Home / mailings [gentoo-announce] [ GLSA 200711-33 ] nss_ldap: Information disclosure
Posted on 25 November 2007
Gentoo-announce-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200711-33
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low
Title: nss_ldap: Information disclosure
Date: November 25, 2007
Bugs: #198390
ID: 200711-33
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
A race condition might lead to theft of user credentials or information
disclosure in services using nss_ldap.
Background
==========
nss_ldap is a Name Service Switch module which allows 'passwd', 'group'
and 'host' database information to be pulled from LDAP.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-auth/nss_ldap < 258 >= 258
Description
===========
Josh Burley reported that nss_ldap does not properly handle the LDAP
connections due to a race condition that can be triggered by
multi-threaded applications using nss_ldap, which might lead to
requested data being returned to a wrong process.
Impact
======
Remote attackers could exploit this race condition by sending queries
to a vulnerable server using nss_ldap, possibly leading to theft of
user credentials or information disclosure (e.g. Dovecot returning
wrong mailbox contents).
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All nss_ldap users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-auth/nss_ldap-258"
References
==========
[ 1 ] CVE-2007-5794
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5794
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200711-33.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
