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SECURITY: Fixed a message handling bug which could crash the daemon.
Some message targets could lead to a NULL pointer dereference and therefore could crash the daemon (denial of service). (cherry picked from commit e493ad2d30ff80bca2556cde2212e367cb006517)
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@ -397,7 +397,7 @@ Send_Message(CLIENT * Client, REQUEST * Req, int ForceType, bool SendErrors)
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for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
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if (Client_Type(cl) != CLIENT_USER)
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continue;
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if (nick != NULL) {
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if (nick != NULL && host != NULL) {
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if (strcmp(nick, Client_ID(cl)) == 0 &&
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strcmp(user, Client_User(cl)) == 0 &&
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strcasecmp(host, Client_Hostname(cl)) == 0)
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