From 1dab9e230f80b62d5327d44afbcb71cd51f38682 Mon Sep 17 00:00:00 2001
From: Randy Sommerfeld <cyan@synchro.net>
Date: Fri, 18 Jun 2021 12:56:52 +0700
Subject: [PATCH] Reject malformed NICK messages from servers and notify
---
exec/load/ircd/server.js | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/exec/load/ircd/server.js b/exec/load/ircd/server.js
index 8d14e8b3d8..f390a8f123 100644
--- a/exec/load/ircd/server.js
+++ b/exec/load/ircd/server.js
@@ -602,6 +602,15 @@ function Server_Work(cmdline) {
));
break;
} else { /* A user changing their nick */
+ if (origin.server) {
+ gnotice(format(
+ "Server %s (origin %s) sent malformed NICK message: %s",
+ this.nick,
+ origin.nick,
+ p.join(" ")
+ ));
+ break;
+ }
tmp = Users[p[0].toUpperCase()];
if (tmp && tmp.nick.toUpperCase() != origin.nick.toUpperCase()) {
gnotice(format(
--
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