freebsd stable - Jun 2015 - [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:08.sendmail

> > Did you (re)generate your dh.params file as noted in the Workaround
section?
> 
> No, because of this text under Solution:
> "
> A change to the raise the default for sendmail client connections to
> 1024-bit DH parameters has been committed.
> "
> 
> As I understand it this would remove the need for generating
> the dh.params file?
You do not need to regenerate dh.params with the patch unless you have
specifically set DHParameters in /etc/mail/sendmail.cf to a lower
strength.  What is the output of:

grep DHParam /etc/mail/sendmail.cf

If it is set to a string beginning with '5' or a filename and that
file was generated using 512-bit strength, then remove that setting.

On Thu, Jun 18, 2015 at 08:10:33AM -0700, Gregory Shapiro
wrote:
> > > Did you (re)generate your dh.params file as noted in the
Workaround section?
> > 
> > No, because of this text under Solution:
> > "
> > A change to the raise the default for sendmail client connections to
> > 1024-bit DH parameters has been committed.
> > "
> > 
> > As I understand it this would remove the need for generating
> > the dh.params file?
> 
> You do not need to regenerate dh.params with the patch unless you have
> specifically set DHParameters in /etc/mail/sendmail.cf to a lower
> strength.  What is the output of:
> 
> grep DHParam /etc/mail/sendmail.cf
> 
> If it is set to a string beginning with '5' or a filename and that
> file was generated using 512-bit strength, then remove that setting.
I never changed or generated anything in the mail configuration
on these servers, they use the default mc/cf files:

$ grep DHParam /etc/mail/sendmail.cf
# DHParameters (only required if DSA/DH is used)
O DHParameters=/etc/mail/certs/dh.param

$ ls -l /etc/mail/certs
total 12
lrwxr-xr-x  1 root  wheel    10 31 Aug  2014 4bc0b037.0 -> cacert.pem
-rw-r--r--  1 root  wheel  1326 31 Aug  2014 cacert.pem
-rw-r--r--  1 root  wheel  1375 31 Aug  2014 host.cert
-rw-------  1 root  wheel  1704 31 Aug  2014 host.key

Peter Olsson