Greg Hudson [Tue, 11 Aug 2015 15:32:56 +0000 (11:32 -0400)]
Fix new doxygen parameter lists
Use [out] instead of [in] for the output parameters of
krb5_c_prfplus() and krb5_c_derive_prfplus(). Also use "out" instead
of "output" for krb5_c_derive_prfplus() to match the parameter name in
the definition.
To simplify callers, make restart_init_creds_loop() reset the
err_reply and err_padata fields and free per-request preauth moddata.
Change its padata argument to a boolean argument for FAST upgrades,
instead of sometimes passing in ctx->err_padata (which would become
invalid partway through the function now that we're freeing it).
Split up the upgrade-to-FAST and downgrade-to-no-padata cases in
init_creds_step_reply(), and eliminate negotiation_requests_restart().
For brevity, rename the krb5_init_creds_context have_restarted field
to restarted. Rename krb5int_upgrade_to_fast_p() to
k5_upgrade_to_fast_p() and make it a true predicate. Change some flag
field assignments to use TRUE/FALSE instead of 1/0. Reset
enc_pa_rep_permitted after a client realm referral, since we don't
know that the new realm's KDCs will fail on informational padata.
Add the GSS_C_MA_NOT_DFLT_MECH attribute to IAKERB, and filter out
mechs with that attribute from the SPNEGO and gss_acquire_cred()
default mechanisms.
Add a -iakerb option to gss-server and pass it when performing IAKERB
tests. Also add tests using the wrong password, to verify that
gss_acquire_cred_with_password() fails with the wrong password when
using SPNEGO.
gss_inquire_attrs_for_mech() should not add GSS_C_MA_NOT_DFLT_MECH to
mechs which aren't the default. The attribute means "MUST NOT be used
as a default mechanism" (RFC 5587) and is intended to be used by the
mechglue. It does not mean "is not the default mech".
Define HAVE_VSNPRINTF for VS2015 or newer. Avoid putting constants
directly after string literals without whitespace, or the VS2015
compiler thinks it's a string suffix. Prefix the OVERFLOW identifier
in x-deltat.y (along with NUM and LONGNUM for consistency) to avoid a
conflict with math.h. Regenerate deltat.c.
[ghudson@mit.edu: squashed three commits and condensed commit
messages; avoid creating long lines]
This commit permits the external use of the RFC 6113 PRF+ function.
It also adds a function to derive a key from an input key and string
using PRF+.
[ghudson@mit.edu: adjust style; avoid new C99isms; use string2data(),
empty_data(), and alloc_data() where appropriate; add some explanatory
comments; edit docstrings and commit message]
Greg Hudson [Mon, 3 Aug 2015 15:44:58 +0000 (11:44 -0400)]
Support OTP auth indicators in string attribute
To better support integration with FreeIPA, allow authentication
indicators to be specified in the "otp" string attribute, overriding
any indicators in the token type.
Before this patch, libkrad would follow the same exact logic for all
socket types when the retries parameter was non-zero. This meant that
when connecting with SOCK_STREAM, multiple requests were sent in case
of packet drops, which, of course, cannot happen for SOCK_STREAM.
Instead, just disable retries for SOCK_STREAM sockets.
Simo Sorce [Tue, 4 Aug 2015 18:04:14 +0000 (14:04 -0400)]
Allow missing authenticator checksum with GSSAPI
Some SMB client implementations omit the authenticator checksum. To
interoperate with these clients, a server needs to allow missing
checksums and assume no flags are requested. This is being documented
in MS-KILE as well, as Microsoft does the same.
[ghudson@mit.edu: edited and reformatted comment; edited commit
message summary]
If we encounter any errors during krb5_cccol_have_content(), preserve
the message for the first one and wrap it. If we do not encounter any
errors, report the default ccache name. Based on a patch from Nico
Williams.
Release any previous value of ctx->err_padata before setting it in
init_creds_step_reply(). It could have a prior value after a realm
referral or retriable error.
Since ticket #7665, explicitly registered kdcpreauth modules have
appeared before built-in modules (disregarding the static preauth
systems, which are all informational). Therefore, the test preauth
module can be used without disabling encrypted timestamp. Remove an
erroneous comment in kdctest.c and simplify test scripts which use the
test preauth module.
Greg Hudson [Mon, 23 Mar 2015 17:03:32 +0000 (13:03 -0400)]
Document authentication indicators
Add a new file auth_indicator.rst to the admin guide. Also document
the pkinit_indicator and OTP indicator profile variables, the
require_auth string attribute, and the add_auth_indicator kdcpreauth
callback. Add references to the new public constants in
appdev/refs/macros/index.rst.
Greg Hudson [Mon, 23 Mar 2015 16:20:15 +0000 (12:20 -0400)]
Add indicator support to PKINIT
Read a "pkinit_indicator" profile variable for PKINIT realm
configuration and assert its values as indicators when PKINIT is used
to authenticate. Add a test case in t_pkinit.py for this feature.
Greg Hudson [Thu, 8 Jan 2015 20:56:37 +0000 (15:56 -0500)]
Add indicator support to OTP
Read an "indicator" profile variable for OTP token types and assert
its values as indicators when that token type is used to authenticate.
Add a test case in t_otp.py for this feature.
Greg Hudson [Sun, 15 Mar 2015 19:56:34 +0000 (15:56 -0400)]
Test auth indicator functionality
Modify adata.c to handle CAMMAC containers and display auth
indicators. Modify the test preauth module to transmit a list of
indicators (specified by a gic opt) from the clpreauth module to the
kdcpreauth module and assert them to the KDC. Add a new s4u2proxy
test harness in src/tests which can be used to exercise S4U2Proxy
without going through GSSAPI, using a second ccache containing an
existing evidence ticket.
Add tests to t_authdata.py to exercise a variety of ticket issuing
scenarios and verify that the correct auth indicators appear in each
ticket.
Greg Hudson [Wed, 28 Jan 2015 22:10:36 +0000 (17:10 -0500)]
Enforce auth indicator restrictions in KDC
If the string attribute "require_auth" is set on a the server
principal of an AS or TGS request, deny the request unless one of the
named indicators is present was asserted for the client's initial
authentication.
Greg Hudson [Sun, 18 Jan 2015 19:46:11 +0000 (14:46 -0500)]
Add authentication indicators in AS-REQs
Add an auth_indicators parameter to handle_authdata(). In
finish_process_as_req(), supply the auth indicators asserted by
preauth modules. In handle_authdata(), wrap any supplied auth
indicators in CAMMAC and IF-RELEVANT containers and include them in
the ticket.
Greg Hudson [Mon, 22 Dec 2014 17:44:08 +0000 (12:44 -0500)]
Add kdcpreauth callback for auth indicators
Add a new kdcpreauth callback add_auth_indicator, which adds an
authentication indicator string. This commit doesn't do anything with
the asserted authentication indicators; they are tracked in the
auth_indicators field of struct as_req_state to be used later.
Greg Hudson [Fri, 19 Dec 2014 17:19:23 +0000 (12:19 -0500)]
Add ASN.1 encoder/decoder for UTF-8 strings
Add functions to encode and decode SEQUENCE OF UTF8String into a
null-terminated array of krb5_data pointers. This type is simple
enough that we don't need specific tests for it.
Ticket #7223 added new policy fields and a new dump format version to
marshal them, but did not add a new iprop dump format version. As a
result, slave KDCs running 1.11 or later cannot receive full resyncs
from master KDCs running 1.10 or earlier. (Reported by John
Devitofranceschi.)
Retroactively add support for pre-1.11 policy entries by making
process_r1_11_policy() read the first ten fields, check whether the
next whitespace character is a newline, and then read the rest if it
is not.
Filter out mechs with the GSS_C_MA_DEPRECATED attribute from the set
of mechanisms obtained by SPNEGO, and from the set used when
gss_acquire_cred() is called with no desired_mechs attribute.
SPNEGO acceptors will still accept the old and wrong krb5 OIDs, but
SPNEGO initiators will not offer them. According to [MS-SPNG], only
Windows 2000 does not recognize the standard krb5 OID, and it is
client-only.
In gss-client.c, use the standard krb5 OID for the -krb5 option, as
acceptors who call gss_acquire_cred() with no desired_mechs to create
an acceptor cred will no longer accept the old or wrong krb5 OIDs.
t_spnego.c contains a test for properly reflecting the erroneous
Microsoft krb5 OID. Currently this test produces its input token by
acquiring a SPNEGO cred and using gss_set_neg_mechs() to offer only
the wrong krb5 OID. This method will not work when SPNEGO is changed
not to acquire multiple krb5 creds in the next commit, so rewrite it
to manually produce the SPNEGO initiator token.
kadmind should be quiet in nofork mode after it prints the
"starting..." sentinel line, or it can fill the pipe buffer when run
from k5test.py. Since there is currently no run-time debuf flag,
conditionalize the DPRINT macro in ipropd_svc.c on DEBUG at compile
time.
Tom Yu [Mon, 13 Jul 2015 22:05:35 +0000 (18:05 -0400)]
Fix princflags memory management
Fix some out of memory error cases (found by Coverity) that could
cause multiple frees or freeing of invalid pointers. In
krb5_flagnum_to_string(), don't assume that asprintf() stores a null
pointer on failure (it does in BSD but not in glibc). In
krb5_flags_to_strings(), free the correct pointer in the cleanup loop
in on error.
Roland Mainz [Tue, 21 Oct 2014 16:06:42 +0000 (12:06 -0400)]
Add support for directories in profile paths
If a profile path component is a directory, process files in the
directory as we would for an "includedir" directive.
[ghudson@mit.edu: don't change default profile path; simplify
profile_process_directory using prior commit; only check stat bits,
not final character of pathname; misc style changes; commit message]
Greg Hudson [Thu, 23 Oct 2014 21:07:36 +0000 (17:07 -0400)]
Simplify prof_parse.c include support
We do not need to pass the whole parser state to parse_include_file
and parse_include_dir, only the root section. Also constify the
filename and dirname parameters.
Greg Hudson [Fri, 24 Oct 2014 20:56:47 +0000 (16:56 -0400)]
Add ASN.1 encoder and decoder for CAMMAC
Add internal type declarations for krb5_verifier_mac and krb5_cammac.
Add ASN.1 encoder and decoder functions and an internal free function
for krb5_cammac. Add ASN.1 tests for krb5_cammac as well as asn1c
test vectors for Verifier and AD-CAMMAC.
In kdc_preauth.c, commit be20a5f5cee8d6c4072d1b81712520dbf9f6eefd made
load_preauth_plugins() handle negative preauth type numbers.
get_plugin_vtables() also needs to handle negative preauth type
numbers, or it can return the wrong count and load_preauth_plugins()
can overflow the table.
Tom Yu [Thu, 2 Jul 2015 20:16:07 +0000 (16:16 -0400)]
Unify KDB principal flag conversion functions
These changes unify the KDB principal flag specifiers used by kadmin,
kdc.conf default_principal_flags, and kadm5.acl. Each of those
interfaces will now accept any of the historically accepted input
forms of any of those interfaces. Additionally, accept flag
specifiers in the forms that kadmin prints, as well as hexadecimal
numbers.
Replace krb5_string_to_flags() with krb5_flagspec_to_mask(). The
latter has a pseudo-ternary output, allowing different pointers for
flags to set versus flags to clear. Additional functionality includes
parsing hexadecimal numbers for flag settings.
Remove krb5_input_flag_to_string(), which nothing in the tree used,
and probably hasn't ever worked properly due to long-standing gaps in
the flag number sequence.
Remove krb5_flags_to_string(), which nothing in the tree used.
Verbose flag output can be added back through another interface if
there is demand.
Add krb5_flagnum_to_string(), which produces a string representation
of a flag number. Additional functionality includes output of
hexadecimal numbers for unknown flags.
Add krb5_flags_to_strings(), which produces an array of strings
describing the flags, using the output from krb5_flagnum_to_string().
Tom Yu [Wed, 1 Jul 2015 20:28:45 +0000 (16:28 -0400)]
Add test suite for KDB principal flags
Test kadmin.local reading of principal flag specifiers, kdc.conf
setting of default_principal_flags, and kadm5.acl restrictions. Only
really tests one flag at a time.
Also start requiring Python 2.5 for the test suite. It's been around
for long enough, and some syntax features such as conditional
expressions are useful.
ticket: 8215 (new)
subject: Unify KDB principal flag specifiers
target_version: 1.14
Greg Hudson [Sun, 15 Mar 2015 19:56:34 +0000 (15:56 -0400)]
Test client_keyblock kdcpreauth callback
Add internal clpreauth and kdcpreauth modules named "test" which can
exercise the client_keyblock callback (as well as get_string and
get_as_key on the client side). Add tests to t_etype_info.py to
verify that the callback matches the etype info sent by the KDC.
In the KDC's load_preauth_plugins(), correct a test for the end of
pa_type_list so that we can use a negative preauth type number for the
test module. (RFC 4120 reserves negative preauth type values for
unregistered use.)
Greg Hudson [Thu, 4 Jun 2015 18:08:06 +0000 (14:08 -0400)]
Add client_keyblock kdcpreauth callback
Add a new kdcpreauth callback which gets the selected client key.
This callback can be used by preauth mechs which need to use the
singular reply key in a challenge sent by the KDC, now that we send
only one etype-info entry in PREAUTH_REQUIRED errors.
Greg Hudson [Sat, 6 Jun 2015 01:19:15 +0000 (21:19 -0400)]
Add tests for KDC etype-info behavior
Create a new test harness etinfo.c which can display etype-info2
information in KDC responses. Use it to test the etype-info results
in preauth_required error e-data and AS-REP padata.
Greg Hudson [Sat, 6 Jun 2015 19:45:39 +0000 (15:45 -0400)]
Only include one key in etype-info
As described in RFC 6113 section 2.1, the KDC can choose a single
long-term key at the beginning of the preauth conversation based on
the request enctype list. Implement this change for the PA-ETYPE-INFO
and PA-ETYPE-INFO2 padata included in preauth hint lists, by selecting
the client key before checking padata, making the client keyblock
available in the preauth rock, and unifying the etype-info handlers to
use a single helper function for edata and AS-REP padata.
crypto_retrieve_cert_sans() is allowed to set its princs output to
NULL, although the OpenSSL implementation rarely does. Fix the
TRACE_PKINIT_CLIENT_SAN_KDCCERT_PRINC for loop to allow this like other
parts of the function do, and also get rid of the unnecessary princptr
variable by using an integer index like other parts of the function.
Bump the minor version of the kadm5_hook interface to 2 and add a
rename method. Invoke the rename method in kadm5_rename_principal()
like we do for other libkadm5srv operations.
Use memory cache in gss_acquire_cred_with_password
gss_acquire_cred_with_password() was originally introduced in Solaris.
When we introduced it in 1.9, we unfortunately gave it different and
less useful semantics. Restore this function to the Solaris
semantics, which are to always get credentials and store them in a
private memory ccache. The caller can use gss_store_cred() to make
the resulting creds visible to other processes if desired.
Tom Yu [Thu, 25 Jun 2015 23:31:53 +0000 (19:31 -0400)]
Deindent krb5_string_to_keysalts
Remove a level of indentation for the list-appending part of the
krb5_string_to_keysalts() loop body by consolidating the strtok_r()
calls into the controlling expreession of the loop.
In the SPNEGO mechanism, if we see the GSS_KRB5_CRED_NO_CI_FLAGS_X
option, do not explicitly ask for integrity flag from underlying
mechanisms. Adjust t_ciflags.c to match the new behavior, and add a
SPNEGO test using a normal initiator cred.
[ghudson@mit.edu: adjust style; fix tests here instead of in a
subsequent commit; clarify commit message]
Use a helper function to allocate SPNEGO cred handles, to make sure
that all members of the cred structure are zeroed or initialized.
[ghudson@mit.edu: avoid gss_ prefix on helper function and give it a
name similar to create_spnego_ctx(); unbrace some single-line if
bodies; clarify commit message]
Solly Ross [Mon, 8 Jun 2015 18:06:18 +0000 (14:06 -0400)]
Allow gss_inquire_context on partial krb5 contexts
RFC 2743 states that gss_inquire_context() must always return flags,
locally_initiated, and open even if a context is not yet fully
established. Additionally, a partially established context may also
return mech_type.
Previously, the krb5 mech raised an error for inquire_context on
partially completed contexts. It now follows the rules layed out in
RFC 2743.
Add a new test program to verify that gss_inquire_context() works
correctly on both in-progress and established contexts.
[ghudson@mit.edu: minor style changes and commit message edits]
Ben Kaduk [Wed, 24 Jun 2015 17:34:32 +0000 (13:34 -0400)]
Make the Principal column wider by default
The current 100-pixel default is too small to fit most principal
names (particularly the realm). There is no reason why all the
columns must be the same width, so promote this one as needing
more space.
ticket: 8211 (new)
subject: Leash's column for principal name truncates most principals
queue: kfw
tags: pullup
target_version: 1.13.3
Ben Kaduk [Tue, 23 Jun 2015 14:38:19 +0000 (10:38 -0400)]
Make registry hostrealm module highest precedence
Testing reveals that there are a number of machines in the wild
which retain old krb5.ini files across domain configuration changes,
and it is difficult to determine which machines are potentially
affected by incorrect stale configuration data.
To enable domain administrators to easily ensure that the correct
default realm is set, allow the registry hostrealm module to take
precedence over the profile.
Note that the registry hostrealm module can still be disabled
in the hostrealm interface configuration statment in the
[plugins] section of the profile.
ticket: 8209 (new)
subject: stale krb5.ini files still cause default realm WIN.MIT.EDU
tags: pullup
target_version: 1.13.3
Ben Kaduk [Fri, 29 May 2015 18:46:58 +0000 (14:46 -0400)]
Stop using the WiX src attribute
The src attribute has been deprecated for a while in favor of
different (more descriptive) attributes for the different XML
elements involved.
For the File element, use the Source attribute.
For the Directory element, use the FileSource attribute.
For the Merge, Binary, and Text elements, use the SourceFile attribute.
This makes the installer build much quieter, with the warnings from
the light.exe invocation all fitting into the default history buffer.
Ben Kaduk [Wed, 27 May 2015 19:36:51 +0000 (15:36 -0400)]
Stop using the WiX Registry element
It is deprecated in favor of more specific XML elements such
as RegistryKey, RegistryValue, and RemoveRegistryKey, so as to
stop overloading a single element for what are fundamentally
different types and operations.
RegistryValue elements can be children of RegistryKey elements,
allowing the Key attribute to be inherited, or bare within the
containing Component. We do not take advantage of the inheritance
at this time, since that would be a more disruptive change.
WiX would prefer for us to not use the createAndRemoveOnUninstall
attribute of <RegistryKey>, in favor of ForceCreateOnInstall
and/or ForceRemoveOnUninstall, but that can wait for a follow-up
commit.
Some instances of <Registry> were commented-out and can simply be
removed.
Some of the <Registry> elements used to create keys were also
setting the KeyPath attribute, which is not permitted in the
<RegistryKey> element. According to
http://sourceforge.net/p/wix/bugs/3197/ , this should never have
been allowed, and non-value registry keys should not be used as
MSI KeyPaths. In all affected cases, there are child
RegistryValue elements that are suitable for use as KeyPath
elements instead.
Some of the <Registry> elements were present with a duplicate
element with different Id that added no new attributes; those
duplicate elements can safely be removed.
<RemoveRegistryKey> is used to replace <Registry> elements
with Action=removeKeyOnInstall.
Ben Kaduk [Mon, 22 Jun 2015 23:11:28 +0000 (19:11 -0400)]
Put focus on password field when principal is set
In the Leash "Get Ticket" window, under some user-customized
configurations, the principal field can be pre-populated. In this case,
it makes sense for the default focus to be on the password field,
since most users will only be using a single principal and should
go directly to typing their password.
The focus was already set to the password field in the case when
the principal was not modifiable (such as when the "Get Ticket" dialog
was opened by an application requesting a specific ticket).
Ben Kaduk [Fri, 22 May 2015 18:38:27 +0000 (14:38 -0400)]
Add leash column for the ccache name
Previously, it was fairly easy to set the default cache to MSLSA:,
which is not collection-enabled (as opposed to the normal default
of API:, which is), and the non-collection behavior proved confusing
to many users.
Ideally there would be an option to choose the output ccache in
the "Get Ticket" window, but that is more complicated to implement
than just a display of what cache a given ticket is in. This
extra display column should still help to alleviate user confusion.
Ben Kaduk [Fri, 22 May 2015 18:42:02 +0000 (14:42 -0400)]
Make ribbon home tab more pretty
In the absence of a label title for a given command group, the
text "MS Shell Dlg" was inserted, which is somewhat confusing to
the user. Give the ticket-maniuplation group a title consisting
of a space, which removes the confusing text from the display.
Microsoft implements GSS-SPNEGO, a non-standard SASL mechanism which
omits the usual wrap exchange after the GSS context is established.
As a result, it does not support authzids, does not negotiate a
maximum message size, and implicitly negotiates a security layer based
on the GSS flags asserted by the client. If the client asserts GSS
flags corresponding to a security layer the server can't support, the
server has no recourse except to reject the connection.
Implement Heimdal's GSS_KRB5_CRED_NO_CI_FLAGS_X cred option. When set
on an initiator cred, do not assert the confidentiality and integrity
flags in initiator tokens unless they were requested by the caller.
Our SPNEGO mechanism always requests integrity from the underlying
mechanism, which limits the utility of this option. That issue will
be addressed in the future; even if it isn't, Samba currently uses its
own SPNEGO implementation, so can benefit from the cred option in
krb5.
[ghudson@mit.edu: expand GSS_KRB5_CRED_NO_CI_FLAGS_X comment, edit
commit message, use a boolean cred field]
Greg Hudson [Mon, 15 Jun 2015 21:34:23 +0000 (17:34 -0400)]
Fix make_signedpath_checksum() initialization bug
data needs to be initialized since it is freed in the cleanup handler.
The bug was introduced by 0c6498b2b9f4f4ad8b9f224714c84714425f2ca3 and
is not part of any release.
Greg Hudson [Tue, 3 Mar 2015 00:19:19 +0000 (19:19 -0500)]
Add tests for AD-SIGNTICKET corner cases
Test situations where the previous AD-SIGNTICKET logic would not use
the same key to create and verify the AD-SIGNTICKET data. Also test a
case which forces the new verification logic to try multiple krbtgt
versions.
Greg Hudson [Mon, 2 Mar 2015 21:27:47 +0000 (16:27 -0500)]
Use local TGT for AD-SIGNTICKET processing
Always use the first key of the local TGT to create the AD-SIGNTICKET
checksum, and try the first key of the last three kvnos of the local
TGT to verify the checksum.
Greg Hudson [Wed, 11 Feb 2015 18:40:44 +0000 (13:40 -0500)]
Load local TGT in KDC requests
Ensure that we have the server realm TGT principal entry at hand for
AS and TGS requests. In the common case, this is the same as the AS
server or TGS header server principal, but in less common cases
(direct AS requests for service tickets, cross-realm TGS requests) we
will need to explicitly load it.
The local TGT entry is not used in this commit. In the short term, it
will be used to verify and sign CAMMACs and to shore up some edge
cases in AD-SIGNTICKET. In the longer term, we might allow realm
configuration variables to be stored in local TGT tl-data.
Greg Hudson [Mon, 9 Feb 2015 20:23:05 +0000 (15:23 -0500)]
Rename krbtgt variable in KDC code
In a TGS request, the header ticket server is usually a local or
cross-realm TGS principal, but for ticket modification requests it
doesn't have to be. Similarly, the server for an AS request is
usually a krbtgt principal, but in some cases it is not. Since the
KDC code must consider all possibilities, avoid using the name
"krbtgt" for entries which aren't necessarily TGTs.
In process_tgs_req(), rename krbtgt to header_server and tgskey to
header_key. In handle_authdata(), rename the parameters similarly and
pass NULL from process_as_req() for the header_server and header_key
parameters; the code which uses those parameters is adjusted to match.
In validate_transit_path(), rename krbtgt to header_srv.
Do not change the semantics of the sign_authdata DAL method at this
time, but more accurately document the krbtgt and krbtgt_key
parameters.
Remove plugins/authdata/greet, which was a v0 KDC module. Modify
plugins/authdata/greet_server to use the new interface. Within
greet_auth.c, remove the unused function greet_kdc_verify. Build the
greet_client and greet_server modules by default, but do not install
them.
Remove the server authdata interface declarations from authdata.h and
the code to load and invoke old KDC authdata modules. Add code to
load and invoke authdata modules using the new kdcauthdata pluggable
interface.
Add a pluggable interface for KDC authdata using the current plugin
infrastructure, mirroring the KDC functionality of authdata_plugin.h.
Like the old interface, this one isn't yet public.
Remove the static_authdata_systems table from kdc_authdata.c and
instead call the relevant functions explicitly in handle_authdata.
Eliminate the flags field from krb5_authdata_systems as it is no
longer used. Rename the functions to be more descriptive. Move
simple conditionals on authdata processing to handle_authdata for
clarity. Move handle_authdata to the end of the file to avoid the
need for static function declarations.
Greg Hudson [Wed, 10 Jun 2015 23:48:51 +0000 (19:48 -0400)]
Tolerate null oid pointer in gss_release_oid()
Under some circumstances, gss_inquire_name() can call
gss_release_oid() with a null oid pointer, which currently causes a
null dereference. The least invasive fix is for gss_release_oid() to
check for the invalid null pointer and return an error, like other
GSS-API functions do.
Christian Heimes [Fri, 15 May 2015 07:37:31 +0000 (09:37 +0200)]
Support SNI in MS-KKDCP client
In the k5tls plugin module, call SSL_set_tlsext_host_name() to allow
the server to use SNI support. SSL_set_tlsext_host_name() is a macro
which uses SSL_CTRL_SET_TLSEXT_HOSTNAME and is not available in all
versions of OpenSSL, so conditionalize on that constant.
Ben Kaduk [Mon, 11 May 2015 17:08:42 +0000 (13:08 -0400)]
Reboot after KfW installs to help the LSA cache
It seems that we need to restart in order to be able to query the
contents of the the LSA cache, even if the only contents of the LSA
cache are what we put there, and even if the Microsoft klist.exe
correctly reports the presence of tickets in the LSA cache.
Ben Kaduk [Tue, 5 May 2015 20:55:41 +0000 (16:55 -0400)]
Supply a hostrealm module to query the registry
Implement a default_realm function that checks the
{HKLM,HKCU}\Software\MIT\Kerberos5\default_realm registry values
on Windows, and just returns KRB5_PLUGIN_NO_HANDLE on Unix.
Ben Kaduk [Fri, 6 Mar 2015 20:42:10 +0000 (15:42 -0500)]
Fix loop to determine MSLSA principal name
When looping over principals, check the i-th entry instead of
looking at the 0-th entry each time through the loop. This would
only affect cases when multiple ticket entries were returned from
the LSA, the first one did not have a valid principal name, but
some other one did. It is expected that all of the returned
ticket entries will always have a valid client principal name, so
this is unlikely to cause any functional difference.
Ben Kaduk [Wed, 5 Dec 2012 17:15:07 +0000 (12:15 -0500)]
KfW shortcuts for make default, change password
Shortcut keys such as these (in the ACCELERATORS entry in the resource
file) are what let users type, e.g., ctrl-t to get to the "get tickets"
dialog directly from the main frame. We had shortcut keys for all the
other buttons already, so add these to complete the set.
The make default and change password functionality were already available
using keyboard-only interfaces via the ribbon access keys (tap alt,
then letters to walk through the tree of controls), but the two forms
of keyboard access are implemented differently.
Ben Kaduk [Fri, 10 Apr 2015 21:33:40 +0000 (17:33 -0400)]
Switch to Windows SDK Ribbon from MFC Ribbon
The MFC Ribbon implementation is not very accessible (e.g., to
screen reading software), whereas the windows ribbon provides
essentially the same functionality and good integration with
screen reading software, including the built-in Windows Narrator.
Remove the RT_RIBBON_XML resource from the resource file and
replace it with an inclusion of the generated kfwribbon.rc file.
Also remove the ribbon1.mfcribbon-ms ribbon description from the
res/ directory. Add the appropriate dependency relation in the
Makefile.
LeashUIApplication implements the IUIUApplication interfaces. It
appears to be difficult to cleanly tear down the underlying
IUIFramework and ribbon, since the WM_DESTROY event is handled by the
parent MFC window, which will not call IUIFramework::Destroy().
Manually inserting a call to IUIFramework::Destroy() in the shutdown
handling of the MFC classes is difficult, since the WM_DESTROY message
is handled by a different window than where the ribbon is initialized,
and the MFC framework will attempt to access window objects
corresponding to the UI Ribbon resources after they are destroyed,
which raises exceptions. It seems best to just go without destroying
the IUIFramework, since its lifecycle matches that of the application
and there will be no leaks during the application lifecycle.
LeashUICommandHandler implements the IUICommandHandler interfaces,
passing messages through to the existing MFC handlers, though the
default values for the various checkbox controls must be duplicated.
The (MFC) CMainFrame creates and maintains a handle to the
LeashUIApplication associated with the ribbon it creates, so that
it can query the height of the ribbon and redraw when the
LeashUIApplication signals that the ribbon size has changed.
Record that the added object files depend on kfwribbon.h, so that
the XML markup is compiled sufficiently early in the build.
Ben Kaduk [Thu, 19 Mar 2015 18:14:02 +0000 (14:14 -0400)]
Mention Visual Studio 2010 SP1 in windows README
The service pack is needed to avoid a linker error due to an
issue with the cvtres.exe utility, which manifests as
LINK: fatal error LNK1123: failure during conversion to COFF: file
invalid or corrupt.
Benjamin Kaduk [Fri, 17 Jan 2014 21:02:13 +0000 (16:02 -0500)]
XML Ribbon markup file
The standard windows library ribbon interface is either constructed
at runtime or specified in an XML file. Since we have a static
set of functionality in our ribbon, it is simplest to just use the
XML file.
This should duplicate the interfaces currently provided by the
MFC ribbon, though the menu items in the file menu are slightly
taller than they used to be.
Use uicc.exe to compile the XML to the binary format and produce
a kfwribon.rc resource file and kfwribbon.h header.
Benjamin Kaduk [Mon, 27 Jan 2014 18:07:38 +0000 (13:07 -0500)]
Import separate large ribbon bitmaps
This is the content from homelarge.bmp split up into the
separate component images, since the windows ribbon has the
(more sane) interface of using a separate resource for each
graphic, instead of expecting them all in a single bitmap which
is sliced up at runtime.
The bitmaps are required to have alpha channels, and it seems that
the easiest way to generate bitmaps with alpha channels is to use
Microsoft Paint, since the normal Unix open-source graphics tools
do not want to output this format.
Benjamin Kaduk [Wed, 22 Jan 2014 05:05:57 +0000 (00:05 -0500)]
Remove MBCS from leash's DEFINES
This is just enabling the use of multi-byte character set in the
MFC library, but we do not appear to make use of this feature.
Visual Studio 2013 gives ominous warnings that support for it may
be removed in future versions, so quiet the build and do not
enable the deprecated feature we are not using.
Ben Kaduk [Tue, 14 Apr 2015 19:33:20 +0000 (15:33 -0400)]
Fix leash crash found in some build environments
When freeing a credentials cache name obtained from
krb5_cc_get_full_name(), the code was using plain free()
instead of the matching krb5_free_string(). If these routines
are picked from different modules at runtime, the mismatch
will cause a crash in free(), so change to using the matched
deallocation function.
In order to use it in leash, it must be declared in Lglobals.h and
the function pointer symbol defined in Leash.cpp.
This file is out of date, and we now use the wiki for the kind of
material it covers. Most of the information here is covered
http://k5wiki.kerberos.org/wiki/Committer_resources
Greg Hudson [Tue, 24 Mar 2015 16:02:37 +0000 (12:02 -0400)]
Prevent requires_preauth bypass [CVE-2015-2694]
In the OTP kdcpreauth module, don't set the TKT_FLG_PRE_AUTH bit until
the request is successfully verified. In the PKINIT kdcpreauth
module, don't respond with code 0 on empty input or an unconfigured
realm. Together these bugs could cause the KDC preauth framework to
erroneously treat a request as pre-authenticated.
CVE-2015-2694:
In MIT krb5 1.12 and later, when the KDC is configured with PKINIT
support, an unauthenticated remote attacker can bypass the
requires_preauth flag on a client principal and obtain a ciphertext
encrypted in the principal's long-term key. This ciphertext could be
used to conduct an off-line dictionary attack against the user's
password.
Greg Hudson [Wed, 4 Mar 2015 19:43:20 +0000 (14:43 -0500)]
Add tests for key rotation and 32-bit keytab kvnos
In t_keytab.py, test that kvnos no longer wrap after 255 or 32767, that
they do wrap from 65535 to 1, and that kadmin ktrem preserves the more
recent key after a wraparound.
Also test edge cases of the 32-bit keytab kvno extension using
hand-crafted keytab entries.
Greg Hudson [Sun, 8 Mar 2015 20:52:11 +0000 (16:52 -0400)]
Adjust keytab kvno workarounds
In krb5_ktfile_get_entry(), change the pivot and fuzzy match
workarounds for kvnos to work with the 32-bit kvno extension. For the
pivot logic, try to recognize kvno wraparound at boundary by looking
at the relative timestamps and the size of the version difference.
For the fuzzy match logic, remember the first match against the low 8
bits of the desired kvno, but keep searching for an exact match.
projects / thirdparty / krb5.git / log
