Show HN: Does it use Cloudflare? | Hacker News Reader

Show HN: Does it use Cloudflare?

doesitusecloudflare.com

This doesn't detect Cloudflare CNAME clients.

For ex. It says uber.com is not vulnerable - because the homepage isn't, while the app is consitantly one of the most impacted in the caches I've seen

I don't think anyone has really nailed the methodology here - and I think that is important (as is erring towards false positives rather than false negatives) for security mitigation advice

It's not that easy. Not all CNAME clients used the three services that had the issue.

These lists are bad, because they list any Cloudflare clients that can be found, not just the ones that might have had exposed data.

Why was this flagged? Can HN offer a mouse over description to answer these types of questions? just curious

Individual users have the ability to flag posts (after a certain karma, I think) and there's no place to provide a reason.

To elaborate, flags are (nearly?) always the result of user action, not mods.

Does this use live data? Would a site be positive even if it, after the publication of Cloudbleed, migrated away from Cloudfare?

"Live" is somewhat misleading here: the leaks are out there, in crawler caches. Do you consider such source "live", even though it is no longer leaking data?

I think that's exactly what the commenter was getting at. "Live" data would be deficient in this instance, historical data would be better.

I'd be interested both 'does it use' and 'did it use cloudflare' (in the affected period).

otherwise :

dig website.com +short | head -n1 | xargs -- whois | grep -q cloudflare

doesn't work with my setup, whois on cloudflare domains do not inlcude the string "cloudflare". This works tho:

  dig website.com +short |  grep -q cloudflare

Dang, this one's probably going to be more popular than mine.

http://cloudbleed.surge.sh

Of course, mine isn't exactly performant, was the result of about 15 minutes of work, and just uses that Github repo with the list of affected domains (so, not exactly the most comprehensive). But hey, it was fun to build.

My jekyll based static site hosted on Github Pages uses cloudflare for https. Saying that my site is compromised by CloudBleed is a bit too much.

http://www.doesitusecloudflare.com/?url=www.stacktoheap.com

But it is compromised.... this is literally the only use case in which you can get comprimised. If you put your _http_ page behind cloudlfare https

if it's public static content what exactly has been compromised?

IP addresses of visitors? Depending on the site or visitor, that could be theoretically a compromise.

But the parent comment is untrue. Cloudflare will have unencrypted data in memory at some point, even if it's encrypted coming and going. This is how they eliminate the scary browser message about self-signed certificates, ironically.

They have a (more expensive) version that encrypts all the way to your own edge.

Well it probably just checks if the given domain uses CloudFlare and reports compromised if positive.

Chances are it is. The difference being that the leaked data in your case could not have been sensitive.

This is at about 38 upvotes ATM, and I believe it may not be killed for anybody's whims after that. It's tech-related, actual, and liked by the community here (not that is of particular interest to me but still).

I was literally just saying to someone that this sort of tool needed to be made. Good job!

Doesn't detect Reddit, which I understand to be affected?

Reddit is somewhat complicated. Their main IPs appear to be the Fastly CDN. This post[1] shows they used Cloudflare at some point, but only for users that had ticked a specific box. The post is a bit old, so I'm unclear if that's still the current setup.

[1]https://thenextweb.com/insider/2014/09/08/reddit-launches-fu...

According to one of the reddit engineers, they stopped using Cloudflare prior to when this issue started.

https://www.reddit.com/r/programming/comments/5vtv16/cloudfl...

Time to move to Incapsula

news.ycombinator.com ... OMG!

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