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Gentoo Linux Security Advisory GLSA 200611-25
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http://security.gentoo.org/
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Severity: Normal
Title: OpenLDAP: Denial of Service vulnerability
Date: November 28, 2006
Bugs: #154349
ID: 200611-25
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Synopsis
========
A flaw in OpenLDAP allows remote unauthenticated attackers to cause a
Denial of Service.
Background
==========
OpenLDAP is a suite of LDAP-related applications and development tools.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-nds/openldap < 2.3.27-r3 >= 2.3.27-r3
*>= 2.2.28-r5
*>= 2.1.30-r8
Description
===========
Evgeny Legerov has discovered that the truncation of an incoming
authcid longer than 255 characters and ending with a space as the 255th
character will lead to an improperly computed name length. This will
trigger an assert in the libldap code.
Impact
======
By sending a BIND request with a specially crafted authcid parameter to
an OpenLDAP service, a remote attacker can cause the service to crash.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All OpenLDAP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose "net-nds/openldap"
References
==========
[ 1 ] CVE-2006-5779
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5779
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200611-25.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 2006 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
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