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01/01: gnu: wpa-supplicant: Add security fixes.
|
From: |
Mark H. Weaver |
|
Subject: |
01/01: gnu: wpa-supplicant: Add security fixes. |
|
Date: |
Mon, 11 May 2015 16:51:53 +0000 |
mhw pushed a commit to branch master
in repository guix.
commit d48c8e7b6070a63dc12ead0bb9ea47b790e237f0
Author: Mark H Weaver <address@hidden>
Date: Mon May 11 12:46:31 2015 -0400
gnu: wpa-supplicant: Add security fixes.
* gnu/packages/patches/wpa-supplicant-2015-2-fix.patch,
gnu/packages/patches/wpa-supplicant-2015-3-fix.patch,
gnu/packages/patches/wpa-supplicant-2015-4-fix-pt1.patch,
gnu/packages/patches/wpa-supplicant-2015-4-fix-pt2.patch,
gnu/packages/patches/wpa-supplicant-2015-4-fix-pt3.patch,
gnu/packages/patches/wpa-supplicant-2015-4-fix-pt4.patch,
gnu/packages/patches/wpa-supplicant-2015-4-fix-pt5.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/admin.scm (wpa-supplicant-light)[source]: Add patches.
---
gnu-system.am | 7 ++
gnu/packages/admin.scm | 9 ++-
.../patches/wpa-supplicant-2015-2-fix.patch | 51 +++++++++++++
.../patches/wpa-supplicant-2015-3-fix.patch | 43 +++++++++++
.../patches/wpa-supplicant-2015-4-fix-pt1.patch | 75 ++++++++++++++++++++
.../patches/wpa-supplicant-2015-4-fix-pt2.patch | 68 ++++++++++++++++++
.../patches/wpa-supplicant-2015-4-fix-pt3.patch | 54 ++++++++++++++
.../patches/wpa-supplicant-2015-4-fix-pt4.patch | 52 ++++++++++++++
.../patches/wpa-supplicant-2015-4-fix-pt5.patch | 34 +++++++++
9 files changed, 392 insertions(+), 1 deletions(-)
diff --git a/gnu-system.am b/gnu-system.am
index 0932ef4..6804fd3 100644
--- a/gnu-system.am
+++ b/gnu-system.am
@@ -567,6 +567,13 @@ dist_patch_DATA =
\
gnu/packages/patches/wicd-urwid-1.3.patch \
gnu/packages/patches/wmctrl-64-fix.patch \
gnu/packages/patches/wpa-supplicant-CVE-2015-1863.patch \
+ gnu/packages/patches/wpa-supplicant-2015-2-fix.patch \
+ gnu/packages/patches/wpa-supplicant-2015-3-fix.patch \
+ gnu/packages/patches/wpa-supplicant-2015-4-fix-pt1.patch \
+ gnu/packages/patches/wpa-supplicant-2015-4-fix-pt2.patch \
+ gnu/packages/patches/wpa-supplicant-2015-4-fix-pt3.patch \
+ gnu/packages/patches/wpa-supplicant-2015-4-fix-pt4.patch \
+ gnu/packages/patches/wpa-supplicant-2015-4-fix-pt5.patch \
gnu/packages/patches/xf86-video-ark-remove-mibstore.patch \
gnu/packages/patches/xf86-video-ast-remove-mibstore.patch \
gnu/packages/patches/xf86-video-geode-glibc-2.20.patch \
diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index 319bfad..883f25d 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -704,7 +704,14 @@ commands and their arguments.")
(base32
"08li21q1wjn5chrv289w666il9ah1w419y3dkq2rl4wnq0rci385"))
(patches
- (list (search-patch "wpa-supplicant-CVE-2015-1863.patch")))))
+ (map search-patch '("wpa-supplicant-CVE-2015-1863.patch"
+ "wpa-supplicant-2015-2-fix.patch"
+ "wpa-supplicant-2015-3-fix.patch"
+ "wpa-supplicant-2015-4-fix-pt1.patch"
+ "wpa-supplicant-2015-4-fix-pt2.patch"
+ "wpa-supplicant-2015-4-fix-pt3.patch"
+ "wpa-supplicant-2015-4-fix-pt4.patch"
+ "wpa-supplicant-2015-4-fix-pt5.patch")))))
(build-system gnu-build-system)
(arguments
'(#:phases (alist-replace
diff --git a/gnu/packages/patches/wpa-supplicant-2015-2-fix.patch
b/gnu/packages/patches/wpa-supplicant-2015-2-fix.patch
new file mode 100644
index 0000000..cd09700
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-2-fix.patch
@@ -0,0 +1,51 @@
+Patch copied from http://w1.fi/security/2015-2/
+
+From 5acd23f4581da58683f3cf5e36cb71bbe4070bd7 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Tue, 28 Apr 2015 17:08:33 +0300
+Subject: [PATCH] WPS: Fix HTTP chunked transfer encoding parser
+
+strtoul() return value may end up overflowing the int h->chunk_size and
+resulting in a negative value to be stored as the chunk_size. This could
+result in the following memcpy operation using a very large length
+argument which would result in a buffer overflow and segmentation fault.
+
+This could have been used to cause a denial service by any device that
+has been authorized for network access (either wireless or wired). This
+would affect both the WPS UPnP functionality in a WPS AP (hostapd with
+upnp_iface parameter set in the configuration) and WPS ER
+(wpa_supplicant with WPS_ER_START control interface command used).
+
+Validate the parsed chunk length value to avoid this. In addition to
+rejecting negative values, we can also reject chunk size that would be
+larger than the maximum configured body length.
+
+Thanks to Kostya Kortchinsky of Google security team for discovering and
+reporting this issue.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/wps/httpread.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/wps/httpread.c b/src/wps/httpread.c
+index 2f08f37..d2855e3 100644
+--- a/src/wps/httpread.c
++++ b/src/wps/httpread.c
+@@ -533,6 +533,13 @@ static void httpread_read_handler(int sd, void
*eloop_ctx, void *sock_ctx)
+ if (!isxdigit(*cbp))
+ goto bad;
+ h->chunk_size = strtoul(cbp, NULL, 16);
++ if (h->chunk_size < 0 ||
++ h->chunk_size > h->max_bytes) {
++ wpa_printf(MSG_DEBUG,
++ "httpread: Invalid
chunk size %d",
++ h->chunk_size);
++ goto bad;
++ }
+ /* throw away chunk header
+ * so we have only real data
+ */
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-3-fix.patch
b/gnu/packages/patches/wpa-supplicant-2015-3-fix.patch
new file mode 100644
index 0000000..de042f0
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-3-fix.patch
@@ -0,0 +1,43 @@
+Patch copied from http://w1.fi/security/2015-3/
+
+From ef566a4d4f74022e1fdb0a2addfe81e6de9f4aae Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Wed, 29 Apr 2015 02:21:53 +0300
+Subject: [PATCH] AP WMM: Fix integer underflow in WMM Action frame parser
+
+The length of the WMM Action frame was not properly validated and the
+length of the information elements (int left) could end up being
+negative. This would result in reading significantly past the stack
+buffer while parsing the IEs in ieee802_11_parse_elems() and while doing
+so, resulting in segmentation fault.
+
+This can result in an invalid frame being used for a denial of service
+attack (hostapd process killed) against an AP with a driver that uses
+hostapd for management frame processing (e.g., all mac80211-based
+drivers).
+
+Thanks to Kostya Kortchinsky of Google security team for discovering and
+reporting this issue.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/ap/wmm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/ap/wmm.c b/src/ap/wmm.c
+index 6d4177c..314e244 100644
+--- a/src/ap/wmm.c
++++ b/src/ap/wmm.c
+@@ -274,6 +274,9 @@ void hostapd_wmm_action(struct hostapd_data *hapd,
+ return;
+ }
+
++ if (left < 0)
++ return; /* not a valid WMM Action frame */
++
+ /* extract the tspec info element */
+ if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed) {
+ hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt1.patch
b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt1.patch
new file mode 100644
index 0000000..7ebf5f4
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt1.patch
@@ -0,0 +1,75 @@
+Patch copied from http://w1.fi/security/2015-4/
+
+From dd2f043c9c43d156494e33d7ce22db96e6ef42c7 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Fri, 1 May 2015 16:37:45 +0300
+Subject: [PATCH 1/5] EAP-pwd peer: Fix payload length validation for Commit
+ and Confirm
+
+The length of the received Commit and Confirm message payloads was not
+checked before reading them. This could result in a buffer read
+overflow when processing an invalid message.
+
+Fix this by verifying that the payload is of expected length before
+processing it. In addition, enforce correct state transition sequence to
+make sure there is no unexpected behavior if receiving a Commit/Confirm
+message before the previous exchanges have been completed.
+
+Thanks to Kostya Kortchinsky of Google security team for discovering and
+reporting this issue.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/eap_peer/eap_pwd.c | 29 +++++++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+diff --git a/src/eap_peer/eap_pwd.c b/src/eap_peer/eap_pwd.c
+index f2b0926..a629437 100644
+--- a/src/eap_peer/eap_pwd.c
++++ b/src/eap_peer/eap_pwd.c
+@@ -355,6 +355,23 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct
eap_pwd_data *data,
+ BIGNUM *mask = NULL, *x = NULL, *y = NULL, *cofactor = NULL;
+ u16 offset;
+ u8 *ptr, *scalar = NULL, *element = NULL;
++ size_t prime_len, order_len;
++
++ if (data->state != PWD_Commit_Req) {
++ ret->ignore = TRUE;
++ goto fin;
++ }
++
++ prime_len = BN_num_bytes(data->grp->prime);
++ order_len = BN_num_bytes(data->grp->order);
++
++ if (payload_len != 2 * prime_len + order_len) {
++ wpa_printf(MSG_INFO,
++ "EAP-pwd: Unexpected Commit payload length %u
(expected %u)",
++ (unsigned int) payload_len,
++ (unsigned int) (2 * prime_len + order_len));
++ goto fin;
++ }
+
+ if (((data->private_value = BN_new()) == NULL) ||
+ ((data->my_element = EC_POINT_new(data->grp->group)) == NULL) ||
+@@ -554,6 +571,18 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm,
struct eap_pwd_data *data,
+ u8 conf[SHA256_MAC_LEN], *cruft = NULL, *ptr;
+ int offset;
+
++ if (data->state != PWD_Confirm_Req) {
++ ret->ignore = TRUE;
++ goto fin;
++ }
++
++ if (payload_len != SHA256_MAC_LEN) {
++ wpa_printf(MSG_INFO,
++ "EAP-pwd: Unexpected Confirm payload length %u
(expected %u)",
++ (unsigned int) payload_len, SHA256_MAC_LEN);
++ goto fin;
++ }
++
+ /*
+ * first build up the ciphersuite which is group | random_function |
+ * prf
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt2.patch
b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt2.patch
new file mode 100644
index 0000000..c11e417
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt2.patch
@@ -0,0 +1,68 @@
+Patch copied from http://w1.fi/security/2015-4/
+
+From e28a58be26184c2a23f80b410e0997ef1bd5d578 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Fri, 1 May 2015 16:40:44 +0300
+Subject: [PATCH 2/5] EAP-pwd server: Fix payload length validation for Commit
+ and Confirm
+
+The length of the received Commit and Confirm message payloads was not
+checked before reading them. This could result in a buffer read
+overflow when processing an invalid message.
+
+Fix this by verifying that the payload is of expected length before
+processing it. In addition, enforce correct state transition sequence to
+make sure there is no unexpected behavior if receiving a Commit/Confirm
+message before the previous exchanges have been completed.
+
+Thanks to Kostya Kortchinsky of Google security team for discovering and
+reporting this issue.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/eap_server/eap_server_pwd.c | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+diff --git a/src/eap_server/eap_server_pwd.c b/src/eap_server/eap_server_pwd.c
+index 66bd5d2..3189105 100644
+--- a/src/eap_server/eap_server_pwd.c
++++ b/src/eap_server/eap_server_pwd.c
+@@ -656,9 +656,21 @@ eap_pwd_process_commit_resp(struct eap_sm *sm, struct
eap_pwd_data *data,
+ BIGNUM *x = NULL, *y = NULL, *cofactor = NULL;
+ EC_POINT *K = NULL, *point = NULL;
+ int res = 0;
++ size_t prime_len, order_len;
+
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Received commit response");
+
++ prime_len = BN_num_bytes(data->grp->prime);
++ order_len = BN_num_bytes(data->grp->order);
++
++ if (payload_len != 2 * prime_len + order_len) {
++ wpa_printf(MSG_INFO,
++ "EAP-pwd: Unexpected Commit payload length %u
(expected %u)",
++ (unsigned int) payload_len,
++ (unsigned int) (2 * prime_len + order_len));
++ goto fin;
++ }
++
+ if (((data->peer_scalar = BN_new()) == NULL) ||
+ ((data->k = BN_new()) == NULL) ||
+ ((cofactor = BN_new()) == NULL) ||
+@@ -774,6 +786,13 @@ eap_pwd_process_confirm_resp(struct eap_sm *sm, struct
eap_pwd_data *data,
+ u8 conf[SHA256_MAC_LEN], *cruft = NULL, *ptr;
+ int offset;
+
++ if (payload_len != SHA256_MAC_LEN) {
++ wpa_printf(MSG_INFO,
++ "EAP-pwd: Unexpected Confirm payload length %u
(expected %u)",
++ (unsigned int) payload_len, SHA256_MAC_LEN);
++ goto fin;
++ }
++
+ /* build up the ciphersuite: group | random_function | prf */
+ grp = htons(data->group_num);
+ ptr = (u8 *) &cs;
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt3.patch
b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt3.patch
new file mode 100644
index 0000000..963dac9
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt3.patch
@@ -0,0 +1,54 @@
+Patch copied from http://w1.fi/security/2015-4/
+
+From 477c74395acd0123340457ba6f15ab345d42016e Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Sat, 2 May 2015 19:23:04 +0300
+Subject: [PATCH 3/5] EAP-pwd peer: Fix Total-Length parsing for fragment
+ reassembly
+
+The remaining number of bytes in the message could be smaller than the
+Total-Length field size, so the length needs to be explicitly checked
+prior to reading the field and decrementing the len variable. This could
+have resulted in the remaining length becoming negative and interpreted
+as a huge positive integer.
+
+In addition, check that there is no already started fragment in progress
+before allocating a new buffer for reassembling fragments. This avoid a
+potential memory leak when processing invalid message.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/eap_peer/eap_pwd.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/src/eap_peer/eap_pwd.c b/src/eap_peer/eap_pwd.c
+index a629437..1d2079b 100644
+--- a/src/eap_peer/eap_pwd.c
++++ b/src/eap_peer/eap_pwd.c
+@@ -866,11 +866,23 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct
eap_method_ret *ret,
+ * if it's the first fragment there'll be a length field
+ */
+ if (EAP_PWD_GET_LENGTH_BIT(lm_exch)) {
++ if (len < 2) {
++ wpa_printf(MSG_DEBUG,
++ "EAP-pwd: Frame too short to contain
Total-Length field");
++ ret->ignore = TRUE;
++ return NULL;
++ }
+ tot_len = WPA_GET_BE16(pos);
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Incoming fragments whose "
+ "total length = %d", tot_len);
+ if (tot_len > 15000)
+ return NULL;
++ if (data->inbuf) {
++ wpa_printf(MSG_DEBUG,
++ "EAP-pwd: Unexpected new fragment start when
previous fragment is still in use");
++ ret->ignore = TRUE;
++ return NULL;
++ }
+ data->inbuf = wpabuf_alloc(tot_len);
+ if (data->inbuf == NULL) {
+ wpa_printf(MSG_INFO, "Out of memory to buffer "
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt4.patch
b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt4.patch
new file mode 100644
index 0000000..3d94538
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt4.patch
@@ -0,0 +1,52 @@
+Patch copied from http://w1.fi/security/2015-4/
+
+From 3035cc2894e08319b905bd6561e8bddc8c2db9fa Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Sat, 2 May 2015 19:26:06 +0300
+Subject: [PATCH 4/5] EAP-pwd server: Fix Total-Length parsing for fragment
+ reassembly
+
+The remaining number of bytes in the message could be smaller than the
+Total-Length field size, so the length needs to be explicitly checked
+prior to reading the field and decrementing the len variable. This could
+have resulted in the remaining length becoming negative and interpreted
+as a huge positive integer.
+
+In addition, check that there is no already started fragment in progress
+before allocating a new buffer for reassembling fragments. This avoid a
+potential memory leak when processing invalid message.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/eap_server/eap_server_pwd.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/src/eap_server/eap_server_pwd.c b/src/eap_server/eap_server_pwd.c
+index 3189105..2bfc3c2 100644
+--- a/src/eap_server/eap_server_pwd.c
++++ b/src/eap_server/eap_server_pwd.c
+@@ -942,11 +942,21 @@ static void eap_pwd_process(struct eap_sm *sm, void
*priv,
+ * the first fragment has a total length
+ */
+ if (EAP_PWD_GET_LENGTH_BIT(lm_exch)) {
++ if (len < 2) {
++ wpa_printf(MSG_DEBUG,
++ "EAP-pwd: Frame too short to contain
Total-Length field");
++ return;
++ }
+ tot_len = WPA_GET_BE16(pos);
+ wpa_printf(MSG_DEBUG, "EAP-pwd: Incoming fragments, total "
+ "length = %d", tot_len);
+ if (tot_len > 15000)
+ return;
++ if (data->inbuf) {
++ wpa_printf(MSG_DEBUG,
++ "EAP-pwd: Unexpected new fragment start when
previous fragment is still in use");
++ return;
++ }
+ data->inbuf = wpabuf_alloc(tot_len);
+ if (data->inbuf == NULL) {
+ wpa_printf(MSG_INFO, "EAP-pwd: Out of memory to "
+--
+1.9.1
+
diff --git a/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt5.patch
b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt5.patch
new file mode 100644
index 0000000..30f7197
--- /dev/null
+++ b/gnu/packages/patches/wpa-supplicant-2015-4-fix-pt5.patch
@@ -0,0 +1,34 @@
+Patch copied from http://w1.fi/security/2015-4/
+
+From 28a069a545b06b99eb55ad53f63f2c99e65a98f6 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <address@hidden>
+Date: Sat, 2 May 2015 19:26:28 +0300
+Subject: [PATCH 5/5] EAP-pwd peer: Fix asymmetric fragmentation behavior
+
+The L (Length) and M (More) flags needs to be cleared before deciding
+whether the locally generated response requires fragmentation. This
+fixes an issue where these flags from the server could have been invalid
+for the following message. In some cases, this could have resulted in
+triggering the wpabuf security check that would terminate the process
+due to invalid buffer allocation.
+
+Signed-off-by: Jouni Malinen <address@hidden>
+---
+ src/eap_peer/eap_pwd.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/eap_peer/eap_pwd.c b/src/eap_peer/eap_pwd.c
+index 1d2079b..e58b13a 100644
+--- a/src/eap_peer/eap_pwd.c
++++ b/src/eap_peer/eap_pwd.c
+@@ -968,6 +968,7 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct
eap_method_ret *ret,
+ /*
+ * we have output! Do we need to fragment it?
+ */
++ lm_exch = EAP_PWD_GET_EXCHANGE(lm_exch);
+ len = wpabuf_len(data->outbuf);
+ if ((len + EAP_PWD_HDR_SIZE) > data->mtu) {
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PWD, data->mtu,
+--
+1.9.1
+