diff --git a/SPECS-EXTENDED/samba/CVE-2025-49716-netlogon.patch b/SPECS-EXTENDED/samba/CVE-2025-49716-netlogon.patch new file mode 100644 index 00000000000..73c3f26f1e0 --- /dev/null +++ b/SPECS-EXTENDED/samba/CVE-2025-49716-netlogon.patch @@ -0,0 +1,457 @@ +commit da31286de98918b4a3269bd3723df619ca788018 +Author: Günther Deschner +Date: Wed Jul 2 21:59:48 2025 +0200 + + s3-winbindd: Fix internal winbind dsgetdcname calls w.r.t. domain name + + when winbind calls to dsgetdcname internally, make sure to + prefer the DNS domain name if we have it. Makes DNS lookups much more + likely to succeed. + + BUG: https://bugzilla.samba.org/show_bug.cgi?id=15876 + + Guenther + + Signed-off-by: Guenther Deschner + Reviewed-by: Andreas Schneider + Reviewed-by: Ralph Boehme + + Autobuild-User(master): Ralph Böhme + Autobuild-Date(master): Mon Jul 7 10:44:37 UTC 2025 on atb-devel-224 + +diff --git a/source3/winbindd/wb_queryuser.c b/source3/winbindd/wb_queryuser.c +index 2eb61406fc5..468eb5a50b8 100644 +--- a/source3/winbindd/wb_queryuser.c ++++ b/source3/winbindd/wb_queryuser.c +@@ -215,9 +215,19 @@ static void wb_queryuser_done(struct tevent_req *subreq) + + if (NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) && + !state->tried_dclookup) { +- subreq = wb_dsgetdcname_send( +- state, state->ev, state->info->domain_name, NULL, NULL, +- DS_RETURN_DNS_NAME); ++ const char *domain_name = find_dns_domain_name( ++ state->info->domain_name); ++ ++ D_DEBUG("GetNssInfo got DOMAIN_CONTROLLER_NOT_FOUND, calling " ++ "wb_dsgetdcname_send(%s)\n", ++ domain_name); ++ ++ subreq = wb_dsgetdcname_send(state, ++ state->ev, ++ domain_name, ++ NULL, ++ NULL, ++ DS_RETURN_DNS_NAME); + if (tevent_req_nomem(subreq, req)) { + return; + } +diff --git a/source3/winbindd/wb_sids2xids.c b/source3/winbindd/wb_sids2xids.c +index 7ab8dd133fd..4c4af782205 100644 +--- a/source3/winbindd/wb_sids2xids.c ++++ b/source3/winbindd/wb_sids2xids.c +@@ -306,12 +306,22 @@ static void wb_sids2xids_done(struct tevent_req *subreq) + !state->tried_dclookup) { + + struct lsa_DomainInfo *d; ++ const char *domain_name = NULL; + + d = &state->idmap_doms.domains[state->dom_index]; + +- subreq = wb_dsgetdcname_send( +- state, state->ev, d->name.string, NULL, NULL, +- DS_RETURN_DNS_NAME); ++ domain_name = find_dns_domain_name(d->name.string); ++ ++ D_DEBUG("Domain controller not found. Calling " ++ "wb_dsgetdcname_send(%s) to get it.\n", ++ domain_name); ++ ++ subreq = wb_dsgetdcname_send(state, ++ state->ev, ++ domain_name, ++ NULL, ++ NULL, ++ DS_RETURN_DNS_NAME); + if (tevent_req_nomem(subreq, req)) { + return; + } +diff --git a/source3/winbindd/wb_xids2sids.c b/source3/winbindd/wb_xids2sids.c +index 929a3b8e425..9557a097e2a 100644 +--- a/source3/winbindd/wb_xids2sids.c ++++ b/source3/winbindd/wb_xids2sids.c +@@ -348,9 +348,15 @@ static void wb_xids2sids_dom_done(struct tevent_req *subreq) + if (NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) && + !state->tried_dclookup) { + +- subreq = wb_dsgetdcname_send( +- state, state->ev, state->dom_map->name, NULL, NULL, +- DS_RETURN_DNS_NAME); ++ const char *domain_name = find_dns_domain_name( ++ state->dom_map->name); ++ ++ subreq = wb_dsgetdcname_send(state, ++ state->ev, ++ domain_name, ++ NULL, ++ NULL, ++ DS_RETURN_DNS_NAME); + if (tevent_req_nomem(subreq, req)) { + return; + } +diff --git a/source3/winbindd/winbindd_dual.c b/source3/winbindd/winbindd_dual.c +index 73715b4b57d..8a480bdad87 100644 +--- a/source3/winbindd/winbindd_dual.c ++++ b/source3/winbindd/winbindd_dual.c +@@ -523,6 +523,7 @@ static void wb_domain_request_trigger(struct tevent_req *req, + struct wb_domain_request_state *state = tevent_req_data( + req, struct wb_domain_request_state); + struct winbindd_domain *domain = state->domain; ++ const char *domain_name = NULL; + struct tevent_req *subreq = NULL; + size_t shortest_queue_length; + +@@ -593,8 +594,11 @@ static void wb_domain_request_trigger(struct tevent_req *req, + * which is indicated by DS_RETURN_DNS_NAME. + * For NT4 domains we still get the netbios name. + */ ++ ++ domain_name = find_dns_domain_name(state->domain->name); ++ + subreq = wb_dsgetdcname_send(state, state->ev, +- state->domain->name, ++ domain_name, + NULL, /* domain_guid */ + NULL, /* site_name */ + DS_RETURN_DNS_NAME); /* flags */ +diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h +index 2a829b0171a..7afa85fdfba 100644 +--- a/source3/winbindd/winbindd_proto.h ++++ b/source3/winbindd/winbindd_proto.h +@@ -529,6 +529,7 @@ bool parse_sidlist(TALLOC_CTX *mem_ctx, const char *sidstr, + struct dom_sid **sids, uint32_t *num_sids); + bool parse_xidlist(TALLOC_CTX *mem_ctx, const char *xidstr, + struct unixid **pxids, uint32_t *pnum_xids); ++const char *find_dns_domain_name(const char *domain_name); + + /* The following definitions come from winbindd/winbindd_wins.c */ + +diff --git a/source3/winbindd/winbindd_util.c b/source3/winbindd/winbindd_util.c +index c2f02b74211..2e03c708de6 100644 +--- a/source3/winbindd/winbindd_util.c ++++ b/source3/winbindd/winbindd_util.c +@@ -2225,3 +2225,22 @@ fail: + TALLOC_FREE(xids); + return false; + } ++ ++/** ++ * Helper to extract the DNS Domain Name from a struct winbindd_domain ++ */ ++const char *find_dns_domain_name(const char *domain_name) ++{ ++ struct winbindd_domain *wbdom = NULL; ++ ++ wbdom = find_domain_from_name(domain_name); ++ if (wbdom == NULL) { ++ return domain_name; ++ } ++ ++ if (wbdom->active_directory && wbdom->alt_name != NULL) { ++ return wbdom->alt_name; ++ } ++ ++ return wbdom->name; ++} + +commit 0a66a0ed2773f2456c1b70c4f91894085a49f790 +Author: Stefan Metzmacher +Date: Fri May 9 09:38:41 2025 +0200 + + s3:winbindd: avoid using any netlogon call to get a dc name + + BUG: https://bugzilla.samba.org/show_bug.cgi?id=15876 + + Signed-off-by: Stefan Metzmacher + Reviewed-by: Guenther Deschner + Reviewed-by: Andreas Schneider + Reviewed-by: Ralph Boehme + +diff --git a/source3/winbindd/winbindd_cm.c b/source3/winbindd/winbindd_cm.c +index 0e671ca22be..13c29c0cdde 100644 +--- a/source3/winbindd/winbindd_cm.c ++++ b/source3/winbindd/winbindd_cm.c +@@ -776,135 +776,6 @@ static bool cm_is_ipc_credentials(struct cli_credentials *creds) + return ret; + } + +-static bool get_dc_name_via_netlogon(struct winbindd_domain *domain, +- fstring dcname, +- struct sockaddr_storage *dc_ss, +- uint32_t request_flags) +-{ +- struct winbindd_domain *our_domain = NULL; +- struct rpc_pipe_client *netlogon_pipe = NULL; +- NTSTATUS result; +- WERROR werr; +- TALLOC_CTX *mem_ctx; +- unsigned int orig_timeout; +- const char *tmp = NULL; +- const char *p; +- struct dcerpc_binding_handle *b; +- +- /* Hmmmm. We can only open one connection to the NETLOGON pipe at the +- * moment.... */ +- +- if (IS_DC) { +- return False; +- } +- +- if (domain->primary) { +- return False; +- } +- +- our_domain = find_our_domain(); +- +- if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) { +- return False; +- } +- +- result = cm_connect_netlogon(our_domain, &netlogon_pipe); +- if (!NT_STATUS_IS_OK(result)) { +- talloc_destroy(mem_ctx); +- return False; +- } +- +- b = netlogon_pipe->binding_handle; +- +- /* This call can take a long time - allow the server to time out. +- 35 seconds should do it. */ +- +- orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000); +- +- if (our_domain->active_directory) { +- struct netr_DsRGetDCNameInfo *domain_info = NULL; +- +- /* +- * TODO request flags are not respected in the server +- * (and in some cases, like REQUIRE_PDC, causes an error) +- */ +- result = dcerpc_netr_DsRGetDCName(b, +- mem_ctx, +- our_domain->dcname, +- domain->name, +- NULL, +- NULL, +- request_flags|DS_RETURN_DNS_NAME, +- &domain_info, +- &werr); +- if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) { +- tmp = talloc_strdup( +- mem_ctx, domain_info->dc_unc); +- if (tmp == NULL) { +- DEBUG(0, ("talloc_strdup failed\n")); +- talloc_destroy(mem_ctx); +- return false; +- } +- if (domain->alt_name == NULL) { +- domain->alt_name = talloc_strdup(domain, +- domain_info->domain_name); +- if (domain->alt_name == NULL) { +- DEBUG(0, ("talloc_strdup failed\n")); +- talloc_destroy(mem_ctx); +- return false; +- } +- } +- if (domain->forest_name == NULL) { +- domain->forest_name = talloc_strdup(domain, +- domain_info->forest_name); +- if (domain->forest_name == NULL) { +- DEBUG(0, ("talloc_strdup failed\n")); +- talloc_destroy(mem_ctx); +- return false; +- } +- } +- } +- } else { +- result = dcerpc_netr_GetAnyDCName(b, mem_ctx, +- our_domain->dcname, +- domain->name, +- &tmp, +- &werr); +- } +- +- /* And restore our original timeout. */ +- rpccli_set_timeout(netlogon_pipe, orig_timeout); +- +- if (!NT_STATUS_IS_OK(result)) { +- DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n", +- nt_errstr(result))); +- talloc_destroy(mem_ctx); +- return false; +- } +- +- if (!W_ERROR_IS_OK(werr)) { +- DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n", +- win_errstr(werr))); +- talloc_destroy(mem_ctx); +- return false; +- } +- +- /* dcerpc_netr_GetAnyDCName gives us a name with \\ */ +- p = strip_hostname(tmp); +- +- fstrcpy(dcname, p); +- +- talloc_destroy(mem_ctx); +- +- DEBUG(10,("dcerpc_netr_GetAnyDCName returned %s\n", dcname)); +- +- if (!resolve_name(dcname, dc_ss, 0x20, true)) { +- return False; +- } +- +- return True; +-} +- + /** + * Helper function to assemble trust password and account name + */ +@@ -1536,21 +1407,6 @@ static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain, + bool is_our_domain; + enum security_types sec = (enum security_types)lp_security(); + +- is_our_domain = strequal(domain->name, lp_workgroup()); +- +- /* If not our domain, get the preferred DC, by asking our primary DC */ +- if ( !is_our_domain +- && get_dc_name_via_netlogon(domain, dcname, &ss, request_flags) +- && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs, +- num_dcs) ) +- { +- char addr[INET6_ADDRSTRLEN]; +- print_sockaddr(addr, sizeof(addr), &ss); +- DEBUG(10, ("Retrieved DC %s at %s via netlogon\n", +- dcname, addr)); +- return True; +- } +- + if ((sec == SEC_ADS) && (domain->alt_name != NULL)) { + char *sitename = NULL; + +diff --git a/source3/winbindd/winbindd_dual_srv.c b/source3/winbindd/winbindd_dual_srv.c +index 13345caa41b..fccc1f0aff5 100644 +--- a/source3/winbindd/winbindd_dual_srv.c ++++ b/source3/winbindd/winbindd_dual_srv.c +@@ -552,106 +552,11 @@ NTSTATUS _wbint_QueryUserRidList(struct pipes_struct *p, + + NTSTATUS _wbint_DsGetDcName(struct pipes_struct *p, struct wbint_DsGetDcName *r) + { +- struct winbindd_domain *domain = wb_child_domain(); +- struct rpc_pipe_client *netlogon_pipe; +- struct netr_DsRGetDCNameInfo *dc_info; +- NTSTATUS status; +- WERROR werr; +- unsigned int orig_timeout; +- struct dcerpc_binding_handle *b; +- bool retry = false; +- bool try_dsrgetdcname = false; +- +- if (domain == NULL) { +- return dsgetdcname(p->mem_ctx, global_messaging_context(), +- r->in.domain_name, r->in.domain_guid, +- r->in.site_name ? r->in.site_name : "", +- r->in.flags, +- r->out.dc_info); +- } +- +- if (domain->active_directory) { +- try_dsrgetdcname = true; +- } +- +-reconnect: +- status = cm_connect_netlogon(domain, &netlogon_pipe); +- +- reset_cm_connection_on_error(domain, NULL, status); +- if (!NT_STATUS_IS_OK(status)) { +- DEBUG(10, ("Can't contact the NETLOGON pipe\n")); +- return status; +- } +- +- b = netlogon_pipe->binding_handle; +- +- /* This call can take a long time - allow the server to time out. +- 35 seconds should do it. */ +- +- orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000); +- +- if (try_dsrgetdcname) { +- status = dcerpc_netr_DsRGetDCName(b, +- p->mem_ctx, domain->dcname, +- r->in.domain_name, NULL, r->in.domain_guid, +- r->in.flags, r->out.dc_info, &werr); +- if (NT_STATUS_IS_OK(status) && W_ERROR_IS_OK(werr)) { +- goto done; +- } +- if (!retry && +- reset_cm_connection_on_error(domain, NULL, status)) +- { +- retry = true; +- goto reconnect; +- } +- try_dsrgetdcname = false; +- retry = false; +- } +- +- /* +- * Fallback to less capable methods +- */ +- +- dc_info = talloc_zero(r->out.dc_info, struct netr_DsRGetDCNameInfo); +- if (dc_info == NULL) { +- status = NT_STATUS_NO_MEMORY; +- goto done; +- } +- +- if (r->in.flags & DS_PDC_REQUIRED) { +- status = dcerpc_netr_GetDcName(b, +- p->mem_ctx, domain->dcname, +- r->in.domain_name, &dc_info->dc_unc, &werr); +- } else { +- status = dcerpc_netr_GetAnyDCName(b, +- p->mem_ctx, domain->dcname, +- r->in.domain_name, &dc_info->dc_unc, &werr); +- } +- +- if (!retry && reset_cm_connection_on_error(domain, b, status)) { +- retry = true; +- goto reconnect; +- } +- if (!NT_STATUS_IS_OK(status)) { +- DEBUG(10, ("dcerpc_netr_Get[Any]DCName failed: %s\n", +- nt_errstr(status))); +- goto done; +- } +- if (!W_ERROR_IS_OK(werr)) { +- DEBUG(10, ("dcerpc_netr_Get[Any]DCName failed: %s\n", +- win_errstr(werr))); +- status = werror_to_ntstatus(werr); +- goto done; +- } +- +- *r->out.dc_info = dc_info; +- status = NT_STATUS_OK; +- +-done: +- /* And restore our original timeout. */ +- rpccli_set_timeout(netlogon_pipe, orig_timeout); +- +- return status; ++ return dsgetdcname(p->mem_ctx, global_messaging_context(), ++ r->in.domain_name, r->in.domain_guid, ++ r->in.site_name ? r->in.site_name : "", ++ r->in.flags, ++ r->out.dc_info); + } + + NTSTATUS _wbint_LookupRids(struct pipes_struct *p, struct wbint_LookupRids *r) diff --git a/SPECS-EXTENDED/samba/samba.spec b/SPECS-EXTENDED/samba/samba.spec index 635c17153e0..cf40bae8489 100644 --- a/SPECS-EXTENDED/samba/samba.spec +++ b/SPECS-EXTENDED/samba/samba.spec @@ -85,7 +85,7 @@ Name: samba Version: 4.12.5 -Release: 6%{?dist} +Release: 7%{?dist} %define samba_depver %{version}-%{release} @@ -247,6 +247,8 @@ BuildRequires: krb5-server >= %{required_mit_krb5} BuildRequires: bind %endif +Patch0: CVE-2025-49716-netlogon.patch + # filter out perl requirements pulled in from examples in the docdir. %global __requires_exclude_from ^%{_docdir}/.*$ %global __provides_exclude_from ^%{_docdir}/.*$ @@ -796,6 +798,7 @@ and use CTDB instead. %prep +%autosetup -p1 xzcat %{SOURCE0} | gpgv2 --quiet --keyring %{SOURCE2} %{SOURCE1} - %autosetup -n samba-%{version}%{pre_release} -p1 # Remove `xsltproc` binary if installed. This is only used for docs, which we do not build @@ -3438,6 +3441,9 @@ fi %endif %changelog +* Fri Oct 10 2025 Andy Zaugg - 4.12.5-7 +- Fix winbind netlogon issue with Windows security update 2025 CVE-2025-49716 + * Wed Apr 17 2024 Andrew Phelps - 4.12.5-6 - Fix build issue with docs by removing xsltproc