Bug 680771 - Send X-XSS-Protection header for XSS prevention/blocking

[r=mkanat a=LpSolit]

diff --git a/Bugzilla/CGI.pm b/Bugzilla/CGI.pm
index a16ae6686573ccc288aebb6b5f949a977720174c..4dd223a3108aeabd1c546385bd6ab139356f67f0 100644 (file)
--- a/Bugzilla/CGI.pm
+++ b/Bugzilla/CGI.pm
@@ -316,6 +316,10 @@ sub header {
         unshift(@_, '-x_frame_options' => 'SAMEORIGIN');
     }
 
+    # Add X-XSS-Protection header to prevent simple XSS attacks
+    # and enforce the blocking (rather than the rewriting) mode.
+    unshift(@_, '-x_xss_protection' => '1; mode=block');
+
     # Add X-Content-Type-Options header to prevent browsers sniffing
     # the MIME type away from the declared Content-Type.
     unshift(@_, '-x_content_type_options' => 'nosniff');