Hi,

we had to reduce the ciphers on our servers to the really limited set of
KRB5-RC4-MD5
KRB5-RC4-SHA
ADH-RC4-MD5
RC4-SHA
to work around this really annoying windows update.

Gerfried

On Fri, Feb 24, 2012, Tammany, Curtis wrote:

> Hello-
> 
> We have a Apache 2.2.22/ OpenSSL 1.0.0g/ PHP 5.3.10 CAC-enabled website on a 
> government location. We have a few users with Windows 7/IE8 who used to be 
> able to access the site but were unable to after a Microsoft patch (KB2585542 
> http://support.microsoft.com/kb/2643584 )was pushed.
> 
> The server has the following configuration:
> SSLProtocol -all +SSLv3 +TLSv1
> SSLCipherSuite HIGH:MEDIUM
> SSLHonorCipherOrder on
> 
> My understanding is that the server should listen for either SSLv3 or TLSv1 
> protocols.
> 
> I've been working with a Windows7/ IE8 box to troubleshoot the situation. It 
> seems I can access the Apache site if SSL 3.0 only is enabled in the browser. 
> If TLS 1.0 is enabled, the browser will prompt for a client certificate but 
> will error out "Internet explorer cannot display the webpage" before 
> prompting the user for their PIN. TLS 1.0 needs to be enabled in the browser 
> as other (IIS) sites are TLS only.
> 
> Can you offer any insight as to why our Apache site is accessible with only 
> SSL 3.0 enabled in the browser????
> 
> If you need more information on the issue, please let me know.
> 
> 

Check to see if there is a corresponding error message in the server log.

If possible try to reproduce with the s_server utility.

I've an idea what this might be. Try disabling RSA key exchange ciphersuites on 
the server too (adding :!kRSA to SSLCipherSuite) and see if that resolves the 
problem.

Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org 
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