Bug#623001: libgnutls26: fails to handshake on a number of sites (firefox works)

Simon Josefsson simon at josefsson.org
Sun Apr 17 09:45:43 CEST 2011

Nikos Mavrogiannopoulos <nmav at gnutls.org> writes:

> On 04/16/2011 05:54 PM, Andreas Metzler wrote:
>> thank you for taking the time to test the packages in experimental. I
>> can reproduce the bug.
>> For clarification it is not caused by libgcrypt11 from experimental,
>> libgnutls26 2.12.2-1 with stable libgcrypt11 also fails.  Attached
>> verbose log is not a lot more enlightening.
> d3nwyuy0nl342s.cloudfront.net seems to support only one ciphersuite.
> That is ARCFOUR-128 with HMAC-MD5. I disabled HMAC-MD5 from the default
> set in 2.12.0 because it is not really trusted as an HMAC any more.
> If however this is widespread issue I'll reinstate HMAC-MD5 and
> remove it when a real attack is known.

I thought there weren't any attacks on HMAC-MD5, have I missed anything?


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