Getting IMSP segfaults when accessing LDAP

[Moritz Both]

It looks llike it may be related to re-entrace in the sasl libraries. 
See this:

http://bugs.debian.org/145766

I had seg faults on debian woody when I tried this: Cyrus imap -> sasl 
-> pam -> pam_ldap

The problem was that pam_ldap was compiled with sasl, and the sasl 
libraries are not reentrant. Thus a double free bug was triggered.

"The Debian libldap2 and cyrus-imapd packages are both compiled using
the SASL library. If you use cyrus-imapd together with libnss-ldap, or
saslauthd together with libpam-ldap, the resulting double calls to SASL
library functions can trigger a double-free bug which may cause the
calling process to crash. To  avoid such a crash, you must recompile the
libldap2 package --without-cyrus-sasl."

Dont know if this is documented anywhere outside the debian bug databases.

Greetings,
Moritz


Rob Tanner schrieb:

> Rob,
> 
> Took a while to figure out what to set so that core could get dumped. I
> think this is what you're asking for:
> 
>> (gdb) bt
>> #0  0xb7473127 in _sasl_ipfromstring (addr=0x1 <Address 0x1 out of bounds>, out=0x0, outlen=0)


-- 
Moritz Both
Aldebaran Daten- und Kommunikationssysteme GmbH
Im Moore 26
30167 Hannover
Tel. +49 511 270 41 60
Fax +49 511 27 04 16 33
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