dotnet-security-guard.github.io/SG0004.htm at master · dotnet-security-guard/dotnet-security-guard.github.io · GitHub

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  <title>Certificate Validation has been disabled - Roslyn Security Guard</title>
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        <h2>Certificate Validation has been disabled</h2>
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<p>
    Certificate Validation has been disabled. The communication could be intercepted.
</p>

<h3>Risk</h3>

<p>
    Disabling certificate validation is often used to connect easily to a host that is not signed by a root
    <a href="http://en.wikipedia.org/wiki/Certificate_authority">certificate authority</a>. As a consequence, this is vulnerable to
    <a href="http://en.wikipedia.org/wiki/Man-in-the-middle_attack">Man-in-the-middle attacks</a>
    since the client will trust any certificate.
</p>

<h3>Vulnerable Code</h3>

<pre>
    ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
</pre>

<h3>Solution</h3>

Using sign certificate.

<!--
    TODO
    https://forums.asp.net/p/1957866/5588946.aspx#5593221
    -->

<h3>References</h3>

<p>
    <a href="http://projects.webappsec.org/w/page/13246945/Insufficient%20Transport%20Layer%20Protection">WASC-04: Insufficient Transport Layer Protection</a><br/>
    <a href="http://cwe.mitre.org/data/definitions/295.html">CWE-295: Improper Certificate Validation</a>
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