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Fix exploit to reset player by sending wrong serverId

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If client sends wrong serverId but is already active in the world
(CS_ACTIVE) don't resend initial gamestate for the map. This isn't a
valid situation. The player should be CS_CONNECTED or CS_PRIMED.

Resending gamestate to an active player will cause them to respawn
without dying or disconnecting. If the player had a CTF flag it gets
lost until the map is changed or restarted.

Reported by Ensiform at:

    https://bugzilla.icculus.org/show_bug.cgi?id=6324
This commit is contained in:
Zack Middleton 2018-04-03 21:14:56 -05:00
parent 1284205012
commit b61e2998f3
1 changed files with 1 additions and 1 deletions
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2
code/server/sv_client.c
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@ -1948,7 +1948,7 @@ void SV_ExecuteClientMessage( client_t *cl, msg_t *msg ) {
} }
// if we can tell that the client has dropped the last // if we can tell that the client has dropped the last
// gamestate we sent them, resend it // gamestate we sent them, resend it
if ( cl->messageAcknowledge > cl->gamestateMessageNum ) { if ( cl->state != CS_ACTIVE && cl->messageAcknowledge > cl->gamestateMessageNum ) {
Com_DPrintf( "%s : dropped gamestate, resending\n", cl->name ); Com_DPrintf( "%s : dropped gamestate, resending\n", cl->name );
SV_SendClientGameState( cl ); SV_SendClientGameState( cl );
} }