diff options
| -rw-r--r-- | source4/rpc_server/drsuapi/getncchanges.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/source4/rpc_server/drsuapi/getncchanges.c b/source4/rpc_server/drsuapi/getncchanges.c index 5c378e50de..50de087662 100644 --- a/source4/rpc_server/drsuapi/getncchanges.c +++ b/source4/rpc_server/drsuapi/getncchanges.c @@ -32,6 +32,7 @@ #include "libcli/security/security.h" #include "lib/util/binsearch.h" #include "lib/util/tsort.h" +#include "auth/session.h" /* build a DsReplicaObjectIdentifier from a ldb msg @@ -699,6 +700,7 @@ WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_ uint32_t max_objects; struct ldb_dn *search_dn = NULL; bool am_rodc; + enum security_user_level security_level; DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE); b_state = h->data; @@ -749,7 +751,24 @@ WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_ return WERR_DS_DRA_SOURCE_DISABLED; } - if (req8->replica_flags & DRSUAPI_DRS_WRIT_REP) { + /* for non-administrator replications, check that they have + given the correct source_dsa_invocation_id */ + security_level = security_session_user_level(dce_call->conn->auth_state.session_info); + + if (security_level < SECURITY_ADMINISTRATOR) { + /* validate their guid */ + ret = dsdb_validate_invocation_id(b_state->sam_ctx, + &req8->source_dsa_invocation_id, + dce_call->conn->auth_state.session_info->security_token->user_sid); + if (ret != LDB_SUCCESS) { + DEBUG(0,(__location__ ": Attempted replication with invalid invocationId %s\n", + GUID_string(mem_ctx, &req8->source_dsa_invocation_id))); + return WERR_DS_DRA_INVALID_PARAMETER; + } + } + + if (security_level < SECURITY_ADMINISTRATOR && + (req8->replica_flags & DRSUAPI_DRS_WRIT_REP)) { bool is_rodc; ret = samdb_is_rodc(b_state->sam_ctx, &req8->source_dsa_invocation_id, &is_rodc); if (ret != LDB_SUCCESS || is_rodc) { |