Re: How to: Check SSL version Numbers remotely

[thomas springer <tuevsec () gmx net>]

I'd like to point out that the THC-Tool and Foundstones Site-Digger
mentioned here are outdated Software that won't support every possible
SSL-Cipher and Protocol.

Some online-tools like dnsstuff.com or csnc.ch are also outdated and
support only a small range of ciphers and protocols.

In fact I know only 2 tools doing a good job:
- Nessus (might require to be linked against a recent(!) and specially
compiled (IDEA-Support) OpenSSL-Lib)
- The SSL-Check at http://www.serversniff.net/content.php?do=ssl (or the
corresponding API-Checks)

I started to put up an ugly and yet unfinished comparison of common
SSL-Check-Software on
http://www.serversniff.de/wiki_en/index.php?title=SSL-Checks in the hope
that this will clarify things and helps understanding the possibilites
of the TLS/SSL-Protocols

Comments or additions are welcome, it's a wiki.

thomas

John Lampe wrote:
> offset wrote:
>
> > Is there a list of all the possible SSL cipher checks somewhere?
> >
> > I noticed that the openssl 'ciphers' manpage has a long list and also
> > shows which
> > ciphers are not implemented by openssl, so I'm curious about the
> > differences between
> > openssl and gnutls in terms of cipher support, or if they overlap, or
> > if there are
> > ssl libs that support ciphers that openssl does not.
> >
> > I noticed that my linux distro doesnt include the patented ciphers
> > (IDEA, MDC2, RC5, EC), so I
> > had to "unhobble" my version of openssl to get more extensive checking.
> >
> > The THCSSLCheck does not check for the NULL cipher, not sure how
> > comprehensive Foundstone's
> > SSLDigger is.
> >
> > In openssl, you can view the ciphers that your version supports via
> > this command
> >
> > openssl ciphers -v 'ALL:eNull'
> >
> > -off
> >
> >  
>
> The Nessus developers here at Tenable have been updating the Nessus
> cipher check.  See
> http://www.nessus.org/plugins/index.php?view=viewsrc&id=21643 .  Of
> course, I'd recommend running all the Nessus SSL plugins, as a strong
> cipher on an insecure implementation can be problematic ;-)
>
> John
>
> ------------------------------------------------------------------------------
>
> This List Sponsored by: Cenzic
>
> Concerned about Web Application Security? Why not go with the #1
> solution - Cenzic, the only one to win the Analyst's Choice Award from
> eWeek. As attacks through web applications continue to rise, you need
> to proactively protect your applications from hackers. Cenzic has the
> most comprehensive solutions to meet your application security
> penetration testing and vulnerability management needs. You have an
> option to go with a managed service (Cenzic ClickToSecure) or an
> enterprise software (Cenzic Hailstorm). Download FREE whitepaper on
> how a managed service can help you:
> http://www.cenzic.com/news_events/wpappsec.php And, now for a limited
> time we can do a FREE audit for you to confirm your results from other
> product. Contact us at request () cenzic com for details.
> ------------------------------------------------------------------------------


------------------------------------------------------------------------------
This List Sponsored by: Cenzic

Concerned about Web Application Security? 
Why not go with the #1 solution - Cenzic, the only one to win the Analyst's 
Choice Award from eWeek. As attacks through web applications continue to rise, 
you need to proactively protect your applications from hackers. Cenzic has the 
most comprehensive solutions to meet your application security penetration 
testing and vulnerability management needs. You have an option to go with a 
managed service (Cenzic ClickToSecure) or an enterprise software 
(Cenzic Hailstorm). Download FREE whitepaper on how a managed service can 
help you: http://www.cenzic.com/news_events/wpappsec.php 
And, now for a limited time we can do a FREE audit for you to confirm your 
results from other product. Contact us at request () cenzic com for details.
------------------------------------------------------------------------------