From 89d32b9120ed7de9fe5283abc537b21bd0b8bde9 Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Sun, 10 Nov 2019 22:35:25 +0000 Subject: Add a Content-Security-Policy HTTP header that allows only CSS. This ensures that in a modern browser that understands the header, mandoc rendering bugs cannot possibly be interpreted as JavaScript. Patch from bentley@. --- cgi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'cgi.c') diff --git a/cgi.c b/cgi.c index 18b9379e..6487bdcb 100644 --- a/cgi.c +++ b/cgi.c @@ -1,4 +1,4 @@ -/* $Id: cgi.c,v 1.168 2019/10/01 17:54:14 schwarze Exp $ */ +/* $Id: cgi.c,v 1.169 2019/11/10 22:35:25 schwarze Exp $ */ /* * Copyright (c) 2011, 2012 Kristaps Dzonsons * Copyright (c) 2014-2019 Ingo Schwarze @@ -340,6 +340,8 @@ resp_begin_http(int code, const char *msg) printf("Content-Type: text/html; charset=utf-8\r\n" "Cache-Control: no-cache\r\n" + "Content-Security-Policy: default-src 'none'; " + "style-src 'self' 'unsafe-inline'\r\n" "Pragma: no-cache\r\n" "\r\n"); -- cgit v1.2.3