From 43ff6e641e7c321ab3b67c43ba73a6877d8f0439 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Petr=20=C5=A0tetiar?= Date: Thu, 4 Feb 2021 09:10:05 +0100 Subject: [PATCH] hostapd: add forgotten patch for P2P vulnerability fix MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Commit 7c8c4f1be648 ("hostapd: fix P2P group information processing vulnerability") was missing the actual patch for the vulnerability. Fixes: 7c8c4f1be648 ("hostapd: fix P2P group information processing vulnerability") Signed-off-by: Petr Å tetiar --- package/network/services/hostapd/Makefile | 2 +- ...of-secondary-device-types-for-P2P-gr.patch | 38 +++++++++++++++++++ 2 files changed, 39 insertions(+), 1 deletion(-) create mode 100644 package/network/services/hostapd/patches/801-P2P-Fix-copying-of-secondary-device-types-for-P2P-gr.patch diff --git a/package/network/services/hostapd/Makefile b/package/network/services/hostapd/Makefile index 3b6ce617d31..6ab97c6e925 100644 --- a/package/network/services/hostapd/Makefile +++ b/package/network/services/hostapd/Makefile @@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=hostapd -PKG_RELEASE:=29 +PKG_RELEASE:=30 PKG_SOURCE_URL:=http://w1.fi/hostap.git PKG_SOURCE_PROTO:=git diff --git a/package/network/services/hostapd/patches/801-P2P-Fix-copying-of-secondary-device-types-for-P2P-gr.patch b/package/network/services/hostapd/patches/801-P2P-Fix-copying-of-secondary-device-types-for-P2P-gr.patch new file mode 100644 index 00000000000..4657b55d857 --- /dev/null +++ b/package/network/services/hostapd/patches/801-P2P-Fix-copying-of-secondary-device-types-for-P2P-gr.patch @@ -0,0 +1,38 @@ +From 947272febe24a8f0ea828b5b2f35f13c3821901e Mon Sep 17 00:00:00 2001 +From: Jouni Malinen +Date: Mon, 9 Nov 2020 11:43:12 +0200 +Subject: [PATCH] P2P: Fix copying of secondary device types for P2P group + client + +Parsing and copying of WPS secondary device types list was verifying +that the contents is not too long for the internal maximum in the case +of WPS messages, but similar validation was missing from the case of P2P +group information which encodes this information in a different +attribute. This could result in writing beyond the memory area assigned +for these entries and corrupting memory within an instance of struct +p2p_device. This could result in invalid operations and unexpected +behavior when trying to free pointers from that corrupted memory. + +Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27269 +Fixes: e57ae6e19edf ("P2P: Keep track of secondary device types for peers") +Signed-off-by: Jouni Malinen +--- + src/p2p/p2p.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/src/p2p/p2p.c b/src/p2p/p2p.c +index 74b7b52ae05c..5cbfc217fc1f 100644 +--- a/src/p2p/p2p.c ++++ b/src/p2p/p2p.c +@@ -453,6 +453,8 @@ static void p2p_copy_client_info(struct p2p_device *dev, + dev->info.config_methods = cli->config_methods; + os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); + dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; ++ if (dev->info.wps_sec_dev_type_list_len > WPS_SEC_DEV_TYPE_MAX_LEN) ++ dev->info.wps_sec_dev_type_list_len = WPS_SEC_DEV_TYPE_MAX_LEN; + os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, + dev->info.wps_sec_dev_type_list_len); + } +-- +2.25.1 + -- 2.30.2