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(svn r2899) -Fix: Several format string vulnerabilities and buffer overflows in the network code

This commit is contained in:
tron 2005-08-28 12:24:57 +00:00
parent 70c07d13be
commit d975abc96c
5 changed files with 13 additions and 13 deletions
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2
console_cmds.c
View File

@ -1132,7 +1132,7 @@ DEF_CONSOLE_HOOK(ConProcPlayerName)
SEND_COMMAND(PACKET_CLIENT_SET_NAME)(_network_player_name);
} else {
if (NetworkFindName(_network_player_name)) {
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, _network_player_name);
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, "%s", _network_player_name);
ttd_strlcpy(ci->client_name, _network_player_name, sizeof(ci->client_name));
NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
}

4
network.c
View File

@ -100,7 +100,7 @@ void CDECL NetworkTextMessage(NetworkAction action, uint16 color, bool self_send
char temp[1024];
va_start(va, str);
vsprintf(buf, str, va);
vsnprintf(buf, lengthof(buf), str, va);
va_end(va);
switch (action) {
@ -499,7 +499,7 @@ void NetworkCloseClient(NetworkClientState *cs)
GetString(str, STR_NETWORK_ERR_CLIENT_GENERAL + errorno);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, "%s", str);
// Inform other clients of this... strange leaving ;)
FOR_ALL_CLIENTS(new_cs) {

8
network_client.c
View File

@ -349,7 +349,7 @@ DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CLIENT_INFO)
if (ci != NULL) {
if (playas == ci->client_playas && strcmp(name, ci->client_name) != 0) {
// Client name changed, display the change
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, name);
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, "%s", name);
} else if (playas != ci->client_playas) {
// The player changed from client-player..
// Do not display that for now
@ -666,7 +666,7 @@ DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_ERROR_QUIT)
ci = NetworkFindClientInfoFromIndex(index);
if (ci != NULL) {
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, ci->client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, ci->client_name, "%s", str);
// The client is gone, give the NetworkClientInfo free
ci->client_index = NETWORK_EMPTY_INDEX;
@ -684,11 +684,11 @@ DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_QUIT)
NetworkClientInfo *ci;
index = NetworkRecv_uint16(MY_CLIENT, p);
NetworkRecv_string(MY_CLIENT, p, str, 100);
NetworkRecv_string(MY_CLIENT, p, str, lengthof(str));
ci = NetworkFindClientInfoFromIndex(index);
if (ci != NULL) {
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, ci->client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, ci->client_name, "%s", str);
// The client is gone, give the NetworkClientInfo free
ci->client_index = NETWORK_EMPTY_INDEX;

10
network_server.c
View File

@ -162,7 +162,7 @@ DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR)(NetworkClientState *cs, Netwo
DEBUG(net, 2)("[NET] %s made an error (%s) and his connection is closed", client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, "%s", str);
FOR_ALL_CLIENTS(new_cs) {
if (new_cs->status > STATUS_AUTH && new_cs != cs) {
@ -904,7 +904,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_ERROR)
DEBUG(net, 2)("[NET] %s reported an error and is closing his connection (%s)", client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, "%s", str);
FOR_ALL_CLIENTS(new_cs) {
if (new_cs->status > STATUS_AUTH) {
@ -929,11 +929,11 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_QUIT)
return;
}
NetworkRecv_string(cs, p, str, 100);
NetworkRecv_string(cs, p, str, lengthof(str));
NetworkGetClientName(client_name, sizeof(client_name), cs);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, str);
NetworkTextMessage(NETWORK_ACTION_LEAVE, 1, false, client_name, "%s", str);
FOR_ALL_CLIENTS(new_cs) {
if (new_cs->status > STATUS_AUTH) {
@ -1108,7 +1108,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_SET_NAME)
if (ci != NULL) {
// Display change
if (NetworkFindName(client_name)) {
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, client_name);
NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, "%s", client_name);
ttd_strlcpy(ci->client_name, client_name, sizeof(ci->client_name));
NetworkUpdateClientInfo(ci->client_index);
}

2
texteff.c
View File

@ -62,7 +62,7 @@ void CDECL AddTextMessage(uint16 color, uint8 duration, const char *message, ...
int length;
va_start(va, message);
vsprintf(buf, message, va);
vsnprintf(buf, lengthof(buf), message, va);
va_end(va);
/* Special color magic */