1 files changed, 11 insertions, 0 deletions
diff --git a/rt/bin/mason_handler.svc.in b/rt/bin/mason_handler.svc.in
index 2cbf4357a..119b110db 100644
--- a/rt/bin/mason_handler.svc.in
+++ b/rt/bin/mason_handler.svc.in
@@ -234,6 +234,17 @@ $Handler ||= RT::Interface::Web::Handler->new(
 while( my $cgi = CGI::Fast->new ) {
     my $comp = $ENV{'PATH_INFO'};
 
+    # Each environment has its own way of handling .. and so on in paths,
+    # so RT consistently forbids such paths.
+    if ( $cgi->path_info =~ m{/\.} ) {
+        $RT::Logger->crit("Invalid request for ".$cgi->path_info." aborting");
+        print STDOUT "HTTP/1.0 400\r\n\r\n";
+
+        RT::Interface::Web::Handler->CleanupRequest();
+
+        next;
+    }
+
     $comp = $1 if ($comp =~ /^(.*)$/);
     my $web_path = RT->Config->Get('WebPath');
     $comp =~ s|^\Q$web_path\E\b||i;