Forum OpenACS Q&A: Re: RFC: Security policy for OpenACS (Security hole in OpenACS 5.1!)
I propose a separate security forum, that is only for security updates and warnings. I know nobody likes having separate forums because it can fragment conversations, but the advantage is that nobody should have to follow any of the other forums if they only want security updates. And security updates are pretty manditory.
You don't need to disable all HTML, Kjell, just not allow * for HTML.
Is this something that the OCT is willing to discuss and make some decisions about?
If a remote page (called B) contains an img tag that GETs a URL on your site (called A), you GET this page on B, then you'll issue a GET request to your resource on A as well - with your credentials on A.
So HTML parsing WON'T solve this problem.
(However disallowing * will significantly reduce risk)