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authorV3n3RiX <venerix@redcorelinux.org>2017-10-09 18:53:29 +0100
committerV3n3RiX <venerix@redcorelinux.org>2017-10-09 18:53:29 +0100
commit4f2d7949f03e1c198bc888f2d05f421d35c57e21 (patch)
treeba5f07bf3f9d22d82e54a462313f5d244036c768 /net-wireless/wpa_supplicant/files/2015-7
reinit the tree, so we can have metadata
Diffstat (limited to 'net-wireless/wpa_supplicant/files/2015-7')
-rw-r--r--net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-peer-Fix-last-fragment-length-validation.patch54
-rw-r--r--net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-server-Fix-last-fragment-length-validation.patch51
2 files changed, 105 insertions, 0 deletions
diff --git a/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-peer-Fix-last-fragment-length-validation.patch b/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-peer-Fix-last-fragment-length-validation.patch
new file mode 100644
index 000000000000..82c26398b69d
--- /dev/null
+++ b/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-peer-Fix-last-fragment-length-validation.patch
@@ -0,0 +1,54 @@
+From 8057821706784608b828e769ccefbced95591e50 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <j@w1.fi>
+Date: Sun, 1 Nov 2015 18:18:17 +0200
+Subject: [PATCH] EAP-pwd peer: Fix last fragment length validation
+
+All but the last fragment had their length checked against the remaining
+room in the reassembly buffer. This allowed a suitably constructed last
+fragment frame to try to add extra data that would go beyond the buffer.
+The length validation code in wpabuf_put_data() prevents an actual
+buffer write overflow from occurring, but this results in process
+termination. (CVE-2015-5315)
+
+Signed-off-by: Jouni Malinen <j@w1.fi>
+---
+ src/eap_peer/eap_pwd.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/src/eap_peer/eap_pwd.c b/src/eap_peer/eap_pwd.c
+index 1f78544..75ceef1 100644
+--- a/src/eap_peer/eap_pwd.c
++++ b/src/eap_peer/eap_pwd.c
+@@ -903,7 +903,7 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct eap_method_ret *ret,
+ /*
+ * buffer and ACK the fragment
+ */
+- if (EAP_PWD_GET_MORE_BIT(lm_exch)) {
++ if (EAP_PWD_GET_MORE_BIT(lm_exch) || data->in_frag_pos) {
+ data->in_frag_pos += len;
+ if (data->in_frag_pos > wpabuf_size(data->inbuf)) {
+ wpa_printf(MSG_INFO, "EAP-pwd: Buffer overflow attack "
+@@ -916,7 +916,8 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct eap_method_ret *ret,
+ return NULL;
+ }
+ wpabuf_put_data(data->inbuf, pos, len);
+-
++ }
++ if (EAP_PWD_GET_MORE_BIT(lm_exch)) {
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PWD,
+ EAP_PWD_HDR_SIZE,
+ EAP_CODE_RESPONSE, eap_get_id(reqData));
+@@ -930,10 +931,8 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct eap_method_ret *ret,
+ * we're buffering and this is the last fragment
+ */
+ if (data->in_frag_pos) {
+- wpabuf_put_data(data->inbuf, pos, len);
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Last fragment, %d bytes",
+ (int) len);
+- data->in_frag_pos += len;
+ pos = wpabuf_head_u8(data->inbuf);
+ len = data->in_frag_pos;
+ }
+--
+1.9.1
+
diff --git a/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-server-Fix-last-fragment-length-validation.patch b/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-server-Fix-last-fragment-length-validation.patch
new file mode 100644
index 000000000000..bfc4c74e95ca
--- /dev/null
+++ b/net-wireless/wpa_supplicant/files/2015-7/0001-EAP-pwd-server-Fix-last-fragment-length-validation.patch
@@ -0,0 +1,51 @@
+From bef802ece03f9ae9d52a21f0cf4f1bc2c5a1f8aa Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <j@w1.fi>
+Date: Sun, 1 Nov 2015 18:24:16 +0200
+Subject: [PATCH] EAP-pwd server: Fix last fragment length validation
+
+All but the last fragment had their length checked against the remaining
+room in the reassembly buffer. This allowed a suitably constructed last
+fragment frame to try to add extra data that would go beyond the buffer.
+The length validation code in wpabuf_put_data() prevents an actual
+buffer write overflow from occurring, but this results in process
+termination. (CVE-2015-5314)
+
+Signed-off-by: Jouni Malinen <j@w1.fi>
+---
+ src/eap_server/eap_server_pwd.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/eap_server/eap_server_pwd.c b/src/eap_server/eap_server_pwd.c
+index cb83ff7..9f787ab 100644
+--- a/src/eap_server/eap_server_pwd.c
++++ b/src/eap_server/eap_server_pwd.c
+@@ -970,7 +970,7 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv,
+ /*
+ * the first and all intermediate fragments have the M bit set
+ */
+- if (EAP_PWD_GET_MORE_BIT(lm_exch)) {
++ if (EAP_PWD_GET_MORE_BIT(lm_exch) || data->in_frag_pos) {
+ if ((data->in_frag_pos + len) > wpabuf_size(data->inbuf)) {
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Buffer overflow "
+ "attack detected! (%d+%d > %d)",
+@@ -981,6 +981,8 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv,
+ }
+ wpabuf_put_data(data->inbuf, pos, len);
+ data->in_frag_pos += len;
++ }
++ if (EAP_PWD_GET_MORE_BIT(lm_exch)) {
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Got a %d byte fragment",
+ (int) len);
+ return;
+@@ -990,8 +992,6 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv,
+ * buffering fragments so that's how we know it's the last)
+ */
+ if (data->in_frag_pos) {
+- wpabuf_put_data(data->inbuf, pos, len);
+- data->in_frag_pos += len;
+ pos = wpabuf_head_u8(data->inbuf);
+ len = data->in_frag_pos;
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Last fragment, %d bytes",
+--
+1.9.1
+