Popular:
 Building Resilient Systems on AWS: Learn how to design and implement a resilient, highly available, fault-tolerant infrastructure on AWS.

PHP, SSL, and cURL SSL3_GET_SERVER_CERTIFICATE Errors

By  on  

I recently developed a complex system for a customer that involved PHP, cURL, and a SSL connection to a third party vendor. The third party vendor would validate the security certificate of the source (the system I created) and either allow or reject access. My code looked like this:

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://thirdparty.com/token.php'); //not the actual site
curl_setopt($ch,CURLOPT_TIMEOUT,60);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,'customer_id='.$cid.'&password='.$pass);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,true); 
curl_setopt($ch,CURLOPT_CAINFO,'ca-bundle.crt'); /* problem here! */
$result = curl_exec($ch);
if(empty($result)) { /* error: nothing returned */ } else { /* success! */ }
curl_close($ch);

Unfortunately I was persistently receiving the following error message:

error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

It turns out that the SSL bundle file I was using was old, as was the default bundle that came with the old version of cURL the shared hosting server. Essentially the third party didn't trust that the system's SSL certificate was valid. I downloaded Mozilla's bundle file, named it mozilla.pem and changed my PHP code to: 

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://thirdparty.com/token.php'); //not the actual site
curl_setopt($ch,CURLOPT_TIMEOUT,60);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,'customer_id='.$cid.'&password='.$pass);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,true); 
curl_setopt($ch,CURLOPT_CAINFO,'mozilla.pem'); /* fixed! */
$result = curl_exec($ch);
if(empty($result)) { /* error: nothing returned */ } else { /* success! */ }
curl_close($ch);

I share this with you because it cost me over three hours. Hopefully this will save someone time and frustration in the future.

Website performance monitoring
Website performance monitoring
Website performance monitoring
Website performance monitoring

Recent Features

  • By
    I’m an Impostor

    This is the hardest thing I've ever had to write, much less admit to myself.  I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life.  All of those feelings were very...

  • By
    Responsive Images: The Ultimate Guide

    Chances are that any Web designers using our Ghostlab browser testing app, which allows seamless testing across all devices simultaneously, will have worked with responsive design in some shape or form. And as today's websites and devices become ever more varied, a plethora of responsive images...

Incredible Demos

  • By
    MooTools Font-Size Scroller with Cookie Save

    Providing users as many preferences as possible always puts a smile on the user's face. One of those important preferences is font size. I can see fine but the next guy may have difficulty with the font size I choose. That's why...

  • By
    Create a Download Package Using MooTools Moousture

    Zohaib Sibt-e-Hassan recently released a great mouse gestures library for MooTools called Moousture. Moousture allows you to trigger functionality by moving your mouse in specified custom patterns. Too illustrate Moousture's value, I've created an image download builder using Mooustures and PHP. The XHTML We provide...

Discussion

  1. Paul Radich

    Thanks for sharing. That’s going to same someone a great deal of time.

  2. taylan

    Great post. Thanks…

  3. Bleyder

    “Hopefully this will save someone time and frustration in the future.”

    Yes, it has saved many time to me. There is, however, a point that you don’t explain in your article: where to put the Mozilla’s bundle file? I develop using WAMP, and this is the code I use:

    curl_setopt($rRequest, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($rRequest, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($rRequest, CURLOPT_CAINFO, "C:\path\sub-path\wamp\www\php\mozilla.pem");

    The CURLOPT_SSL_VERIFYHOST option verify that the name field matches the host name of the server.

    More information:
    Using cURL in PHP to access HTTPS (SSL/TLS) protected sites

  4. SomeDude

    I still can’t get mine to work. I’m getting this problem with my Facebook app.

    • Koen

      Dear somedude, did you fix your SSL CURL error that you were experiencing with your Facebook app? I’m experiencing the same thing and cannot get it fixed!

  5. Romain

    Dude, you saved my life! ;o)

  6. az

    Very helpful. Thank you!

  7. rize

    i am getting this now.
    error setting certificate verify locations:

  8. Neelesh

    Thanks david… But I don’t understand How its working for common cert file ,that I downloaded from above link..

  9. Weston

    THANKS YOU SOOOOO MUCH.

    This _did_ save me hours of time!

  10. Alfredo

    David, thank you for saving me three invaluable hours!

  11. ale

    mozilla rocks

    thanks dave

  12. yuvraj jain

    Thanks David, it saved my important hours:). I have faced the same problem and this article solved all the things.

    Keep posting man Thanks again.

  13. Lech

    Thank you for the info and link, but I think what you mean is that *your* system did not trust the third party’s certificate.

  14. Mohamed

    Or you could just turn ssl verification off 

    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,false);
  15. Ferg

    Thank you so much! I only wish I had found this post sooner.

  16. mark

    you can check if both ends use the same ssl version: http://newexception.com/php-curl-https

  17. Abhay

    Hi David,

    Even after updating the certs, I get same error

    I have also set absolute path for the latest crt file

        curl_setopt($ch, CURLOPT_CAPATH, "/path/to/certfile");
    curl_setopt($ch, CURLOPT_CAINFO, "cacert.pem");

    —————-
    successfully set certificate verify locations:
    * CAfile: none
    CApath: /etc/ssl/certs
    * SSL certificate problem, verify that the CA cert is OK. Details:
    error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
    * Closing connection #0
    —————-

  18. Chintan

    Thanks a lot !! It helped me ..

  19. Evan

    Saved me a bunch of time too. Thanks.

  20. sdiver

    Hello, is it secure to put the “cacert.pem” file under the public site directory? Or it’s better to put it out of the web directory?

    Thank you

  21. Ptrol

    Thx! Dude! you save my time!

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!