* Soós László [2015-02-04 09:54:57 +0100]:
> The one referrenced was for openldap 2.1 I have 2.4 installed. Was't
> the issue fixed in 2 years? possible.

Not OpenLDAP but Cyrus SASL. The bug was fixed upstream in version 2.1.26
which may or may not have propagated to RHEL6. Of course I cannot be
certain that you're seeing the same problem but it's worth checking.

> openldap.x86_64 2.4.39-8.el6                 @base
> openldap-clients.x86_64 2.4.39-8.el6                 @base
> openldap-devel.x86_64 2.4.39-8.el6                 @base
> openldap-servers.x86_64 2.4.39-8.el6                 @base
> 
> What do you mean ldap server sane? I've got very plane gssapi config
> and the exactly same config worked before with the same environment.

If you're sure you haven't upgraded the GSSAPI plugin for libsasl2 on the
server, or enabled TLS, or anything of that sort, then one may have to look
for an alternative explanation.

> I just do not know what caused the breakdown as we upgraded more
> components in the same time: windows updates; java; on servers end:
> yum centos updates

Aha. You did apply CentOS updates on the servers; so it's not quite the same
environment any more, is it?

> #GSSAPI
> sasl-realm  XXX.LAN
> sasl-host   backend.xxx.lan
> #sasl-secprops noplain,noactive,noanonymous
> 
> Any hint on how to debug forther would be useful.

If you're using Oracle Java, try OpenJDK instead, just so we're 100% sure that
we have the source code. (I don't expect this to make any difference but it's
good to remove sources of uncertainty.)

Try disabling SSL/TLS (GSSAPI has its own encryption) and see if the problem
persists. (If "my" bug is the culprit the symptoms will probably disappear.)
If the problem does persist, capture the traffic with tcpdump or equivalent
and look at the SASL handshake.

> 
> Thank you
> 
> On 2015.02.04. 9:03, Sergio Gelato wrote:
> >* Sergio Gelato [2015-02-04 08:50:47 +0100]:
> >>Which brings us to com.sun.jndi.ldap.sasl.SaslOutputStream.write, where I
> >>have trouble seeing how the length could ever be negative… unless 
> >>rawSendSize
> >>is negative. The default value of rawSendSize is a safe 65536 but a 
> >>different
> >>one can be negotiated in the SASL handshake. There ought to be client-side
> >>safeguards too, but is your LDAP server sane?
> >Following up on myself due to a sensation of déjà vu: could this be the
> >same problem I reported in https://bugs.debian.org/721010 ?
> >
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