A change to replace -h and -p options in OpenLDAP command line utilities
causes also an update in the help text in sudorule plugin. This, sadly,
makes existing translations of that text not valid anymore. However, we
have to change the text as OpenLDAP 2.6+ will make the command
referenced in the help text incorrect.
The change in OpenLDAP 2.6+ implements deprecation that was announced by
OpenLDAP project around 20 years ago, so all existing tools support -H
option.
See also: https://bugs.openldap.org/show_bug.cgi?id=8618
Related: https://pagure.io/freeipa/issue/9106
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
pylint 2.9 thinks that __add_principal is a class-level method that is
unused. It is a local function inside one of class methods and is used
directly inside that method.
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
OpenLDAP 2.6+ finally deprecated -h and -p options in all its command
line tools. They are not allowed anymore and cause ldap* tools to stop
hard with 'unknown option' error.
Fix this by always using -H url option instead. Deriving default value
for -H url from the configuration file still works, it is only -h and -p
that were deprecated.
See also: https://bugs.openldap.org/show_bug.cgi?id=8618
Fixes: https://pagure.io/freeipa/issue/9106
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
MIT Kerberos 1.20 changes DAL interface around PAC record issuance:
sign_authdata callback is removed and replaced with issue_pac one.
The signatures are different and logic changed as well.
Prepare for KDB version 9 by moving PAC implementation into separate
source files. ipa_kdb_mspac.c is left with most of the common code.
FreeIPA supports sign_authdata callback since KDB version 6, move current
implementation to ipa_kdb_mspac_v6.c.
KDB version 8 actually changed sign_authdata interface and we accounted
to that in ipa_kdb.c with a stub that re-uses v6 version. Keep it as it
is right now.
Finally, add KDB version 9 stub files. Compiling against MIT Kerberos
1.20 does not work yet, thus explicit #error message in ipa_kdb.c. This
will be worked on later.
Related: https://pagure.io/freeipa/issue/9083
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
OpenLDAP 2.6 deprecated separate libldap/libldap_r, there is only one
(reentrant) variant for the library.
Attempt to use _r variant by default. In case it is missing, assume we
are using OpenLDAP 2.6 which has libraries without _r suffix. The
functions are still reentrant so there is not functional difference.
Fixes: https://pagure.io/freeipa/issue/9080
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
New versions of MS-KILE and MS-SFU after Windows Server November 2021
security updates add PAC_REQUESTER_SID buffer check behavior:
- PAC_REQUESTER_SID should only be added for TGT requests
- if PAC_REQUESTER_SID is present, KDC must verify that the cname on
the ticket resolves to the account with the same SID as the
PAC_REQUESTER_SID. If it doesn't KDC must respond with
KDC_ERR_TKT_REVOKED
Change requester SID check to skip exact check for non-local
PAC_REQUESTER_SID but harden to ensure it comes from the trusted domains
we know about.
If requester SID is the same as in PAC, we already do cname vs PAC SID
verification.
With these changes FreeIPA works against Windows Server 2019 with
November 2021 security fixes in cross-realm S4U2Self operations.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
MS-KILE 3.3.5.6.4.8 in revision after Windows Server November 2021
security fixes added the following requirement:
- PAC_REQUESTER_SID is only added in TGT case (including referrals and
tickets to RODCs)
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Due to a bug in GCC 9 and GCC 10 optimizing code, all C library
comparison functions should be used with explicit result comparison in
the code to avoid problems described in
http://r6.ca/blog/20200929T023701Z.htmlhttps://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189
The code below is affected:
```
if (strcmp(a, b) || !strcmp(c, d)) ...
```
while the code below is not affected:
```
if (strcmp(a, b) != 0 || strcmp(c, d)) == 0
```
for all C library cmp functions and related:
- strcmp(), strncmp()
- strcasecmp(), strncasecmp()
- stricmp(), strnicmp()
- memcmp()
This PR idea is based on the pull request by 'Nicolas Williams <nico@twosigma.com>'
to Heimdal Kerberos: https://github.com/heimdal/heimdal/pull/855
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
KDB driver extensively uses NDR parsing and marshalling code provided by
Samba libraries. Since these libraries are internal to Samba, they often
change structures without updating SONAME. Typical changes include
adding new structures, so we should require samba-client-libs we were
built against.
There used to be %requires_eq macros in RPM but it was removed from
Fedora some time ago. We need greater than or equal version of it, thus
%ipa_requires_gt is defined in the spec file.
Related: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>
Previously, ipadb_check_logon_info() was called only for cross-realm
case. Now we call it for both in-realm and cross-realm cases. In case of
the S4U2Proxy, we would be passed a PAC of the original caller which
might be a principal from the trusted realm. We cannot validate that PAC
against our local client DB entry because this is the proxy entry which
is guaranteed to have different SID.
In such case, validate the SID of the domain in PAC against our realm
and any trusted doman but skip an additional check of the DB entry in
the S4U2Proxy case.
Related: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
If the SID was explicitly set for the host or service entry, honor it
when issuing PAC. For normal services and hosts we don't allocate
individual SIDs but for cifs/... principals on domain members we do as
they need to login to Samba domain controller.
Related: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
As a part of CVE-2020-25717 mitigations, Samba now assumes 'CLASSIC
PRIMARY DOMAIN CONTROLLER' server role does not support Kerberos
operations. This is the role that IPA domain controller was using for
its hybrid NT4/AD-like operation.
Instead, 'IPA PRIMARY DOMAIN CONTROLLER' server role was introduced in
Samba. Switch to this role for new installations and during the upgrade
of servers running ADTRUST role.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
As part of CVE-2020-25717 mitigations, Samba expects correct user
account flags in the PAC. This means for services and host principals we
should be using ACB_WSTRUST or ACB_SVRTRUST depending on whether they
run on IPA clients ("workstation" or "domain member") or IPA servers
("domain controller").
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
PAC_ATTRIBUTES_INFO PAC buffer allows both client and KDC to tell
whether a PAC structure was requested by the client or it was provided
by the KDC implicitly. Kerberos service then can continue processing or
deny access in case client explicitly requested to operate without PAC.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
CVE-2020-25721 mitigation: KDC must provide the new PAC_REQUESTER_SID
buffer with ObjectSID value associated with the requester's principal.
The mitigation only works if NDR library supports the PAC_REQUESTER_SID
buffer type. In case we cannot detect it at compile time, a warning will
be displayed at configure stage.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
CVE-2020-25721 mitigation: KDC must provide the new HAS_SAM_NAME_AND_SID
buffer with sAMAccountName and ObjectSID values associated with the
principal.
The mitigation only works if NDR library supports the
PAC_UPN_DNS_INFO_EX buffer type. In case we cannot detect it at compile
time, a warning will be displayed at configure stage.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
When working with aliased entries, we need a reliable way to detect
whether two principals reference the same database entry. This is
important in S4U checks.
Ideally, we should be using SIDs for these checks as S4U requires PAC
record presence which cannot be issued without a SID associated with an
entry. This is true for user principals and a number of host/service
principals associated with Samba. Other service principals do not have
SIDs because we do not allocate POSIX IDs to them in FreeIPA. When PAC
is issued for these principals, they get SID of a domain computer or
domain controller depending on their placement (IPA client or IPA
server).
Since 389-ds always returns unique entry DN for the same entry, rely on
this value instead. We could have used ipaUniqueID but for Kerberos
principals created through the KDB (kadmin/kdb5_util) we don't have
ipaUniqueID in the entry.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
If the principal entry in LDAP has SID associated with it, store it to
be able to quickly assess the SID when processing PAC.
Also rename string_to_sid to IPA-specific version as it uses different
prototype than Samba version.
Fixes: https://pagure.io/freeipa/issue/9031
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Robert Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Even though specifying 'raw' format is allowed, this breaks Read The
Docs which is not able to complete the full build of documentation and,
therefore, doesn't publish an updated documentation.
Pushed under one-liner rule.
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Fedora ELN represents itself as a RHEL but it does not have
redhat-logos-ipa package. CentOS Stream does not have redhat-logos-ipa
but has centos-logos-ipa package. Both RHEL and CentOS Stream provide
system-logos-ipa so we can depend on it instead.
This allows to make IPA packages installable on CentOS Stream and on
Fedora ELN.
Fixes: https://pagure.io/freeipa/issue/8874
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
HTTP service uses different user for keytab ownership than the service
user. On Fedora this leads to http.keytab being owned by 'apache' user
after IPA deployment while it should be owned by 'root' to allow
GSSPROXY configuration to work correctly.
The situation is fixed during upgrade (ipa-server-upgrade) but it means
for new deployments there might be a period of unexplained Web UI
authentication failures.
Fixes: https://pagure.io/freeipa/issue/8872
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Update documentation now that we moved IRC channels #freeipa and #sssd
to Libera.chat network.
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
When LDAP server disconnects ipa-otpd client connection due to a
timeout, ipa-otpd instance would stop and report an issue. This confuses
systemd service reporting, so for these situations we better to shut
down gracefully.
Fixes: https://pagure.io/freeipa/issue/6587
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Simo Sorce <ssorce@redhat.com>
systemd-resolved in Fedora 34+ returns SERVFAIL for reverse zone that
does not yet exist when we attempt to look it up before installation.
Assume that this is OK -- we are going to create the zone ourselves
during installation.
Fixes: https://pagure.io/freeipa/issue/8794
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
- 389-ds fixes an information disclosure during unsuccessful LDAP BIND
operation, CVE-2020-35518, https://github.com/389ds/389-ds-base/issues/4609
- Dogtag PKI adopted to work with 389-ds with the fix,
https://github.com/dogtagpki/pki/issues/3458
FreeIPA needs to require new Dogtag and 389-ds versions on all Fedora
and RHEL versions.
RHEL 8 version is set to 1.4.3.16-12 which is the official build after
pki-core was fixed to work with the CVE fixes.
In order to avoid excessive %if/%endif conditionals in the spec file, I
have added a short Lua table with 389-ds versions for F32-33. F34 and
Rawhide will fallback to the same newer 389-ds 2.0.3 version. We do not
support building on F31 or older Fedora anymore as they are EOLed
already.
Fixes: https://pagure.io/freeipa/issue/8705
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Add prototype to the exported function
Replace few tabs by spaces and mark static code as static.
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
On Fedora 33 GCC defaults to -Wmissing-prototypes and emits warnings
about function prototypes missing. If -Werror is specified, this breaks
compilation.
We also default to -Werror=implicit-function-declaration
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
There are few fields in KDB structures that have 'conflicting' types but
need to be compared. They come from MIT Kerberos and we have no choice
here.
In the same way, SID structures have own requirements.
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Calling to ipadb_get_connection() will remove LDAP context if any error
happens. This means upper layers must always verify that LDAP context
exists after such calls.
ipadb_get_user_auth() may re-read global configuration and that may fail
and cause IPA context to have NULL LDAP context.
Fixes: https://pagure.io/freeipa/issue/8681
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Robbie Harwood <rharwood@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
system_u:system_r:init_t:s0 cannot execute gpg=agent when SELinux is in
enforcing mode. Use SELinux context that allows this execution:
system_u:system_r:initrc_t:s0 and wrap the whole execution into a bash
run to make sure init_t -> initrc_t transition.
Fixes: https://pagure.io/freeipa/issue/8699
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Refactoring ipa-rmkeytab with commit
f3f9672d52 led to new error code 7 when
MIT Kerberos fails to iterate through the keys. It appears now in places
where in past error code 3 was returned.
Related: https://pagure.io/freeipa/issue/8658
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
[MS-NRPC] section 2.2.1.4.11 requires that the structure
NETLOGON_VALIDATION_SAM_INFO has the same values as defined in the
KERB_VALIDATION_INFO structure from [MS-PAC] section 2.5.
Samba's netr_SamBaseInfo.domain_name corresponds to
KERB_VALIDATION_INFO.LogonDomainName and must be a NetBIOS name of the
domain, not a DNS one.
Failure to provide NetBIOS name here actually breaks
netr_LogonSamLogonEx call issued by IPA-enrolled Samba domain member
which is confused by the returned value:
[2021/01/30 16:36:36.636010, 0, pid=1633, effective(0, 0), real(0, 0), class=winbind]
../../source3/winbindd/winbindd_util.c: 175(add_trusted_domain)
add_trusted_domain: SID [S-1-5-21-3342930694-1632731913-1318603033]
already used by domain [INTERNAL], expected [internal.example.test]
[2021/01/30 16:36:36.636050, 10, pid=1633, effective(0, 0), real(0, 0), class=winbind]
../../source3/winbindd/winbindd_util.c:362(add_trusted_domain_from_auth)
add_trusted_domain_from_auth: Adding domain [internal.example.test]
with sid [S-1-5-21-3342930694-1632731913-1318603033] failed
[2021/01/30 16:36:36.636060, 0, pid=1633, effective(0, 0), real(0, 0), class=winbind]
../../source3/winbindd/winbindd_pam_auth_crap.c:169(winbindd_pam_auth_crap_done)
winbindd_pam_auth_crap_done: add_trusted_domain_from_auth failed
[2021/01/30 16:36:36.636079, 10, pid=1633, effective(0, 0), real(0, 0), class=winbind]
../../source3/winbindd/winbindd.c:814(process_request_done)
process_request_done: [smbd(1650):PAM_AUTH_CRAP]: NT_STATUS_LOGON_FAILURE
Fixes: https://pagure.io/freeipa/issue/8636
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Sumit Bose <sbose@redhat.com>
Alexander Bokovoy