Bug#514578: libgnutls26: ldapsearch also not working here

2009-02-09 Thread Simon Josefsson
On Mon, 2009-02-09 at 15:09 +0100, Hermann Lauer wrote:
> Subject: libgnutls26: ldapsearch also not working here
> Followup-For: Bug #514578
> Package: libgnutls26
> Version: 2.4.2-5
> 
> *** Please type your report below this line ***
> Same error here from ldapsearch.
> 
> Our certificates indeed contains:
> 
> Signature Algorithm: md5WithRSAEncryption
> 
> Are there any workarounds without renewing all md5WithRSAEncryption 
> certs?

If you can get out-of-band verification that an intermediary certificate
signed using RSA-MD5 is the correct certificate and you are willing to
trust it for verification, you can add that RSA-MD5 cert explicitly to
your certificate trust list.  With 2.4.2-6, gnutls will stop looking
after finding a trusted intermediate certificate.

Of course, this work around requires that all gnutls based clients that
talks to your site has the intermediate certificate in their trusted
cert list.

The proper fix is to get a new certificate for your server that isn't
part of a RSA-MD5 chain.  More background on the insecurity of RSA-MD5
is available from:

http://www.win.tue.nl/hashclash/rogue-ca/

/Simon





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Bug#514578: libgnutls26: ldapsearch also not working here

2009-02-09 Thread Hermann Lauer
Subject: libgnutls26: ldapsearch also not working here
Followup-For: Bug #514578
Package: libgnutls26
Version: 2.4.2-5

*** Please type your report below this line ***
Same error here from ldapsearch.

Our certificates indeed contains:

Signature Algorithm: md5WithRSAEncryption

Are there any workarounds without renewing all md5WithRSAEncryption 
certs?

Thanks, Hermann

-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libgnutls26 depends on:
ii  libc6  2.7-18GNU C Library: Shared libraries
ii  libgcrypt111.4.1-1   LGPL Crypto library - runtime libr
ii  libgpg-error0  1.4-2 library for common error values an
ii  libtasn1-3 1.4-1 Manage ASN.1 structures (runtime)
ii  zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime

libgnutls26 recommends no packages.

Versions of packages libgnutls26 suggests:
ii  gnutls-bin2.4.2-5the GNU TLS library - commandline 

-- no debconf information

-- 
Netzwerkadministration/Zentrale Dienste, Interdiziplinaeres 
Zentrum fuer wissenschaftliches Rechnen der Universitaet Heidelberg
IWR; INF 368; 69120 Heidelberg; Tel: (06221)54-8236 Fax: -5224
Email: hermann.la...@iwr.uni-heidelberg.de



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