1 files changed, 12 insertions, 0 deletions
diff --git a/rt/bin/mason_handler.scgi b/rt/bin/mason_handler.scgi
index 5cbb9a30f..83649edaf 100755
--- a/rt/bin/mason_handler.scgi
+++ b/rt/bin/mason_handler.scgi
@@ -57,6 +57,18 @@ require (dirname(__FILE__) . '/webmux.pl');
 require CGI;
 
 my $cgi = CGI->new;
+
+# 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();
+
+    return 0;
+}
+
 if ( ( !$Handler->interp->comp_exists( $cgi->path_info ) )
     && ( $Handler->interp->comp_exists( $cgi->path_info . "/index.html" ) ) ) {
     $cgi->path_info( $cgi->path_info . "/index.html" );