Jouni Malinen [Mon, 25 Feb 2019 19:58:28 +0000 (21:58 +0200)]
tests: More robust connect command testing
Avoid an invalid failure case due to scan results being left behind from
connect_cmd_bssid_hint when executing connect_cmd_reject_assoc by
explicitly clearing the scan results from dev5. This fixes an error case
that happened with the following test case sequence:
connect_cmd_bssid_hint connect_cmd_reject_assoc
Jouni Malinen [Mon, 25 Feb 2019 19:40:23 +0000 (21:40 +0200)]
tests: Make MACsec test cases clear monitor socket more thoroughly
The wpas (dev5) control interface socket did not always get cleared in
the MACsec test cases and this could result in issues with following
test cases if the dev5 message queue hit the maximum limit.
Lubomir Rintel [Tue, 19 Feb 2019 13:44:15 +0000 (14:44 +0100)]
defconfig: Enable RSN on IBSS networks (wpa_supplicant)
Fedora and Debian enable this. NetworkManager actually rejects such
configurations citing kernel bugs, but that actually might not be the
right thing to do anymore.
Jouni Malinen [Mon, 25 Feb 2019 17:29:02 +0000 (19:29 +0200)]
defconfig: Remove obsolete notes about OpenSSL requirements for EAP-FAST
OpenSSL 0.9.8 reached its end-of-life long time ago, so remove these old
notes about need of a newer OpenSSL version for EAP-FAST since all
current OpenSSL versions include the needed functionality.
Lubomir Rintel [Tue, 19 Feb 2019 13:44:14 +0000 (14:44 +0100)]
defconfig: Enable a handful of EAP methods (wpa_supplicant)
Fedora uses AKA, FAST, GPSK_SHA256, GPSK, IKEV2, PAX, SAKE and TNC. I
don't know why these in particular. AKA wouldn't work, because
CONFIG_PCSC is off anyways; let's enable all the other ones, and also
PWD (openSUSE enabled it because users demanded it).
Debian enables all of the above uses, but also PWD, AKA_PRIME, SIM, PSK
and EKE.
Jouni Malinen [Sat, 23 Feb 2019 16:54:54 +0000 (18:54 +0200)]
Fix a regression from VLAN assignment using WPA/WPA2 passphrase/PSK
This extension of VLAN assignment code had a bug in one of the code
paths where vlan_id could have been left uninitialized. This could
result in SAE authentication getting rejected in cases where VLAN
assignment is not used if the uninitialized stack memory had nonzero
value.
Fixes: dbfa691df4dc ("VLAN assignment based on used WPA/WPA2 passphrase/PSK") Signed-off-by: Jouni Malinen <j@w1.fi>
Jouni Malinen [Sat, 23 Feb 2019 15:57:23 +0000 (17:57 +0200)]
Avoid compiler warning about potentially unaligned pointer value
(&mgmt->u.deauth.reason_code + 1) is not exactly clean and now that we
have the u8 variable[] member in the struct after this field, use that
directly to avoid clang compiler warning:
ctrl_iface_ap.c:454:18: error: taking address of packed member
'reason_code' of class or structure 'ieee80211_mgmt::(anonymous
union)::(anonymous)' may result in an unaligned pointer value
[-Werror,-Waddress-of-packed-member]
Jouni Malinen [Sat, 23 Feb 2019 15:39:38 +0000 (17:39 +0200)]
UBSan: Define FST LLT macros without integer overflow
FST_MAX_LLT_MS definition depended on undefined behavior with unsigned
integer overflow. Avoid that and also optimize the
FST_LLT_{MS_TO_VAL,VAL_TO_MS} macros to handle larger values without
overflowing 32-bit unsigned integers.
fst_session.c:1274:52: runtime error: unsigned integer overflow: 4294967295 * 32 cannot be represented in type 'unsigned int'
Jouni Malinen [Sat, 23 Feb 2019 14:24:19 +0000 (16:24 +0200)]
UBSan: Avoid NULL pointer dereferences on an error path
hapd->conf might be NULL in case initialized failed, so better be
prepared for that when debug printing interface name in the deinit path.
hostapd.c:312:54: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
hostapd.c:351:29: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
hostapd.c:2158:18: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
Jouni Malinen [Sat, 23 Feb 2019 14:03:47 +0000 (16:03 +0200)]
UBSan: Avoid unsigned integer overflow in utf8_{,un}escape()
Split the if/while loop condition into two independent steps so that
in_size-- happens only in the case in_size is nonzero. This gets rid of
unnecessary UBSan warnings.
common.c:1087:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
common.c:1076:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
common.c:1119:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
Jouni Malinen [Sat, 23 Feb 2019 12:03:59 +0000 (14:03 +0200)]
UBSan: Avoid unnecessary warning
elems->mic might be NULL here, so do not try to decrement it by 2 even
if the result is not used anywhere due to a latter check for elems->mic
being NULL.
mesh_rsn.c:646:20: runtime error: pointer index expression with base 0x000000000000 overflowed to 0xfffffffffffffffe
Jouni Malinen [Sat, 23 Feb 2019 11:57:51 +0000 (13:57 +0200)]
UBSan: Avoid an unsigned integer overflow warning
ext_supp_rates_len would be 0 here, so decrementing it by 2 will result
in unsigned integer overflow even if that result is not actually used
anywhere. Avoid that to get rid of the UBSan warning.
tdls.c:1597:27: runtime error: unsigned integer overflow: 0 - 2 cannot be represented in type 'unsigned long'
Jouni Malinen [Sat, 23 Feb 2019 11:54:33 +0000 (13:54 +0200)]
UBSan: Pack MACsec peer id structure
This is needed to avoid an UBSan warning and since this struct is used
as part of a message construction, it needs to be packed anyway to
guarantee correct functionality.
ieee802_1x_kay.c:1021:3: runtime error: member access within misaligned address 0x0000031921e2 for type 'struct ieee802_1x_mka_peer_id', which requires 4 byte alignment
Jouni Malinen [Sat, 23 Feb 2019 11:44:20 +0000 (13:44 +0200)]
UBSan: Use typecast to avoid unsigned integer overflow
iface->num_bss is unsigned integer, so need to explicit typecast it to
unsigned before decrementation by one even when the result is stored in
an unsigned integer.
../src/ap/hostapd.c:2185:26: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned long'
Jouni Malinen [Sat, 23 Feb 2019 10:59:10 +0000 (12:59 +0200)]
UBSan: Fix RRM beacon processing attempt without scan_info
Some driver interfaces (e.g., wext) might not include the
data->scan_info information and data could be NULL here. Do not try to
call the RRM handler in this case since that would dereference the NULL
pointer when determining where scan_info is located and could
potentially result in trying to read from unexpected location if RRM is
enabled with a driver interface that does not support it.
events.c:1907:59: runtime error: member access within null pointer of type 'union wpa_event_data'
Jouni Malinen [Sat, 23 Feb 2019 10:49:17 +0000 (12:49 +0200)]
UBSan: Avoid size_t variable overflow in control interface
The loop "if (i-- == 0) break" style construction works in practice fine
since the check against 0 is done before decrementation. However, this
hits an UBSan warning, so split that decrementation to happen as a
separate step after the check and break from the loop.
ctrl_iface.c:5086:9: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
Jouni Malinen [Sat, 23 Feb 2019 10:42:20 +0000 (12:42 +0200)]
UBSan: Avoid unsigned integer overflow is throughput estimation
wpa_scan_result_compar() would return wb->est_throughput -
wa->est_throughput in case the comparison is done based on the
throughput estimates. While the return value from this function is a
signed integer, these est_throughput values are unsigned integers and
need to be explicitly typecast to avoid an UBSan warning.
scan.c:1996:30: runtime error: unsigned integer overflow: 54000 - 135000 cannot be represented in type 'unsigned int'
Jouni Malinen [Sat, 23 Feb 2019 10:07:21 +0000 (12:07 +0200)]
Modify dl_list_for_each() to not use unaligned access with WPA_TRACE
UBSan testing with WPA_TRACE=y ended up hitting an unaligned access for
struct os_alloc_trace in os_program_deinit() because of the
dl_list_for_each() design that looked like dereferencing the member
element of the list head which is something that does not exist.
Get the first entry from the list using dl_list_first() so that the
empty list special case is covefred and compare item pointers instead of
struct dl_list pointers to check whether the end of the loop has been
reached.
Lior David [Wed, 6 Feb 2019 10:33:35 +0000 (12:33 +0200)]
Fix cipher suite selector default value in RSNE for DMG
According to IEEE Std 802.11-2016, 9.4.2.25 when fields of an RSNE are
not included, the default values are used. The cipher suite defaults
were hardcoded to CCMP in the previous implementation, but the default
is actually different for DMG: GCMP (per 9.4.2.25.2).
It is not possible to find out from the RSNE if the network is non-DMG
or DMG, so callers of wpa_parse_wpa_ie_rsn() need to handle this case
based on context, which can be different for each caller.
In order to fix this issue, add flags to the wpa_ie_data indicating
whether pairwise/group ciphers were included in the RSNE. Callers can
check these flags and fill in the appropriate ciphers. The
wpa_parse_wpa_ie_rsn() function still initializes the ciphers to CCMP by
default so existing callers will not break. This change also fixes some
callers which need to handle the DMG network case.
Add a vendor attribute for specifying ethernet protocol type
This new QCA vendor attribute adds provision to specify the
ethernet protocol id from userspace to the packets which are
offloaded to the driver/firmware (e.g., IPv4, IPv6).
Davina Lu [Tue, 12 Feb 2019 14:35:26 +0000 (15:35 +0100)]
hostapd: Support Multi-AP backhaul STA onboarding with WPS
The Wi-Fi Alliance Multi-AP Specification v1.0 allows onboarding of a
backhaul STA through WPS. To enable this, the WPS Registrar offers a
different set of credentials (backhaul credentials instead of fronthaul
credentials) when the Multi-AP subelement is present in the WFA vendor
extension element of the WSC M1 message.
Add new configuration options to specify the backhaul credentials for
the hostapd internal registrar: multi_ap_backhaul_ssid,
multi_ap_backhaul_wpa_psk, multi_ap_backhaul_wpa_passphrase. These are
only relevant for a fronthaul SSID, i.e., where multi_ap is set to 2 or
3. When these options are set, pass the backhaul credentials instead of
the normal credentials when the Multi-AP subelement is present.
Ignore the Multi-AP subelement if the backhaul config options are not
set. Note that for an SSID which is fronthaul and backhaul at the same
time (i.e., multi_ap == 3), this results in the correct credentials
being sent anyway.
The security to be used for the backaul BSS is fixed to WPA2PSK. The
Multi-AP Specification only allows Open and WPA2PSK networks to be
configured. Although not stated explicitly, the backhaul link is
intended to be always encrypted, hence WPA2PSK.
To build the credentials, the credential-building code is essentially
copied and simplified. Indeed, the backhaul credentials are always
WPA2PSK and never use per-device PSK. All the options set for the
fronthaul BSS WPS are simply ignored.
Signed-off-by: Davina Lu <ylu@quantenna.com> Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Cc: Marianna Carrera <marianna.carrera.so@quantenna.com>
Davina Lu [Tue, 12 Feb 2019 14:35:25 +0000 (15:35 +0100)]
wpa_supplicant: Support Multi-AP backhaul STA onboarding with WPS
The Wi-Fi Alliance Multi-AP Specification v1.0 allows onboarding of a
backhaul STA through WPS. To enable this, the backhaul STA needs to add
a Multi-AP IE to the WFA vendor extension element in the WSC M1 message
that indicates it supports the Multi-AP backhaul STA role. The Registrar
(if it support Multi-AP onboarding) will respond to that with a WSC M8
message that also contains the Multi-AP IE, and that contains the
credentials for the backhaul SSID (which may be different from the SSID
on which WPS is performed).
Introduce a new parameter to wpas_wps_start_pbc() and allow it to be
set via control interface's new multi_ap=1 parameter of WPS_PBC call.
multi_ap_backhaul_sta is set to 1 in the automatically created SSID.
Thus, if the AP does not support Multi-AP, association will fail and
WPS will be terminated.
Only wps_pbc is supported.
This commit adds the multi_ap argument only to the control socket
interface, not to the D-Bus interface.
Since WPS associates with the fronthaul BSS instead of the backhaul BSS,
we should not drop association if the AP announces fronthaul-only BSS.
Still, we should only do that in the specific case of WPS. Therefore,
add a check to multi_ap_process_assoc_resp() to allow association with a
fronthaul-only BSS if and only if key_mgmt contains WPS.
Signed-off-by: Davina Lu <ylu@quantenna.com> Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Daniel Golle <daniel@makrotopia.org> Cc: Marianna Carrera <marianna.carrera.so@quantenna.com>
The Multi-AP specification adds a new subelement to the WFA extension
element in the WPS exchange. Add an additional parameter to
wps_build_wfa_ext() to add this subelement. The subelement is only added
if the parameter is nonzero. Note that we don't reuse the existing
MULTI_AP_SUB_ELEM_TYPE definition here, but rather define a new
WFA_ELEM_MULTI_AP, to make sure the enum of WFA subelement types for WPS
vendor extension remains complete.
For now, all callers set the multi_ap_subelem parameter to 0.
tests: Update multi_ap_fronthaul_on_ap to match implementation
Now that the backhaul STA Multi-AP association is not rejected anymore
by the AP, update the test case to expect disconnection to be triggered
by the STA.
Multi-AP: Don't reject backhaul STA on fronthaul BSS
The Multi-AP specification only specifies that information elements have
to be added to the Association Request and Association Response frame;
it doesn't specify anything about what should be done in case they are
missing. Previously, we rejected non-backhaul associations on a
backhaul-only BSS, and non-fronthaul associations on a fronthaul-only
BSS.
However, this makes WPS fail when fronthaul and backhaul are separate
SSIDs. Indeed, WPS for the backhaul link is performed on the *fronthaul*
SSID. Thus, the Association Request frmae used for WPS *will* contain
the Multi-AP IE indicating a backhaul STA. Rejecting that association
makes WPS fail.
Therefore, accept a multi-AP backhaul STA Association Request frame on a
fronthaul-only BSS. Still issue a warning about it, but only at level
DEBUG intead of INFO. Also change the condition checking to make it
clearer.
While we're at it, also fix the handling of unexpected bits in the
Multi-AP IE. 4 bits are reserved in the specification, so these
certainly have to be ignored. The specification also doesn't say that
setting one of the other bits is not allowed. Therefore, only report
unexpected values in the Multi-AP IE, don't reject because of it. Note
that a malformed IE (containing more than one byte) still triggers a
rejection.
HS 2.0: Make hs20-osu-client SP and <FQDN> directories group writable
This updates SP/<FQDN> directory with following permissions on Android
to allow moving certificate at runtime from Cert/ to SP/<FQDN> folder:
- user:read/write/exec
- group:read/write/exec
(i.e., add group write permission)
Jouni Malinen [Mon, 18 Feb 2019 16:46:40 +0000 (18:46 +0200)]
mesh: More consistent checking of wpa_s->ifmsh in completion handler
It does not look like wpa_s->ifmsg could be NULL here, but better be
more consistent anyway to keep static analyzers happier by avoiding
dereference of wpa_s->ifmsh in the function before the NULL check for
it.
Jouni Malinen [Mon, 18 Feb 2019 16:24:52 +0000 (18:24 +0200)]
Fix wpa_psk_file parser error case handling
str_token() can return NULL for the name if the remaining token contains
only the delimiter. Fix this to avoid NULL pointer dereference with a
corner case of an invalid value used in the configuration.
Fixes: ec5c39a5574d ("AP: Allow identifying which passphrase station used with wpa_psk_file") Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Jouni Malinen [Mon, 18 Feb 2019 16:19:06 +0000 (18:19 +0200)]
tests: Mark log files to use utf-8 encoding
This seems to be needed when using python3 in VM for the ssid_utf8 test
case debug prints from the control interface requests. This breaks
python2 support for the same logging entries, but there does not seem to
be any easy way of addressing this in a manner that works for both
python versions, so move ahead with the python3-only support from now
on.
Jouni Malinen [Sun, 17 Feb 2019 15:22:37 +0000 (17:22 +0200)]
SAE: VLAN assignment based on SAE Password Identifier
The new sae_password parameter [|vlanid=<VLAN ID>] can now be used to
assign stations to a specific VLAN based on which SAE Password
Identifier they use. This is similar to the WPA2-Enterprise case where
the RADIUS server can assign stations to different VLANs and the
WPA2-Personal case where vlanid parameter in wpa_psk_file is used.
Jouni Malinen [Sun, 17 Feb 2019 14:55:50 +0000 (16:55 +0200)]
tests: Force diff chan in p2ps_channel_active_go_and_station_different_mcc
This test case was failing pretty frequently due to an issue in being
able to send out the Provision Discovery Response frame on the operating
channel. Now that wpa_supplicant has a fix for that issue, modify this
test case to hit this error condition every time. In addition, make sure
the possible exception from p2ps_exact_seek() does not get hidden with a
failing remove_group() call in the finally section.
Jouni Malinen [Sun, 17 Feb 2019 14:53:03 +0000 (16:53 +0200)]
P2P: Stop listen state if Action frame TX is needed on another channel
This speeds up P2P responses to frames received on an operating channel
in case there is an ongoing P2P listen operation on another channel.
This is applicable to drivers that support multiple channels in
concurrently.
This addresses an issue showing up in the
p2ps_channel_active_go_and_station_different_mcc test case where the
Provision Discovery Request frame can be received on the operating
channel of a group instead of the Listen channel. The response was
delayed until the listen operation timed out and this took too long time
for the peer to receive the response.
Jouni Malinen [Thu, 14 Feb 2019 20:24:16 +0000 (22:24 +0200)]
Indicate wifi_generation in wpa_supplicant STATUS output
This adds a wifi_generation=4/5/6 line to the STATUS output if the
driver reports (Re)Association Request frame and (Re)Association
Response frame information elements in the association or connection
event. Only the generations 4 (HT = 802.11n), 5 (VHT = 802.11ac), and 6
(HE = 802.11ax) are reported.
Jouni Malinen [Thu, 14 Feb 2019 20:01:20 +0000 (22:01 +0200)]
nl80211: (Re)Association Request frame IEs from association event
Process NL80211_ATTR_REQ_IE from the NL80211_CMD_ASSOCIATE event to
allow request IEs to be made available for the SME-in-wpa_supplicant
case similarly to how this is done with SME-in-driver with
NL80211_CMD_CONNECT.
Jouni Malinen [Fri, 15 Feb 2019 00:06:46 +0000 (02:06 +0200)]
tests: ap_wpa_ie_parsing to allow EAPOL-Key msg 2/4 rejection
Once mac80211 starts reporting the used Association Request frame IEs in
the association event, wpa_supplicant will update RSN supplicant IE
information based on that and that will make the AP reject EAPOL-Key msg
2/4 in this particular test scenario due to the hack of including two
RSN IEs in the Association Request frame. Accept this sequence as a
valid test execution in addition to the previously expected connection
to avoid reporting incorrect failures.
Jouni Malinen [Thu, 14 Feb 2019 11:34:33 +0000 (13:34 +0200)]
VLAN assignment based on used WPA/WPA2 passphrase/PSK
Extend wpa_psk_file to allow an optional VLAN ID to be specified with
"vlanid=<VLAN ID>" prefix on the line. If VLAN ID is specified and the
particular wpa_psk_file entry is used for a station, that station is
bound to the specified VLAN. This can be used to operate a single
WPA2-Personal BSS with multiple VLANs based on the used passphrase/PSK.
This is similar to the WPA2-Enterprise case where the RADIUS server can
assign stations to different VLANs.
Jouni Malinen [Thu, 14 Feb 2019 10:09:09 +0000 (12:09 +0200)]
HS 2.0 server: Add X-WFA-Hotspot20-Filtering header line to T&C
When filtering is successfully disabled at the end of the terms and
conditions acceptance sequence, add the "X-WFA-Hotspot20-Filtering:
remove" header line to the HTTP response.
Jouni Malinen [Mon, 11 Feb 2019 23:16:13 +0000 (01:16 +0200)]
HE: Fix set_he_cap() parsing of config options for MU EDCA Params
When I replaced the POS() function with ffs() when applying relevant
parts from the original patch, this ended up breaking the frame
construction since the POS() function was supposed to count the bit
offset for the mask with 0 being the LSB instead of 1 returned by ffs().
Furthermore, ffs() is not available in all C libraries (e.g., not
directly exposed by strings.h on Android), so better not depend on that
or compiler builtins for this since there is no need for this to be as
fast as possible in configuration parsing.
Fix this with a simple function to determine the number of bits the
value needs to be shifted left to align with the mask.
Fixes: 11ce7a1bc3e2 ("HE: Add MU EDCA Parameter Set element (AP)") Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Jouni Malinen [Mon, 11 Feb 2019 15:37:08 +0000 (17:37 +0200)]
Do not disassociate not-associated STA on timeout
If the ap_handle_timer() timeout is reached for a not-associated STA, do
not default to disassociating that STA first since Disassociation frame
is not really appropriate to send to a STA that is not in associated
state. Instead, skip directly to deauthentication and STA entry removal.
Johannes Berg [Fri, 8 Feb 2019 16:57:48 +0000 (17:57 +0100)]
common: Add strongly typed element iteration macros
Rather than always iterating elements from frames with pure
u8 pointers, add a type "struct element" that encapsulates
the id/datalen/data format of them.
Then, add the element iteration macros
* for_each_element
* for_each_element_id
* for_each_element_extid
which take, as their first 'argument', such a structure and
iterate through a given u8 array interpreting it as elements.
While at it also add
* for_each_subelement
* for_each_subelement_id
* for_each_subelement_extid
which instead of taking data/length just take an outer element
and use its data/datalen.
Also add for_each_element_completed() to determine if any of
the loops above completed, i.e., it was able to parse all of
the elements successfully and no data remained.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jouni Malinen [Sun, 10 Feb 2019 15:55:42 +0000 (17:55 +0200)]
tests: Fix wnm-fuzzer by adding dummy configuration
Some of the WNM implementation expects configuration to be available
(e.g., ieee802_!1_rx_wnm_coloc_intf_req() dereferences wpa_s->conf), so
add a dummy configuration to allow the fuzzer tool to be used.
Jouni Malinen [Sun, 10 Feb 2019 15:02:49 +0000 (17:02 +0200)]
tests: EAPOL-Key fuzzing tool
Add test-eapol program that can be used for fuzzing the EAPOL-Key
Supplicant and Authenticator implementations. This tool can write
Supplicant or Authenticator messages into a file as an initialization
step and for the fuzzing step, that file (with potential modifications)
can be used to replace the internally generated message contents.
The TEST_FUZZ=y build parameter is used to make a special build where a
hardcoded random number generator and hardcoded timestamp are used to
force deterministic behavior for the EAPOL-Key operations. This will
also make the implementation ignore Key MIC and AES keywrap errors to
allow processing of modified messages to continue further.
Jouni Malinen [Sun, 10 Feb 2019 11:41:10 +0000 (13:41 +0200)]
RSN: Do not start preauthentication timer without candidates
There is no need to schedule the postponed RSN preauthentication start
if there are no candidates. Avoid wasting eloop resources for this.
This is most useful for fuzz testing of the 4-way handshake
implementation to avoid getting stuck waiting for this unnecessary one
second time when using eloop to coordinate the Authenticator and
Supplicant state machines.
Jouni Malinen [Sat, 9 Feb 2019 23:51:51 +0000 (01:51 +0200)]
TLS: Fix X.509 certificate name conversion into empty string
If none of the supported name attributes are present, the name string
was nul terminated only at the end. Add an explicit nul termination at
the end of the last written (or beginning of the buffer, if nothing is
written) to avoid writing uninitialized data to debug log.
Jouni Malinen [Sat, 9 Feb 2019 23:34:24 +0000 (01:34 +0200)]
TLS: Fix ASN.1 parsing with no room for the header
Explicitly check the remaining buffer length before trying to read the
ASN.1 header values. Attempt to parse an ASN.1 header when there was not
enough buffer room for it would have started by reading one or two
octets beyond the end of the buffer before reporting invalid data at the
following explicit check for buffer room.
Jouni Malinen [Sat, 9 Feb 2019 23:08:07 +0000 (01:08 +0200)]
TLS: Fix AlertDescription for missing partial processing case
tlsv1_record_receive() did not return error here and as such, &alert was
not set and must not be used. Report internal error instead to avoid use
of uninitialized memory.
Jouni Malinen [Sat, 9 Feb 2019 19:07:24 +0000 (21:07 +0200)]
tests: TLS fuzzing tool
Add test-tls program that can be used for fuzzing the internal TLS
client and server implementations. This tool can write client or server
messages into a file as an initialization step and for the fuzzing step,
that file (with potential modifications) can be used to replace the
internally generated message contents.
The TEST_FUZZ=y build parameter is used to make a special build where a
hardcoded random number generator and hardcoded timestamp are used to
force deterministic behavior for the TLS operations.
projects / thirdparty / hostap.git / log
