January 28, 2002

Conectiva: 'openldap' Privilege violation

Author: JT Smith

Connectiva: "Thomas Fritz reported[3] a vulnerability in the ldap server which could be exploited by remote attackers to delete attributes from an object even if those attributes were protected by ACLs."

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE   : openldap
SUMMARY   :
DATE      : 2002-01-28 12:17:00
ID        : CLA-2002:459
RELEVANT
RELEASES  : 6.0, 7.0

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DESCRIPTION
 OpenLDAP[1] is an LDAPv2 and LDAPv3 server available for several
 platforms.

 Thomas Fritz reported[3] a vulnerability in the ldap server which
 could be exploited by remote attackers to delete attributes from an
 object even if those attributes were protected by ACLs.

 Authenticated users (in openldap versions 2.0.8 up to 2.0.19) could
 issue a REPLACE command for an attribute where the new value is an
 empty one, thus effectively removing the attribute if allowed by the
 current schema, that is, if the attribute in question is not
 mandatory. In versions prior to 2.0.8, anonymous users could do this
 as well, regardless of ACLs protecting this attribute.

 The OpenLDAP project has released[2] a new version to address this
 vulnerability. OpenLDAP 1.2.x is not affected by this vulnerability,
 only the specified 2.0.x releases.



SOLUTION
 It is recommended that all OpenLDAP 2.0.x users upgrade their
 packages. If the service is already running, the upgrade will
 automatically restart it.


 REFERENCES
 1.  http://www.openldap.org
2.
  http://www.openldap.org/lists/openldap-announce/200201/msg00002.html
3.  http://www.openldap.org/lists/openldap-bugs/200201/msg00049.html
4.  http://www.securityfocus.com/bid/3945


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES 
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/openldap2-2.0.21-1U60_1cl.src.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/openldap2-2.0.21-1U60_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/openldap2-devel-2.0.21-1U60_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/openldap2-tests-2.0.21-1U60_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/SRPMS/openldap-2.0.21-1U70_2cl.src.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-2.0.21-1U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-client-2.0.21-1U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-devel-2.0.21-1U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-devel-static-2.0.21-1U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-doc-2.0.21-1U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/openldap-server-2.0.21-1U70_2cl.i386.rpm


ADDITIONAL INSTRUCTIONS
 Users of Conectiva Linux version 6.0 or higher may use apt to perform
 upgrades of RPM packages:
 - add the following line to /etc/apt/sources.list if it is not there yet
   (you may also use linuxconf to do this):

 rpm [cncbr]  ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

 - run:                 apt-get update
 - after that, execute: apt-get upgrade

 Detailed instructions reagarding the use of apt and upgrade examples
 can be found at  http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en


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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at 
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at  http://distro.conectiva.com.br/seguranca/politica/?idioma=en
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All our advisories and generic update instructions can be viewed at 
http://distro.conectiva.com.br/atualizacoes/?idioma=en

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