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Date:      Thu, 1 Aug 2002 08:47:45 -0400 (EDT)
From:      Brian Sneddon <annorax@cereal.rutgers.edu>
To:        stable@FreeBSD.ORG
Subject:   Re: OpenSSL in apache-modssl package
Message-ID:  <Pine.GSO.4.21.0208010844280.28444-100000@cereal.rutgers.edu>
In-Reply-To: <37479.1028201109@thrush.ravenbrook.com>

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Have you tried:

ldd /usr/local/sbin/httpd  (or whereever yours is installed)

This should show you whether it's linked dynamically and if so to which
specific library.


Brian


On Thu, 1 Aug 2002, Nick Barnes wrote:

> I have a machine running 4.6-RELEASE-p2.  I'm upgrading to 4.6-RELENG
> because of the recent flurry of advisories.
> 
> Among other services, I'm running Apache with mod_ssl, installed as a
> package:
> 
>   apache+mod_ssl-1.3.26+2.8.10
>   apache-1.3.26_3
> 
> I'm concerned about this in the light of the recent OpenSSL advisory.
> Can anyone advise me on securing this installation?  I have my own
> musings on the subject, below, but I would like to get a consensus
> answer.
> 
> There doesn't seem to be a more recent mod_ssl package available.
> 
> The mod_ssl site says that the current release is 2.8.10 for Apache
> 1.3.26, which is what I have.
> 
> The files in /usr/ports/www/apache13-modssl haven't changed for a while.
> 
> The OpenSSL site says that I need OpenSSL 0.9.6e.
> 
> I don't know how to tell whether mod_ssl includes its own copy of
> OpenSSL or links with the system OpenSSL library, and (if the latter)
> whether it does so statically or dynamically.  If it links dynamically
> with the system OpenSSL (/usr/lib/libssl.so.2), then the upgrade to
> 4.6-RELENG will secure it.  However, the package includes
> /usr/local/libexec/apache/libssl.so, which looks to me as if it is,
> exactly, OpenSSL (0.9.6a, apparently, based on the output of
> "strings").  So maybe mod_ssl is dynamically linking with this version
> of OpenSSL.  If so, can I simply replace this file with a copy of
> /usr/lib/libssl.so, after the upgrade?
> 
> The OpenSSL advisory says that I can work around the vulnerabilities
> on a server by turning off version 2 of the SSL protocol.  Can I do
> that simply by changing the SSLCipherSuite line in httpd.conf?  If so,
> will the reduced server capability adversely affect security?
> 
> Nick B
> 
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