This breaks some of the tools we're developing, although in our case it's harder to fix because it's Javascript we're inserting.
I understand the security concerns though. Any advice on a more secure way to allow particular content? Perhaps a whitelist of allowed scripts? On Wed, Feb 1, 2012 at 23:58, Cory Spencer <cspen...@sprocket.org> wrote: > > On 2012-02-01, at 1:33 PM, Dannon Baker wrote: > > > With Galaxy's toolbox at hand you could generate invalid HTML from plain > text components. A simple example, but consider the following: > > > > Upload one plain text file with the content: > > <script > > > > .... > > > > Change the type of this dataset to html and there's your attack. If you > tried to upload this, we'd interpret it as malicious HTML and discard it. > As separate datasets, it's impossible to tell. Given Galaxy's powerful > text manipulation tools you could write just about whatever you wanted > using Galaxy itself and get it in the system as a (seemingly) valid > tool-generated dataset. Now, with the outbound sanitation on any dataset > served as "text/html" it doesn't matter and it gets handled prior to > serving. > > Okay, I follow you there. That's a good example, thank you! > > > Another option we discussed would be to trust all tool generated HTML, > disallow changing the datatype of anything *to* html, and so on, but that > approach comes with its own problems. > > In the case of the tool we're working on, this option is probably what > would have worked best. > > >> If anything, would it be possible to make this sort of sanitization > controllable via a configuration file option? > > > > I'm rather hesitant to put in a disable option for a security feature, > though you're more than welcome to pop those two lines out of your > instance. I think the best path forward is probably relaxing the filter a > bit, the initial pass was somewhat draconian. Would relaxing the filter to > allow style content to pass through work for your needs? > > Yes, we've already commented it out for the time being. :) Relaxing the > filter would be a good improvement so far as we're concerned. I'd be happy > to keep in contact with you during the process so that we can find the > happy middle ground between security and usability. > > Thanks again! > > Cory > ___________________________________________________________ > Please keep all replies on the list by using "reply all" > in your mail client. To manage your subscriptions to this > and other Galaxy lists, please use the interface at: > > http://lists.bx.psu.edu/ > -- Computational Biology Group University of Cape Town South Africa
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