p2p,
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- "Provision Discovery device not found "
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- MACSTR, MAC2STR(sa));
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- goto out;
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- }
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+ p2p_dbg(p2p,
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+ "Provision Discovery device not found "
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+ MACSTR, MAC2STR(sa));
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+ goto out;
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}
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} else if (msg.wfd_subelems) {
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wpabuf_free(dev->info.wfd_subelems);
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--
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2.25.1
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@ -0,0 +1,38 @@
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From 947272febe24a8f0ea828b5b2f35f13c3821901e Mon Sep 17 00:00:00 2001
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From: Jouni Malinen <jouni@codeaurora.org>
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Date: Mon, 9 Nov 2020 11:43:12 +0200
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Subject: [PATCH] P2P: Fix copying of secondary device types for P2P group
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client
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Parsing and copying of WPS secondary device types list was verifying
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that the contents is not too long for the internal maximum in the case
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of WPS messages, but similar validation was missing from the case of P2P
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group information which encodes this information in a different
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attribute. This could result in writing beyond the memory area assigned
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for these entries and corrupting memory within an instance of struct
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p2p_device. This could result in invalid operations and unexpected
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behavior when trying to free pointers from that corrupted memory.
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Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27269
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Fixes: e57ae6e19edf ("P2P: Keep track of secondary device types for peers")
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Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
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---
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src/p2p/p2p.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/src/p2p/p2p.c b/src/p2p/p2p.c
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index 74b7b52ae05c..5cbfc217fc1f 100644
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--- a/src/p2p/p2p.c
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+++ b/src/p2p/p2p.c
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@@ -453,6 +453,8 @@ static void p2p_copy_client_info(struct p2p_device *dev,
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dev->info.config_methods = cli->config_methods;
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os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
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dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
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+ if (dev->info.wps_sec_dev_type_list_len > WPS_SEC_DEV_TYPE_MAX_LEN)
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+ dev->info.wps_sec_dev_type_list_len = WPS_SEC_DEV_TYPE_MAX_LEN;
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os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
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dev->info.wps_sec_dev_type_list_len);
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}
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--
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2.25.1
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