dns.cgi: Fixes bug 13892

Fixes: bug 13892 - dns.cgi TLS_HOSTNAME Stored Cross-Site Scripting
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/html/cgi-bin/dns.cgi b/html/cgi-bin/dns.cgi
index 0d3b14797a6e930284550fc31693b93a9874f571..a4f1c719e63933374822bd55a6c808f729eda322 100644 (file)
--- a/html/cgi-bin/dns.cgi
+++ b/html/cgi-bin/dns.cgi
@@ -2,7 +2,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2005-2024  IPFire Team  <info@ipfire.org>                     #
+# Copyright (C) 2005-2025  IPFire Team  <info@ipfire.org>                     #
 #                                                                             #
 # This program is free software: you can redistribute it and/or modify        #
 # it under the terms of the GNU General Public License as published by        #
@@ -187,6 +187,7 @@ if (($cgiparams{'SERVERS'} eq $Lang::tr{'save'}) || ($cgiparams{'SERVERS'} eq $L
                }
 
                # Add/Modify the entry to/in the dns_servers hash.
+               $cgiparams{'TLS_HOSTNAME'} = &Header::escape($cgiparams{'TLS_HOSTNAME'});
                $dns_servers{$id} = ["$cgiparams{'NAMESERVER'}", "$cgiparams{'TLS_HOSTNAME'}", "$status", "$cgiparams{'REMARK'}"];
 
                # Write the changed hash to the config file.