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-rw-r--r--source4/auth/auth.h6
-rw-r--r--source4/auth/ntlm/auth.c25
-rw-r--r--source4/auth/ntlm/auth_proto.h2
-rw-r--r--source4/auth/ntlm/auth_server.c7
-rw-r--r--source4/auth/ntlm/auth_util.c12
-rw-r--r--source4/auth/ntlm/auth_winbind.c6
-rw-r--r--source4/auth/ntlmssp/ntlmssp_server.c7
-rw-r--r--source4/smb_server/smb/negprot.c5
8 files changed, 32 insertions, 38 deletions
diff --git a/source4/auth/auth.h b/source4/auth/auth.h
index c31ed2f5fd..c625c87f39 100644
--- a/source4/auth/auth.h
+++ b/source4/auth/auth.h
@@ -135,7 +135,7 @@ struct auth_operations {
* security=server, and makes a number of compromises to allow
* that. It is not compatible with being a PDC. */
- NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge);
+ NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8]);
/* Given the user supplied info, check if this backend want to handle the password checking */
@@ -190,7 +190,7 @@ struct auth_context {
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info);
- NTSTATUS (*get_challenge)(struct auth_context *auth_ctx, const uint8_t **_chal);
+ NTSTATUS (*get_challenge)(struct auth_context *auth_ctx, uint8_t chal[8]);
bool (*challenge_may_be_modified)(struct auth_context *auth_ctx);
@@ -226,7 +226,7 @@ struct ldb_context;
struct ldb_dn;
struct gensec_security;
-NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, const uint8_t **_chal);
+NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, uint8_t chal[8]);
NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
struct ldb_context *sam_ctx,
uint32_t logon_parameters,
diff --git a/source4/auth/ntlm/auth.c b/source4/auth/ntlm/auth.c
index 5520c9d01f..d0c8ed3a68 100644
--- a/source4/auth/ntlm/auth.c
+++ b/source4/auth/ntlm/auth.c
@@ -51,42 +51,34 @@ bool auth_challenge_may_be_modified(struct auth_context *auth_ctx)
Try to get a challenge out of the various authentication modules.
Returns a const char of length 8 bytes.
****************************************************************************/
-_PUBLIC_ NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, const uint8_t **_chal)
+_PUBLIC_ NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, uint8_t chal[8])
{
NTSTATUS nt_status;
struct auth_method_context *method;
- if (auth_ctx->challenge.data.length) {
+ if (auth_ctx->challenge.data.length == 8) {
DEBUG(5, ("auth_get_challenge: returning previous challenge by module %s (normal)\n",
auth_ctx->challenge.set_by));
- *_chal = auth_ctx->challenge.data.data;
+ memcpy(chal, auth_ctx->challenge.data.data, 8);
return NT_STATUS_OK;
}
for (method = auth_ctx->methods; method; method = method->next) {
- DATA_BLOB challenge = data_blob(NULL,0);
-
- nt_status = method->ops->get_challenge(method, auth_ctx, &challenge);
+ nt_status = method->ops->get_challenge(method, auth_ctx, chal);
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NOT_IMPLEMENTED)) {
continue;
}
NT_STATUS_NOT_OK_RETURN(nt_status);
- if (challenge.length != 8) {
- DEBUG(0, ("auth_get_challenge: invalid challenge (length %u) by mothod [%s]\n",
- (unsigned)challenge.length, method->ops->name));
- return NT_STATUS_INTERNAL_ERROR;
- }
-
- auth_ctx->challenge.data = challenge;
+ auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
+ NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
auth_ctx->challenge.set_by = method->ops->name;
break;
}
if (!auth_ctx->challenge.set_by) {
- uint8_t chal[8];
generate_random_buffer(chal, 8);
auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
@@ -99,7 +91,6 @@ _PUBLIC_ NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, const uint8_
DEBUG(10,("auth_get_challenge: challenge set by %s\n",
auth_ctx->challenge.set_by));
- *_chal = auth_ctx->challenge.data.data;
return NT_STATUS_OK;
}
@@ -256,7 +247,7 @@ _PUBLIC_ void auth_check_password_send(struct auth_context *auth_ctx,
/* if all the modules say 'not for me' this is reasonable */
NTSTATUS nt_status;
struct auth_method_context *method;
- const uint8_t *challenge;
+ uint8_t chal[8];
struct auth_usersupplied_info *user_info_tmp;
struct auth_check_password_request *req = NULL;
@@ -283,7 +274,7 @@ _PUBLIC_ void auth_check_password_send(struct auth_context *auth_ctx,
DEBUGADD(3,("auth_check_password_send: mapped user is: [%s]\\[%s]@[%s]\n",
user_info->mapped.domain_name, user_info->mapped.account_name, user_info->workstation_name));
- nt_status = auth_get_challenge(auth_ctx, &challenge);
+ nt_status = auth_get_challenge(auth_ctx, chal);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("auth_check_password_send: Invalid challenge (length %u) stored for this auth context set_by %s - cannot continue: %s\n",
(unsigned)auth_ctx->challenge.data.length, auth_ctx->challenge.set_by, nt_errstr(nt_status)));
diff --git a/source4/auth/ntlm/auth_proto.h b/source4/auth/ntlm/auth_proto.h
index 572c1a4ca7..5e8c725ea0 100644
--- a/source4/auth/ntlm/auth_proto.h
+++ b/source4/auth/ntlm/auth_proto.h
@@ -23,7 +23,7 @@ NTSTATUS server_service_auth_init(void);
/* The following definitions come from auth/ntlm/auth_util.c */
-NTSTATUS auth_get_challenge_not_implemented(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge);
+NTSTATUS auth_get_challenge_not_implemented(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8]);
/****************************************************************************
Create an auth_usersupplied_data structure after appropriate mapping.
diff --git a/source4/auth/ntlm/auth_server.c b/source4/auth/ntlm/auth_server.c
index 12849aa420..ae7b7dd3a8 100644
--- a/source4/auth/ntlm/auth_server.c
+++ b/source4/auth/ntlm/auth_server.c
@@ -40,7 +40,7 @@ static NTSTATUS server_want_check(struct auth_method_context *ctx,
/**
* The challenge from the target server, when operating in security=server
**/
-static NTSTATUS server_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
+static NTSTATUS server_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8])
{
struct smb_composite_connect io;
struct smbcli_options smb_options;
@@ -88,7 +88,10 @@ static NTSTATUS server_get_challenge(struct auth_method_context *ctx, TALLOC_CTX
ctx->auth_ctx->event_ctx);
NT_STATUS_NOT_OK_RETURN(status);
- *_blob = io.out.tree->session->transport->negotiate.secblob;
+ if (io.out.tree->session->transport->negotiate.secblob.length != 8) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ memcpy(chal, io.out.tree->session->transport->negotiate.secblob.data, 8);
ctx->private_data = talloc_steal(ctx, io.out.tree->session);
return NT_STATUS_OK;
}
diff --git a/source4/auth/ntlm/auth_util.c b/source4/auth/ntlm/auth_util.c
index 5543cbebea..92df0bfe80 100644
--- a/source4/auth/ntlm/auth_util.c
+++ b/source4/auth/ntlm/auth_util.c
@@ -29,7 +29,7 @@
/* this default function can be used by mostly all backends
* which don't want to set a challenge
*/
-NTSTATUS auth_get_challenge_not_implemented(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge)
+NTSTATUS auth_get_challenge_not_implemented(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8])
{
/* we don't want to set a challenge */
return NT_STATUS_NOT_IMPLEMENTED;
@@ -122,7 +122,7 @@ NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_contex
}
case AUTH_PASSWORD_HASH:
{
- const uint8_t *challenge;
+ uint8_t chal[8];
DATA_BLOB chall_blob;
user_info_temp = talloc(mem_ctx, struct auth_usersupplied_info);
if (!user_info_temp) {
@@ -134,12 +134,12 @@ NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_contex
*user_info_temp = *user_info_in;
user_info_temp->mapped_state = to_state;
- nt_status = auth_get_challenge(auth_context, &challenge);
+ nt_status = auth_get_challenge(auth_context, chal);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
- chall_blob = data_blob_talloc(mem_ctx, challenge, 8);
+ chall_blob = data_blob_talloc(mem_ctx, chal, 8);
if (lp_client_ntlmv2_auth(auth_context->lp_ctx)) {
DATA_BLOB names_blob = NTLMv2_generate_names_blob(mem_ctx, lp_netbios_name(auth_context->lp_ctx), lp_workgroup(auth_context->lp_ctx));
DATA_BLOB lmv2_response, ntlmv2_response, lmv2_session_key, ntlmv2_session_key;
@@ -162,12 +162,12 @@ NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_contex
data_blob_free(&ntlmv2_session_key);
} else {
DATA_BLOB blob = data_blob_talloc(mem_ctx, NULL, 24);
- SMBOWFencrypt(user_info_in->password.hash.nt->hash, challenge, blob.data);
+ SMBOWFencrypt(user_info_in->password.hash.nt->hash, chal, blob.data);
user_info_temp->password.response.nt = blob;
if (lp_client_lanman_auth(auth_context->lp_ctx) && user_info_in->password.hash.lanman) {
DATA_BLOB lm_blob = data_blob_talloc(mem_ctx, NULL, 24);
- SMBOWFencrypt(user_info_in->password.hash.lanman->hash, challenge, blob.data);
+ SMBOWFencrypt(user_info_in->password.hash.lanman->hash, chal, blob.data);
user_info_temp->password.response.lanman = lm_blob;
} else {
/* if not sending the LM password, send the NT password twice */
diff --git a/source4/auth/ntlm/auth_winbind.c b/source4/auth/ntlm/auth_winbind.c
index 568226dd87..173a895390 100644
--- a/source4/auth/ntlm/auth_winbind.c
+++ b/source4/auth/ntlm/auth_winbind.c
@@ -271,7 +271,7 @@ static NTSTATUS winbind_check_password(struct auth_method_context *ctx,
s->req.in.logon.password= password_info;
} else {
struct netr_NetworkInfo *network_info;
- const uint8_t *challenge;
+ uint8_t chal[8];
status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_RESPONSE,
user_info, &user_info_new);
@@ -281,10 +281,10 @@ static NTSTATUS winbind_check_password(struct auth_method_context *ctx,
network_info = talloc(s, struct netr_NetworkInfo);
NT_STATUS_HAVE_NO_MEMORY(network_info);
- status = auth_get_challenge(ctx->auth_ctx, &challenge);
+ status = auth_get_challenge(ctx->auth_ctx, chal);
NT_STATUS_NOT_OK_RETURN(status);
- memcpy(network_info->challenge, challenge, sizeof(network_info->challenge));
+ memcpy(network_info->challenge, chal, sizeof(network_info->challenge));
network_info->nt.length = user_info->password.response.nt.length;
network_info->nt.data = user_info->password.response.nt.data;
diff --git a/source4/auth/ntlmssp/ntlmssp_server.c b/source4/auth/ntlmssp/ntlmssp_server.c
index 94de920772..281ffbfa6d 100644
--- a/source4/auth/ntlmssp/ntlmssp_server.c
+++ b/source4/auth/ntlmssp/ntlmssp_server.c
@@ -600,9 +600,12 @@ NTSTATUS ntlmssp_server_auth(struct gensec_security *gensec_security,
static const uint8_t *auth_ntlmssp_get_challenge(const struct gensec_ntlmssp_state *gensec_ntlmssp_state)
{
NTSTATUS status;
- const uint8_t *chal;
+ uint8_t *chal = talloc_array(gensec_ntlmssp_state, uint8_t, 8);
+ if (!chal) {
+ return NULL;
+ }
- status = gensec_ntlmssp_state->auth_context->get_challenge(gensec_ntlmssp_state->auth_context, &chal);
+ status = gensec_ntlmssp_state->auth_context->get_challenge(gensec_ntlmssp_state->auth_context, chal);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("auth_ntlmssp_get_challenge: failed to get challenge: %s\n",
nt_errstr(status)));
diff --git a/source4/smb_server/smb/negprot.c b/source4/smb_server/smb/negprot.c
index ab763e39c3..fe6cd68f6e 100644
--- a/source4/smb_server/smb/negprot.c
+++ b/source4/smb_server/smb/negprot.c
@@ -33,7 +33,6 @@
static NTSTATUS get_challenge(struct smbsrv_connection *smb_conn, uint8_t buff[8])
{
NTSTATUS nt_status;
- const uint8_t *challenge;
/* muliple negprots are not premitted */
if (smb_conn->negotiate.auth_context) {
@@ -53,14 +52,12 @@ static NTSTATUS get_challenge(struct smbsrv_connection *smb_conn, uint8_t buff[8
return nt_status;
}
- nt_status = auth_get_challenge(smb_conn->negotiate.auth_context, &challenge);
+ nt_status = auth_get_challenge(smb_conn->negotiate.auth_context, buff);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("auth_get_challenge() returned %s", nt_errstr(nt_status)));
return nt_status;
}
- memcpy(buff, challenge, 8);
-
return NT_STATUS_OK;
}
generated by cgit (git 2.34.1) at 2024-11-23 03:51:17 +0000