[SECURITY] [DSA 3209-1] openldap security update

Type securityvulns
Reporter Securityvulns
Modified 2015-04-13T00:00:00



Debian Security Advisory DSA-3209-1 security@debian.org http://www.debian.org/security/ Yves-Alexis Perez March 30, 2015 http://www.debian.org/security/faq

Package : openldap CVE ID : CVE-2013-4449 CVE-2014-9713 CVE-2015-1545 Debian Bug : 729367 761406 776988

Multiple vulnerabilities were found in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol.


Michael Vishchers from Seven Principles AG discovered a denial of
service vulnerability in slapd, the directory server implementation.
When the server is configured to used the RWM overlay, an attacker
can make it crash by unbinding just after connecting, because of an
issue with reference counting.


The default Debian configuration of the directory database allows
every users to edit their own attributes. When LDAP directories are
used for access control, and this is done using user attributes, an
authenticated user can leverage this to gain access to unauthorized
Please note this is a Debian specific vulnerability.
The new package won't use the unsafe access control rule for new
databases, but existing configurations won't be automatically
modified. Administrators are incited to look at the README.Debian
file provided by the updated package if they need to fix the access
control rule.


 Ryan Tandy discovered a denial of service vulnerability in slapd.
 When using the deref overlay, providing an empty attribute list in
 a query makes the daemon crashes.

For the stable distribution (wheezy), these problems have been fixed in version 2.4.31-2.

For the upcoming stable distribution (jessie), these problems have been fixed in version 2.4.40-4.

For the unstable distribution (sid), these problems have been fixed in version 2.4.40-4.

We recommend that you upgrade your openldap packages.

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v2

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