diff options
Diffstat (limited to 'auth/gensec/spnego.c')
| -rw-r--r-- | auth/gensec/spnego.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/auth/gensec/spnego.c b/auth/gensec/spnego.c index 565d5a975bf..c4b7efbed76 100644 --- a/auth/gensec/spnego.c +++ b/auth/gensec/spnego.c @@ -511,7 +511,11 @@ static NTSTATUS gensec_spnego_client_negTokenInit_start( } n->mech_idx = 0; - n->mech_types = spnego_in->negTokenInit.mechTypes; + + /* Do not use server mech list as it isn't protected. Instead, get all + * supported mechs (excluding SPNEGO). */ + n->mech_types = gensec_security_oids(gensec_security, n, + GENSEC_OID_SPNEGO); if (n->mech_types == NULL) { return NT_STATUS_INVALID_PARAMETER; } @@ -658,13 +662,30 @@ static NTSTATUS gensec_spnego_client_negTokenInit_finish( DATA_BLOB *out) { struct spnego_data spnego_out; - const char *my_mechs[] = {NULL, NULL}; + const char * const *mech_types = NULL; bool ok; - my_mechs[0] = spnego_state->neg_oid; + if (n->mech_types == NULL) { + DBG_WARNING("No mech_types list\n"); + return NT_STATUS_INVALID_PARAMETER; + } + + for (mech_types = n->mech_types; *mech_types != NULL; mech_types++) { + int cmp = strcmp(*mech_types, spnego_state->neg_oid); + + if (cmp == 0) { + break; + } + } + + if (*mech_types == NULL) { + DBG_ERR("Can't find selected sub mechanism in mech_types\n"); + return NT_STATUS_INVALID_PARAMETER; + } + /* compose reply */ spnego_out.type = SPNEGO_NEG_TOKEN_INIT; - spnego_out.negTokenInit.mechTypes = my_mechs; + spnego_out.negTokenInit.mechTypes = mech_types; spnego_out.negTokenInit.reqFlags = data_blob_null; spnego_out.negTokenInit.reqFlagsPadding = 0; spnego_out.negTokenInit.mechListMIC = data_blob_null; @@ -676,7 +697,7 @@ static NTSTATUS gensec_spnego_client_negTokenInit_finish( } ok = spnego_write_mech_types(spnego_state, - my_mechs, + mech_types, &spnego_state->mech_types); if (!ok) { DBG_ERR("failed to write mechTypes\n"); |