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Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

bugs.chromium.org

421–430 of 1001 posts

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#421

Can anyone ELI5 what's going on?

Change all your passwords. Many sites use Cloudflare to serve secure content, and it was recently discovered that Cloudflare has been leaking secure content, including passwords, API tokens, etc. to unintended viewers.

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#422
post #4

Oh, my god. Read the whole event log. If you were behind Cloudflare and it was proxying sensitive data (the contents of HTTP POSTs, &c), they've potentially been spraying it into caches all across the Internet; it was so bad that Tavis found it by accident just looking through Google search results. The crazy thing here is that the Project Zero people were joking last night about a disclosure that was going to keep e…

It is far from over, too! Google Cache still has loads of sensitive information, a link away! Look at this, click on the downward arrow, "Cached": https://www.google.com/search?q="CF-Host-Origin-IP:"+"author... (And then, in Google Cache, "view source", search for "authorization".) (Various combinations of HTTP headers to search for yield more results.)

>It is a snapshot of the page as it appeared on Feb 21, 2017 20:20:45 GMT

So the issue wasn't fully fixed on Feb 19, or Google's cache date isn't accurate?

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#424
post #345

What's the rationale behind sending user PII through a CDN? Presumably that is useful to that one user only so a CDN wouldn't be super useful in distributing the load across its edges. Also doesn't CDN caching kinda defeat the purpose of having SSL?

Cloudflare terminates SSL and then forwards the request to your servers as one of their services. This isn't about the CDN, but about them terminating SSL, then leaking the plaintext data back through other requests.

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#426
One of the reasons I prefer paying with Bitcoin over credit card, is that when using cryptocurrency I don't have to give them they key to my account - instead they give me an inbox that I send the value into.

Guessing a lot of credit card details are ripe for picking in the data they leaked.

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#427

Earlier quoted context omitted.

One of my Uber rides two weeks ago went completely nuts. Both my and my drivers app screwed up at the same time and I was never picked up and then seconds later the app claimed I reached my destination. You have to wonder whether something like this is implicated.

Probably not. If someone knew about this exploit they're not going to be messing with people's Uber rides for lulz.

I wasn't implying intention.

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#428

Earlier quoted context omitted.

One of my Uber rides two weeks ago went completely nuts. Both my and my drivers app screwed up at the same time and I was never picked up and then seconds later the app claimed I reached my destination. You have to wonder whether something like this is implicated.

That's one phenomenal leap of logic there. Why would you think that?

Merely that both my and the drivers app screwed up at the same time, and have a good chance of hitting the same Uber end-point.

Apps that consume APIs would be more sensitive to unexpected junk than browsers.

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#429

Can we start a list of affected right now? I found: OKCupid Uber people claiming 1Password, can't find Reddit Lyft Yelp Pingdom Digital Ocean Montecito Bank and Trust

Is your list "customers of cloudflare" or "customers of cloudflare that could have sensitive data cached by search engines"

For example, Digital Ocean uses cloudflare, but the domain with sensitive data (cloud.digitalocean.com) is entirely blocked from Search Engines https://cloud.digitalocean.com/robots.txt

Re: Cloudflare Reverse Proxies Are Dumping Uninitialized Memory

#430

Earlier quoted context omitted.

Connecting some dots, I'm wondering if the "well-known chat service" is Slack: http://www.computing.co.uk/ctg/news/2462266/whatsapp-reddit-...

I'm fairly sure that it's Discord.

Yes, I found some leaked data referencing Discord still in Google's cache so I'd say it's them.
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