A flaw was found in node.js, where it did not properly handle multi-value Relative Distinguished Names. This flaw allows a specially crafted x509 certificate to produce a false multi-value Relative Distinguished Name and to inject arbitrary data in node.js libraries.
It was found that node.js did not safely read the x509 certificate generalName format properly, resulting in data injection. A certificate could use a specially crafted extension in order to be successfully validated, permitting an attacker to impersonate a trusted host.
A flaw was found in node.js where it accepted a certificate's Subject Alternative Names (SAN) entry, as opposed to what is specified by the HTTPS protocol. This flaw allows an active person-in-the-middle to forge a certificate and impersonate a trusted host.