diff options
| -rw-r--r-- | source3/libsmb/credentials.c | 32 | ||||
| -rw-r--r-- | source3/rpc_server/srv_netlog_nt.c | 17 |
2 files changed, 42 insertions, 7 deletions
diff --git a/source3/libsmb/credentials.c b/source3/libsmb/credentials.c index 0d521bae8a..322b25ee43 100644 --- a/source3/libsmb/credentials.c +++ b/source3/libsmb/credentials.c @@ -208,8 +208,36 @@ BOOL deal_with_creds(uchar sess_key[8], DEBUG(5,("deal_with_creds: clnt_cred=%s\n", credstr(sto_clnt_cred->challenge.data))); - /* store new seed in client credentials */ - SIVAL(sto_clnt_cred->challenge.data, 0, new_cred); + /* Bug #2953 - don't store new seed in client credentials + here, because we need to make sure we're moving forward first + */ return True; } + +/* + stores new seed in client credentials + jmcd - Bug #2953 - moved this functionality out of deal_with_creds, because we're + not supposed to move to the next step in the chain if a nonexistent user tries to logon +*/ +void reseed_client_creds(DOM_CRED *sto_clnt_cred, DOM_CRED *rcv_clnt_cred) +{ + UTIME new_clnt_time; + uint32 new_cred; + + /* increment client time by one second */ + new_clnt_time.time = rcv_clnt_cred->timestamp.time + 1; + + /* first 4 bytes of the new seed is old client 4 bytes + clnt time + 1 */ + new_cred = IVAL(sto_clnt_cred->challenge.data, 0); + new_cred += new_clnt_time.time; + + DEBUG(5,("reseed_client_creds: new_cred[0]=%x\n", new_cred)); + DEBUG(5,("reseed_client_creds: new_clnt_time=%x\n", + new_clnt_time.time)); + DEBUG(5,("reseed_client_creds: clnt_cred=%s\n", + credstr(sto_clnt_cred->challenge.data))); + + /* store new seed in client credentials */ + SIVAL(sto_clnt_cred->challenge.data, 0, new_cred); +} diff --git a/source3/rpc_server/srv_netlog_nt.c b/source3/rpc_server/srv_netlog_nt.c index 7880a724b5..0af8b14fe2 100644 --- a/source3/rpc_server/srv_netlog_nt.c +++ b/source3/rpc_server/srv_netlog_nt.c @@ -449,6 +449,7 @@ NTSTATUS _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET * if (!(p->dc.authenticated && deal_with_creds(p->dc.sess_key, &p->dc.clnt_cred, &q_u->clnt_id.cred, &srv_cred))) return NT_STATUS_INVALID_HANDLE; + reseed_client_creds(&p->dc.clnt_cred, &q_u->clnt_id.cred); memcpy(&p->dc.srv_cred, &p->dc.clnt_cred, sizeof(p->dc.clnt_cred)); DEBUG(5,("_net_srv_pwset: %d\n", __LINE__)); @@ -545,6 +546,8 @@ NTSTATUS _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOF &q_u->sam_id.client.cred, &srv_cred))) return NT_STATUS_INVALID_HANDLE; + /* what happens if we get a logoff for an unknown user? */ + reseed_client_creds(&p->dc.clnt_cred, &q_u->sam_id.client.cred); memcpy(&p->dc.srv_cred, &p->dc.clnt_cred, sizeof(p->dc.clnt_cred)); /* XXXX maybe we want to say 'no', reject the client's credentials */ @@ -603,11 +606,6 @@ NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON * if (!(p->dc.authenticated && deal_with_creds(p->dc.sess_key, &p->dc.clnt_cred, &q_u->sam_id.client.cred, &srv_cred))) return NT_STATUS_INVALID_HANDLE; - memcpy(&p->dc.srv_cred, &p->dc.clnt_cred, sizeof(p->dc.clnt_cred)); - - r_u->buffer_creds = 1; /* yes, we have valid server credentials */ - memcpy(&r_u->srv_creds, &srv_cred, sizeof(r_u->srv_creds)); - /* find the username */ switch (q_u->sam_id.logon_level) { @@ -719,6 +717,15 @@ NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON * return status; } + /* moved from right after deal_with_creds above, since we weren't + supposed to update unless logon was successful */ + + reseed_client_creds(&p->dc.clnt_cred, &q_u->sam_id.client.cred); + memcpy(&p->dc.srv_cred, &p->dc.clnt_cred, sizeof(p->dc.clnt_cred)); + + r_u->buffer_creds = 1; /* yes, we have valid server credentials */ + memcpy(&r_u->srv_creds, &srv_cred, sizeof(r_u->srv_creds)); + if (server_info->guest) { /* We don't like guest domain logons... */ DEBUG(5,("_net_sam_logon: Attempted domain logon as GUEST denied.\n")); |