Hello,

I faced the same issue.
Actually, client authentication has been disabled on recent versions. It
has nothing to do with your configuration.

See (on my blog):
http://www.phocean.net/2009/11/28/openssl-cve-2009-3555-security-fix-and-mod_ssl-client-authentication-breakage.html
and then :
http://www.phocean.net/2010/01/09/ssltls-rfc-updated-against-cve-2009-3555.html

Regards,

-- 
Jean-Christophe Baptiste <j...@phocean.net>


Le mardi 19 janvier 2010 à 16:53 -0600, aa...@cs.wisc.edu a écrit :
> I'm trying to go through the most basic tutorials on mod_ssl and I'm
> having a problem trying to get my server to issue a certificate request
> for a particular URL.  I'm listing my Apache and OpenSSL version
> information.
> 
> # httpd -v
> Server version: Apache/2.2.14 (Unix)
> Server built:   Dec  3 2009 10:25:53
> 
> # openssl version
> OpenSSL 1.0.0-fips-beta4 10 Nov 2009
> 
> I've followed the steps of this tutorial:
> 
> http://www.vanemery.com/Linux/Apache/apache-SSL.html
> 
> I've also tried to follow the SSL HowTo on the Apache site:
> 
> http://httpd.apache.org/docs/2.2/ssl/ssl_howto.html
> 
> I'll try to get at the heart of the issue.  If I have the following in my
> ssl.conf file in the VirtualHost section
> 
> SSLVerifyClient require
> SSLVerifyDepth 1
> 
> then everything works as expected.  I have the client certificate
> installed in my client web browser, and when I click on the link to my
> https server, which is https://myserver, then it prompts me to get the
> certificate of the server and confirm a security exception, and also
> prompts me with a user identification request, at which point I can chose
> a certificate to identify the client to my server.  I see my index.html
> page, which has a link to the directory https://myserver/Certneeded.  I
> can click on this directory and see a list of the files in that directory.
> 
> However, if I change my ssl.conf in an attempt to "force clients to
> authenticate using certificates for a particular URL, but still allow
> arbitrary clients to access the rest of the server", as per the Apache
> HowTo, then I never get prompted for this "user identification request" to
> which I can identify my client web browser to the server.
> 
> In this case, my ssl.conf file changes to the following.
> 
> SSLVerifyClient none
> <Location /Certneeded>
>         Options Indexes
>         SSLVerifyClient require
>         SSLVerifyDepth 1
> </Location>
> 
> Now, when I click on the link to https://myserver/Certneeded, the client
> browser just hangs until a timeout is reached, I'm never prompted to
> present a certificate for identification, and the contents of the
> directory are not listed.
> 
> In Wireshark, I see a client hello, followed by a server hello, followed
> by a change cipher spec, presumably because I was never prompted for an
> identification certificate by the server within a set time.
> 
> In the "good" case, when my "SSLVerifyClient require" statement is in the
> VirtualHost section of the ssl.conf file, in Wireshark, I see a client
> hello, followed by a server hello, followed by a "certificate, server key
> exchange, certificate request", which seems to be where the window pops up
> in my client prompting me with a user identification request.
> 
> In trying to debug this, I noticed that if I do a hack and revert back to
> an earlier RPM version of openssl, openssl-0.9.8g-11.fc10.i386.rpm, that
> both configurations (per-server and per-directory contexts) work as
> expected.  What might be wrong here?
> 
> Aaron
> 
> 
> ______________________________________________________________________
> Apache Interface to OpenSSL (mod_ssl)                   www.modssl.org
> User Support Mailing List                      modssl-users@modssl.org
> Automated List Manager                            majord...@modssl.org

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