[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Tue, 24 Mar 2009 20:19:52 -0600
From: Vincent Danen <vdanen@...hat.com>
To: oss-security@...ts.openwall.com
Cc: "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE request -- ucd-snmp / net-snmp,
libnss-ldapd / nss_ldap
* [2009-03-24 21:05:49 -0400] Steven M. Christey wrote:
>> >2, libnss-ldapd / nss_ldap: LDAP service configuration file
>> > shipped with world readable permissions
>> > References:
>> > https://bugzilla.redhat.com/show_bug.cgi?id=491623
>> > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=520476
>>
>> On a side note, this is pretty specific to libnss-ldapd and not so much
>> nss_ldap.
>
>So, the various bug reports and followups list:
>
> libnss-ldapd
> nss_ldap
> nss-ldapd
> openldap
>
>Which package is actually affected and what versions might they be?
nss-ldapd is the name of the upstream package. I suppose Debian and
others may package it with a package name of libnss-ldapd.
nss-ldapd is a fork of nss_ldap... I don't know enough to say how much
it differs, but for nss_ldap at least, /etc/ldap.conf should be
world-readable (or at least typically is, with no real exposure since
using non-anonymous binds to LDAP would be unusual -- at least from
everything I've seen and done with LDAP authentication).
/etc/ldap.conf has nothing to do with openldap and while the filename,
and probably file contents are the same, it sounds like libnss-ldap may
require more protection and/or be meant to run with a protected
configuration file.
It also, and someone correct me if I'm wrong, be due to the debian
package allowing someone to specify a bindpw at install and then not
protecting the file contents if someone does specify a bindpw. With
RHEL and Fedora, there are no mechanisms to ask a user for a bindpw
(because it is not typical), so we would expect that an admin who puts a
bindpw in there for a user that is meant to be protected (i.e. something
other than an unprivileged user that suits the criteria for anonymous
binds for the purpose of obtaining certain non-privileged user
information), would also adequately protect the file when manually
setting the password.
And, if that is the case, then I would argue this is a debconf-specific
issue for this package than a general nss-ldapd-specific issue.
In fact, if you look here:
http://ch.tudelft.nl/~arthur/nss-ldapd/news.html#20090322
you'll see that this is noted as a "security problem in ... the Debian
package configuration".
>Use CVE-2009-1073, to be filled in once I have some more detail.
--
Vincent Danen / Red Hat Security Response Team
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
