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IMG loaded from HSTS domain on non-HTTPS site breaks site


HSTS on Amazon CloudFront from S3 originConfigure Apache to send HSTS header only in virtual hosts using HTTPSHSTS secured domain migrationIdeally, how should HSTS / SSL Everywhere / Let's encrypt work with captive Wifi portals?HSTS with canonical URL redirect in nginxUsing HSTS with Sub Domain ForwardingNginx - HSTS and Redirect non-www to wwwApache: HSTS redirection on non-standard HTTP port causes SSL errorHSTS: Is includeSubDomains on main domain sufficient?HSTS issues when redirecting to www. sub domain






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








0















Would HSTS cause an entire site (browser) to redirect to its HTTPS counterpart if a single (or more) resource from an HSTS domain was inserted into a HTTP site - e.g. through an 'img' tag?



We have http://subdomain.example.com loading an image from http(s)://www.example.com and then, incorrectly, http://subdomain.example.com redirects to http(s)://subdomain.example.com (causing the page to essentially break - it doesn't load at all) when the image is loaded. If we remove the image from the HTML the site functions correctly.



Is this expected behaviour and the essence of HSTS?



Note: we see www.example.com and example.com in the browser HSTS cache/store when the site loads the image. Clearing this causes the site to work fine, but subsequent reloads of the page then break (assuming because the browser has identified the HSTS once, and subsequent calls will then redirect following the HSTS policy/nature).










share|improve this question
























  • That depends. What have you set the headers to?

    – Michael Hampton
    May 10 at 3:09











  • Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

    – Kinnectus
    May 10 at 4:29











  • Yes, that would do it.

    – Michael Hampton
    May 10 at 4:30











  • I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

    – Kinnectus
    May 10 at 4:36

















0















Would HSTS cause an entire site (browser) to redirect to its HTTPS counterpart if a single (or more) resource from an HSTS domain was inserted into a HTTP site - e.g. through an 'img' tag?



We have http://subdomain.example.com loading an image from http(s)://www.example.com and then, incorrectly, http://subdomain.example.com redirects to http(s)://subdomain.example.com (causing the page to essentially break - it doesn't load at all) when the image is loaded. If we remove the image from the HTML the site functions correctly.



Is this expected behaviour and the essence of HSTS?



Note: we see www.example.com and example.com in the browser HSTS cache/store when the site loads the image. Clearing this causes the site to work fine, but subsequent reloads of the page then break (assuming because the browser has identified the HSTS once, and subsequent calls will then redirect following the HSTS policy/nature).










share|improve this question
























  • That depends. What have you set the headers to?

    – Michael Hampton
    May 10 at 3:09











  • Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

    – Kinnectus
    May 10 at 4:29











  • Yes, that would do it.

    – Michael Hampton
    May 10 at 4:30











  • I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

    – Kinnectus
    May 10 at 4:36













0












0








0








Would HSTS cause an entire site (browser) to redirect to its HTTPS counterpart if a single (or more) resource from an HSTS domain was inserted into a HTTP site - e.g. through an 'img' tag?



We have http://subdomain.example.com loading an image from http(s)://www.example.com and then, incorrectly, http://subdomain.example.com redirects to http(s)://subdomain.example.com (causing the page to essentially break - it doesn't load at all) when the image is loaded. If we remove the image from the HTML the site functions correctly.



Is this expected behaviour and the essence of HSTS?



Note: we see www.example.com and example.com in the browser HSTS cache/store when the site loads the image. Clearing this causes the site to work fine, but subsequent reloads of the page then break (assuming because the browser has identified the HSTS once, and subsequent calls will then redirect following the HSTS policy/nature).










share|improve this question
















Would HSTS cause an entire site (browser) to redirect to its HTTPS counterpart if a single (or more) resource from an HSTS domain was inserted into a HTTP site - e.g. through an 'img' tag?



We have http://subdomain.example.com loading an image from http(s)://www.example.com and then, incorrectly, http://subdomain.example.com redirects to http(s)://subdomain.example.com (causing the page to essentially break - it doesn't load at all) when the image is loaded. If we remove the image from the HTML the site functions correctly.



Is this expected behaviour and the essence of HSTS?



Note: we see www.example.com and example.com in the browser HSTS cache/store when the site loads the image. Clearing this causes the site to work fine, but subsequent reloads of the page then break (assuming because the browser has identified the HSTS once, and subsequent calls will then redirect following the HSTS policy/nature).







hsts






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited May 10 at 3:13









Michael Hampton

178k27322655




178k27322655










asked May 10 at 1:37









KinnectusKinnectus

235110




235110












  • That depends. What have you set the headers to?

    – Michael Hampton
    May 10 at 3:09











  • Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

    – Kinnectus
    May 10 at 4:29











  • Yes, that would do it.

    – Michael Hampton
    May 10 at 4:30











  • I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

    – Kinnectus
    May 10 at 4:36

















  • That depends. What have you set the headers to?

    – Michael Hampton
    May 10 at 3:09











  • Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

    – Kinnectus
    May 10 at 4:29











  • Yes, that would do it.

    – Michael Hampton
    May 10 at 4:30











  • I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

    – Kinnectus
    May 10 at 4:36
















That depends. What have you set the headers to?

– Michael Hampton
May 10 at 3:09





That depends. What have you set the headers to?

– Michael Hampton
May 10 at 3:09













Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

– Kinnectus
May 10 at 4:29





Thanks for the reply. I haven't set the headers but a quick look at the domain on a HSTS checker has a clue "includeSubDomains".

– Kinnectus
May 10 at 4:29













Yes, that would do it.

– Michael Hampton
May 10 at 4:30





Yes, that would do it.

– Michael Hampton
May 10 at 4:30













I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

– Kinnectus
May 10 at 4:36





I had an epiphany to check that, in the middle of the night, when I was up tending to one of my kids who decided to wake up at 2am... Thank you for your quick responses

– Kinnectus
May 10 at 4:36










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