Bug#677027: AUTH cannot handle a request with an initial-response over 2048 bytes (GSSAPI-related)

[Дмитрий Феофанов]

Package: exim4
Version: 4.72-6+squeeze2

2012-06-08 11:32:23 SMTP connection from [172.17.13.11] I=[10.10.0.97]:25 (TCP/IP connection count = 1)
2012-06-08 11:32:23 SMTP syntax error in "AUTH GSSAPI YIIF8gYJKoZIhvc... Kerberos token more than 2048 bytes in length...WYHKGN4D8Uf6Ubgic=" H=pliska.ilport ([127.0.0.1]) [172.17.13.11] I=[10.10.0.97]:25 unrecognized command

This bug is found when 3 conditions are met togeter:
*exim MTA
*GSSAPI AUTH when Kerberos token length is more than 2048 bytes in size
*Thunderbird MUA which sends initial authentication response which overfills command buffer of 2048 bytes in size
this bug is known in exim-dev:

http://bugs.exim.org/show_bug.cgi?id=879
http://www.mail-archive.com/exim-dev@exim.org/msg04547.html

Linux Watson 2.6.32-5-686 #1 SMP Sun May 6 04:01:19 UTC 2012 i686 GNU/Linux
Debian 6.0.5

could You include it in Debian distrib so I shouln't recompile each 
update of exim.
Thanks.
when size is lower than 2048 bytes authentication succedes, dovecot 
authenticates regardless of size of token.

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