When loading TeX.SX over TLS (e.g. Force equal hinting when combining symbols) with HTTPS Everywhere, images are not displayed.

Firefox shows this error (e.g. for https://i.stack.imgur.com/k1rDN.png):

An error occurred during a connection to i.stack.imgur.com. Peer reports it experienced an internal error. (Error code: ssl_error_internal_error_alert)

  • Can you please hit this URL and paste the result? Your specific IP isn't necessary, you can remove that piece. i.stack.imgur.com/cdn-cgi/trace – Nick Craver Oct 28 '15 at 22:01
  • Is this what is causing all SE hosted avatars to fail to load in chat? – ɥʇǝS Oct 28 '15 at 22:02
  • @NickCraver All of i.stack.imgur.com is returning: "i.stack.imgur.com uses an invalid security certificate. The certificate is only valid for ssl330558.cloudflaressl.com (Error code: ssl_error_bad_cert_domain)" – Mysticial Oct 28 '15 at 22:07
  • 2
    Certificate presented doesn't belong to i.stack.imgur.com (issued only to ssl330558.cloudflaressl.com, no alternate names) and both image URLs and that trace thing result in 403. – Cat Plus Plus Oct 28 '15 at 22:07
  • You can try with http only, @Mysticial – Oded Oct 28 '15 at 22:08
  • @NickCraver: With http (https gives a 403): fl=48f8 h=i.stack.imgur.com ts=1446070144.771 visit_scheme=http uag=Mozilla/5.0 (X11; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0 colo=DUS spdy=off loc=DE – Martin Schröder Oct 28 '15 at 22:10
  • @Oded my school appears to disallow imgur.com simply because of the lack of TSL (or similar). Is this fixable by you? / is it an unrelated problem? – Tim Oct 28 '15 at 22:17
  • @NickCraver I get similar - fl=21f130 h=i.stack.imgur.com ts=1446070560.828 visit_scheme=https uag=Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36 colo=LHR spdy=3.1 loc=GB And can see the image he linked... – Tim Oct 28 '15 at 22:18
  • @Tim - if they block imgur.com (note that we are on a subdomain i.stack.imgur.com), that is not something we can help with :( – Oded Oct 28 '15 at 22:19
  • Hmm when I'm back there in a week I'll speak to them. I seem to remember a TLS error (???) but not sure. This seems like an unrelated problem tho i guess. – Tim Oct 28 '15 at 22:20
  • @MartinSchröder Is this fixed for you? It's all fine for me... And has been for the whole day. – Tim Oct 28 '15 at 22:20
  • Oh, so that's why some images have trouble displaying suddenly. I'm not even browsing via HTTPS... – AStopher Oct 28 '15 at 22:39
  • @NickCraver broken for me as well (over HTTP): fl=63f12 h=i.stack.imgur.com ts=1446071939.274 visit_scheme=http uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2547.0 Safari/537.36 colo=MAN spdy=off loc=GB – ᔕᖺᘎᕊ Oct 28 '15 at 22:39
  • @NickCraver I get a certificate error with that: i.imgur.com/wjWAiec.png. Looks like an issue with Cloudflare again. Man, SE's had so many problems with them lately.. – AStopher Oct 28 '15 at 22:41
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    Thanks for the reports everyone - we're prodding CloudFlare who's in front of i.stack.imgur.com and has incorrect certificates in some colos. It's not directly our account, but hosted in behalf of imgur for us so resolving takes a bit more time. We'll get them to correct the cert issue ASAP. – Nick Craver Oct 28 '15 at 22:43

This was a certificate fail on the CloudFlare side on the Imgur account hosted on our behalf. We're still awaiting info on what exactly happened, but since it's not directly our account we may not get this information.

The fix should be rolling out shortly around the world - we prodded both sides to have new certs issues ASAP and we are now seeing valid certificates in most locations (our New York sysamins aren't seeing it yet).

New cert details

  • Valid From: Tuesday, October 27, 2015 at 8:00:00 PM EDT
  • Valid To: Thursday, October 27, 2016 at 7:59:59 PM EDT
  • SHA1: 96 BD DF 71 49 F8 C6 D9 A8 6E 2D E1 D3 5D 2F 00 6A 90 0C ED
  • MD5: 90 13 A3 FD B5 61 F4 B5 E9 8D DC 8B D7 9D BE C5
  • SAN entries:
    • i.stack.imgur.com
    • imgur.cloudflaressl.com
  • 1
    See you all again next year guys! – Tim Oct 29 '15 at 18:32

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