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-rw-r--r--source3/include/rpc_dce.h4
-rw-r--r--source3/rpc_client/cli_pipe.c24
-rw-r--r--source3/rpc_parse/parse_rpc.c20
-rw-r--r--source3/rpc_server/srv_pipe.c15
4 files changed, 45 insertions, 18 deletions
diff --git a/source3/include/rpc_dce.h b/source3/include/rpc_dce.h
index 8266fc861f..0df903109d 100644
--- a/source3/include/rpc_dce.h
+++ b/source3/include/rpc_dce.h
@@ -63,7 +63,9 @@ enum RPC_PKT_TYPE
#define NETSEC_AUTH_TYPE 0x44
#define NETSEC_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
#define NETSEC_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
-#define RPC_AUTH_NETSEC_CHK_LEN 0x20
+
+#define RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN 0x20
+#define RPC_AUTH_NETSEC_SIGN_ONLY_CHK_LEN 0x18
/* The 7 here seems to be required to get Win2k not to downgrade us
to NT4. Actually, anything other than 1ff would seem to do... */
diff --git a/source3/rpc_client/cli_pipe.c b/source3/rpc_client/cli_pipe.c
index df0d37a463..b24dbb7d25 100644
--- a/source3/rpc_client/cli_pipe.c
+++ b/source3/rpc_client/cli_pipe.c
@@ -332,13 +332,24 @@ static BOOL rpc_auth_pipe(struct cli_state *cli, prs_struct *rdata,
if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) {
RPC_AUTH_NETSEC_CHK chk;
- if (auth_len != RPC_AUTH_NETSEC_CHK_LEN) {
+ if ( (auth_len != RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN)
+ && (auth_len != RPC_AUTH_NETSEC_SIGN_ONLY_CHK_LEN) )
+ {
DEBUG(0,("rpc_auth_pipe: wrong schannel auth len %d\n", auth_len));
return False;
}
- if (!smb_io_rpc_auth_netsec_chk("schannel_auth_sign",
- &chk, &auth_verf, 0)) {
+ /* can't seal with no nonce */
+ if ( (cli->pipe_auth_flags & AUTH_PIPE_SEAL)
+ && (auth_len != RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN) )
+ {
+ DEBUG(0,("rpc_auth_pipe: sealing not supported with schannel auth len %d\n", auth_len));
+ return False;
+ }
+
+
+ if (!smb_io_rpc_auth_netsec_chk("schannel_auth_sign", auth_len, &chk, &auth_verf, 0))
+ {
DEBUG(0, ("rpc_auth_pipe: schannel unmarshalling "
"RPC_AUTH_NETSECK_CHK failed\n"));
return False;
@@ -918,7 +929,7 @@ BOOL rpc_api_pipe_req(struct cli_state *cli, uint8 op_num,
auth_len = RPC_AUTH_NTLMSSP_CHK_LEN;
}
if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) {
- auth_len = RPC_AUTH_NETSEC_CHK_LEN;
+ auth_len = RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN;
}
auth_hdr_len = RPC_HDR_AUTH_LEN;
}
@@ -1034,8 +1045,9 @@ BOOL rpc_api_pipe_req(struct cli_state *cli, uint8 op_num,
/* write auth footer onto the packet */
parse_offset_marker = prs_offset(&sec_blob);
- if (!smb_io_rpc_auth_netsec_chk("", &verf,
- &sec_blob, 0)) {
+ if (!smb_io_rpc_auth_netsec_chk("", RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN,
+ &verf, &sec_blob, 0))
+ {
prs_mem_free(&sec_blob);
return False;
}
diff --git a/source3/rpc_parse/parse_rpc.c b/source3/rpc_parse/parse_rpc.c
index 69262b6d0c..f4ffcba1bd 100644
--- a/source3/rpc_parse/parse_rpc.c
+++ b/source3/rpc_parse/parse_rpc.c
@@ -1189,7 +1189,8 @@ BOOL smb_io_rpc_auth_netsec_neg(const char *desc, RPC_AUTH_NETSEC_NEG *neg,
/*******************************************************************
reads or writes an RPC_AUTH_NETSEC_CHK structure.
********************************************************************/
-BOOL smb_io_rpc_auth_netsec_chk(const char *desc, RPC_AUTH_NETSEC_CHK * chk,
+BOOL smb_io_rpc_auth_netsec_chk(const char *desc, int auth_len,
+ RPC_AUTH_NETSEC_CHK * chk,
prs_struct *ps, int depth)
{
if (chk == NULL)
@@ -1198,10 +1199,19 @@ BOOL smb_io_rpc_auth_netsec_chk(const char *desc, RPC_AUTH_NETSEC_CHK * chk,
prs_debug(ps, depth, desc, "smb_io_rpc_auth_netsec_chk");
depth++;
- prs_uint8s(False, "sig ", ps, depth, chk->sig, sizeof(chk->sig));
- prs_uint8s(False, "seq_num", ps, depth, chk->seq_num, sizeof(chk->seq_num));
- prs_uint8s(False, "packet_digest", ps, depth, chk->packet_digest, sizeof(chk->packet_digest));
- prs_uint8s(False, "confounder", ps, depth, chk->confounder, sizeof(chk->confounder));
+ if ( !prs_uint8s(False, "sig ", ps, depth, chk->sig, sizeof(chk->sig)) )
+ return False;
+
+ if ( !prs_uint8s(False, "seq_num", ps, depth, chk->seq_num, sizeof(chk->seq_num)) )
+ return False;
+
+ if ( !prs_uint8s(False, "packet_digest", ps, depth, chk->packet_digest, sizeof(chk->packet_digest)) )
+ return False;
+
+ if ( auth_len == RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN ) {
+ if ( !prs_uint8s(False, "confounder", ps, depth, chk->confounder, sizeof(chk->confounder)) )
+ return False;
+ }
return True;
}
diff --git a/source3/rpc_server/srv_pipe.c b/source3/rpc_server/srv_pipe.c
index 3a4e085276..13d894d2d8 100644
--- a/source3/rpc_server/srv_pipe.c
+++ b/source3/rpc_server/srv_pipe.c
@@ -124,7 +124,7 @@ BOOL create_next_pdu(pipes_struct *p)
if(p->ntlmssp_auth_validated) {
data_space_available -= (RPC_HDR_AUTH_LEN + RPC_AUTH_NTLMSSP_CHK_LEN);
} else if(p->netsec_auth_validated) {
- data_space_available -= (RPC_HDR_AUTH_LEN + RPC_AUTH_NETSEC_CHK_LEN);
+ data_space_available -= (RPC_HDR_AUTH_LEN + RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN);
}
/*
@@ -177,8 +177,8 @@ BOOL create_next_pdu(pipes_struct *p)
} else if (p->netsec_auth_validated) {
p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
data_len + ss_padding_len +
- RPC_HDR_AUTH_LEN + RPC_AUTH_NETSEC_CHK_LEN;
- p->hdr.auth_len = RPC_AUTH_NETSEC_CHK_LEN;
+ RPC_HDR_AUTH_LEN + RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN;
+ p->hdr.auth_len = RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN;
} else {
p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
p->hdr.auth_len = 0;
@@ -309,7 +309,8 @@ BOOL create_next_pdu(pipes_struct *p)
SENDER_IS_ACCEPTOR,
&verf, data, data_len + ss_padding_len);
- smb_io_rpc_auth_netsec_chk("", &verf, &outgoing_pdu, 0);
+ smb_io_rpc_auth_netsec_chk("", RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN,
+ &verf, &outgoing_pdu, 0);
p->netsec_auth.seq_num++;
}
@@ -1339,7 +1340,7 @@ BOOL api_pipe_netsec_process(pipes_struct *p, prs_struct *rpc_in)
auth_len = p->hdr.auth_len;
- if (auth_len != RPC_AUTH_NETSEC_CHK_LEN) {
+ if (auth_len != RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN) {
DEBUG(0,("Incorrect auth_len %d.\n", auth_len ));
return False;
}
@@ -1384,7 +1385,9 @@ BOOL api_pipe_netsec_process(pipes_struct *p, prs_struct *rpc_in)
return False;
}
- if(!smb_io_rpc_auth_netsec_chk("", &netsec_chk, rpc_in, 0)) {
+ if(!smb_io_rpc_auth_netsec_chk("", RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN,
+ &netsec_chk, rpc_in, 0))
+ {
DEBUG(0,("failed to unmarshal RPC_AUTH_NETSEC_CHK.\n"));
return False;
}
generated by cgit (git 2.34.1) at 2024-07-07 13:05:35 +0000