Registration via rhnreg_ks returns an SSL error

Issue

• I tried to run the rhnreg_ks command but I am getting the following SSL failed message:

An error has occurred:
The SSL certificate failed verification.
See /var/log/up2date for more information

This is the log:
[Tue Feb 26 13:22:05 2013] up2date 
Traceback (most recent call last):
  File "/usr/sbin/rhnreg_ks", line 219, in <module>
    cli.run()
  File "/usr/share/rhn/up2date_client/rhncli.py", line 84, in run
    sys.exit(self.main() or 0)
  File "/usr/sbin/rhnreg_ks", line 89, in main
    rhnreg.getCaps()
  File "/usr/share/rhn/up2date_client/rhnreg.py", line 249, in getCaps
    s.capabilities.validate()
  File "/usr/share/rhn/up2date_client/rhnserver.py", line 160, in __get_capabilities
    self.registration.welcome_message()
  File "/usr/share/rhn/up2date_client/rhnserver.py", line 68, in __call__
    raise up2dateErrors.SSLCertificateVerifyFailedError()
<class 'up2date_client.up2dateErrors.SSLCertificateVerifyFailedError'>: The SSL certificate failed verification.