Big CA certificate bundle causes problems with GnuTLS 3.0.11

Nikos Mavrogiannopoulos nmav at
Tue May 29 22:34:33 CEST 2012

On 05/29/2012 05:31 PM, Phil Pennock wrote:

> On 2012-05-29 at 21:46 +0700, Janne Snabb wrote:
>> I am experiencing a TLS handshake problem when GnuTLS 3.0.11 server has
>> a big pile of CA certificates to verify against. I can not reproduce the
>> problem with GnuTLS 2.12.14.
> hsk->length is read from the Handshake->length (uint24); data_size is
> the size of the CertificateRequest (received buffer size less 4 for the
> handshake header (type 1 octet, length 3 octets).
> hsk->start_offset is always 0.
> hsk->end_offset is always (hsk->length - 1) [because this isn't DTLS].
> So the check added in 67f4dba6 is going to always reject a fragmented
> handshake packet.

Correct. I've committed a fix at:;a=commitdiff;h=6299e8a8c7371da1e674419c36cbcbe1630aef0a

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