diff options
| -rw-r--r-- | source4/rpc_server/netlogon/dcerpc_netlogon.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/source4/rpc_server/netlogon/dcerpc_netlogon.c b/source4/rpc_server/netlogon/dcerpc_netlogon.c index d5f7d2afae..b948d1210e 100644 --- a/source4/rpc_server/netlogon/dcerpc_netlogon.c +++ b/source4/rpc_server/netlogon/dcerpc_netlogon.c @@ -87,6 +87,9 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3(struct dcesrv_call_state *dce_ca const char *attrs[] = {"unicodePwd", "userAccountControl", "objectSid", NULL}; + const char *trust_dom_attrs[] = {"flatname", NULL}; + const char *account_name; + ZERO_STRUCTP(r->out.credentials); *r->out.rid = 0; *r->out.negotiate_flags = *r->in.negotiate_flags; @@ -101,10 +104,54 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3(struct dcesrv_call_state *dce_ca if (sam_ctx == NULL) { return NT_STATUS_INVALID_SYSTEM_SERVICE; } + + if (r->in.secure_channel_type == SEC_CHAN_DNS_DOMAIN) { + char *encoded_account = ldb_binary_encode_string(mem_ctx, r->in.account_name); + char *flatname; + if (!encoded_account) { + return NT_STATUS_NO_MEMORY; + } + + /* Kill the trailing dot */ + if (encoded_account[strlen(encoded_account)-1] == '.') { + encoded_account[strlen(encoded_account)-1] = '\0'; + } + + /* pull the user attributes */ + num_records = gendb_search(sam_ctx, mem_ctx, NULL, &msgs, trust_dom_attrs, + "(&(trustPartner=%s)(objectclass=trustedDomain))", + encoded_account); + + if (num_records == 0) { + DEBUG(3,("Couldn't find trust [%s] in samdb.\n", + encoded_account)); + return NT_STATUS_ACCESS_DENIED; + } + + if (num_records > 1) { + DEBUG(0,("Found %d records matching user [%s]\n", num_records, r->in.account_name)); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + flatname = ldb_msg_find_attr_as_string(msgs[0], "flatname", NULL); + if (!flatname) { + /* No flatname for this trust - we can't proceed */ + return NT_STATUS_ACCESS_DENIED; + } + account_name = talloc_asprintf(mem_ctx, "%s$", flatname); + + if (!account_name) { + return NT_STATUS_NO_MEMORY; + } + + } else { + account_name = r->in.account_name; + } + /* pull the user attributes */ num_records = gendb_search(sam_ctx, mem_ctx, NULL, &msgs, attrs, "(&(sAMAccountName=%s)(objectclass=user))", - r->in.account_name); + ldb_binary_encode_string(mem_ctx, account_name)); if (num_records == 0) { DEBUG(3,("Couldn't find user [%s] in samdb.\n", @@ -130,7 +177,8 @@ static NTSTATUS dcesrv_netr_ServerAuthenticate3(struct dcesrv_call_state *dce_ca DEBUG(1, ("Client asked for a workstation secure channel, but is not a workstation (member server) acb flags: 0x%x\n", user_account_control)); return NT_STATUS_ACCESS_DENIED; } - } else if (r->in.secure_channel_type == SEC_CHAN_DOMAIN) { + } else if (r->in.secure_channel_type == SEC_CHAN_DOMAIN || + r->in.secure_channel_type == SEC_CHAN_DNS_DOMAIN) { if (!(user_account_control & UF_INTERDOMAIN_TRUST_ACCOUNT)) { DEBUG(1, ("Client asked for a trusted domain secure channel, but is not a trusted domain: acb flags: 0x%x\n", user_account_control)); |