How to Buy
This script is Copyright (C) 2010-2015 Tenable Network Security, Inc.
The SSL certificate for this service cannot be trusted.
The server's X.509 certificate does not have a signature from a known
public certificate authority. This situation can occur in three
different ways, each of which results in a break in the chain below
which certificates cannot be trusted.
First, the top of the certificate chain sent by the server might not
be descended from a known public certificate authority. This can
occur either when the top of the chain is an unrecognized, self-signed
certificate, or when intermediate certificates are missing that would
connect the top of the certificate chain to a known public certificate
Second, the certificate chain may contain a certificate that is not
valid at the time of the scan. This can occur either when the scan
occurs before one of the certificate's 'notBefore' dates, or after one
of the certificate's 'notAfter' dates.
Third, the certificate chain may contain a signature that either
didn't match the certificate's information, or could not be verified.
Bad signatures can be fixed by getting the certificate with
the bad signature to be re-signed by its issuer. Signatures that
could not be verified are the result of the certificate's issuer using
a signing algorithm that Nessus either does not support or does not
If the remote host is a public host in production, any break in the
chain makes it more difficult for users to verify the authenticity and
identity of the web server. This could make it easier to carry out
man-in-the-middle attacks against the remote host.
Purchase or generate a proper certificate for this service.
Risk factor :
Medium / CVSS Base Score : 6.4
Nessus Plugin ID: 51192 ()
Nessus Professional: Scan unlimited IPs, run compliance checks & moreNessus Cloud: The power of Nessus for teams – from the cloud
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