title: How to fix CA certification problems with Ubuntu?
body: <p>I installed Ubuntu 13.04 one week ago and I'm facing a serious issue which causes chained problems.</p>
  
  <p>The main issue is <strong>CA certification</strong> and/or <strong>CA bundle</strong> stuff.</p>
  
  <p>Honestly, I'm not very clear about these concepts.</p>
  
  <p>All I can guess is it's related to <code>cURL</code> and <code>openssl</code>. </p>
  
  <p>But whenever I try to install <strong>RVM</strong>, whenever I try to install <strong>Heroku Toolbelt</strong> and whenever I try to connect programmatically to a site which has <strong>SSL</strong>; I see errors.</p>
  
  <p>One of them is :
  <code>Unable to locally verify the issuer's authority.</code></p>
  
  <p>Another one is:
  <code>curl: (60) SSL certificate problem, verify that the CA cert is OK</code></p>
  
  <p>I think this is an essential issue which influces any new installation of Ubuntu. Is this correct?</p>
  
  <p>I've been googling since days... I couldn't find a certain solution. I downloaded <code>cacert.pem</code>  and copied to <code>/usr/share/ca-certificates</code> and some other places... And then I edited something like ca-certicate.conf. But I'm lost. I think *nix world needs a clean answer to this.</p>
  
  <p>I don't remember that I had got this error until my last installation. So at the moment, this issue is a black hole for me.</p>
  
  <p>So,</p>
  
  <h3>Can someone please explain what is this CA certification problem with CURL and how to fix it on Ubuntu?</h3>
  
  <p>Note: I didn't ask this at askubuntu.com because I think issue is not Ubuntu specific.</p>