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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgendes Fedora Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.

CVE-2011-2687 – Schwachstelle in Drupal 7.x

In Drupal Version 7.0, 7.1 und 7.2 ist es moeglich, die
Zugriffsbeschraenkungen fuer das Auflisten von Knoten zu umgehen.
Dadurch ist es einem entfernten Angreifer moeglich, alle Knoten
aufzulisten, unabhaengig davon, was fuer Beschraenkungen mittels des
“node_access”-Systems festgelegt wurden. Betroffen sind nur
Installationen, die ein Modul fuer den Knotenzugriff verwenden
(content_access, forum_access).

Betroffen sind die folgenden Software Pakete und Plattformen:

Paket drupal7

Fedora 14
Fedora 15

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.

Mit freundlichen Gruessen,
Timo Schulz

– —
Timo Schulz, M.Sc. (Incident Response Team)

DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-590
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

Automatische Warnmeldungen: https://www.cert.dfn.de/autowarn

– ——————————————————————————–
Fedora Update Notification
FEDORA-2011-8879
2011-06-30 18:37:05
– ——————————————————————————–

Name : drupal7
Product : Fedora 14
Version : 7.4
Release : 1.fc14
URL : http://www.drupal.org
Summary : An open-source content-management platform
Description :
Equipped with a powerful blend of features, Drupal is a Content Management
System written in PHP that can support a variety of websites ranging from
personal weblogs to large community-driven websites. Drupal is highly
configurable, skinnable, and secure.

– ——————————————————————————–
Update Information:

Remember to log in as user 1 prior to the RPM update, to perform the DB upgrade via http://yoursite/update.php.

* Advisory ID: DRUPAL-SA-CORE-2011-002
* Project: Drupal core [1]
* Version: 7.x
* Date: 2011-JUNE-29
* Security risk: Highly critical [2]
* Exploitable from: Remote
* Vulnerability: Access bypass

– ——– DESCRIPTION
– ———————————————————

…. Access bypass in node listings

Listings showing nodes but not JOINing the node table show all nodes
regardless of restrictions imposed by the node_access system. In core, this
affects the taxonomy and the forum subsystem.

Note that fixing this issue in contributed modules requires a
backwards-compatible API change for modules listing nodes. See
http://drupal.org/node/1204572 [3] for more details.

This issue affects Drupal 7.x only.

– ——– VERSIONS AFFECTED
– —————————————————

* Drupal 7.0, 7.1 and 7.2.

– ——– SOLUTION
– ————————————————————

Install the latest version:

* If you are running Drupal 7.x then upgrade to Drupal 7.3 or 7.4.

The Security Team has released both a pure security update without other bug
fixes and a security update combined with other bug fixes and improvements.
You can choose to either only include the security update for an immediate
fix (which might require less quality assurance and testing) or more fixes
and improvements alongside the security fixes by choosing between Drupal 7.3
and Drupal 7.4. Read the announcement [4] for more information.

See also the Drupal core [5] project page.

– ——– REPORTED BY
– ———————————————————

* The access bypass was reported independently by numerous people, including
Sascha Grossenbacher [6], Khaled Alhourani [7], and Ben Ford [8].

– ——– FIXED BY
– ————————————————————

* The access bypass was fixed by Károly Négyesi [9], member of the Drupal
security team

– ——– CONTACT AND MORE INFORMATION
– —————————————-

The Drupal security team can be reached at security at drupal.org or via the
contact form at http://drupal.org/contact [10].

Learn more about the Drupal Security team and their policies [11], writing
secure code for Drupal [12], and securing your site [13].

[1] http://drupal.org/project/drupal
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/node/1204572
[4] http://drupal.org/drupal-7.4
[5] http://drupal.org/project/drupal
[6] http://drupal.org/user/214652
[7] http://drupal.org/user/265439
[8] http://drupal.org/user/12534
[9] http://drupal.org/user/9446
[10] http://drupal.org/contact
[11] http://drupal.org/security-team
[12] http://drupal.org/writing-secure-code
[13] http://drupal.org/security/secure-configuration

– ——————————————————————————–
References:

[ 1 ] Bug #717874 – CVE-2011-2687 Remote access bypass vulnerability in Drupal 7
https://bugzilla.redhat.com/show_bug.cgi?id=717874
[ 2 ] Bug #706736 – Put modules and themes directories under /etc/drupal7/all/
https://bugzilla.redhat.com/show_bug.cgi?id=706736
– ——————————————————————————–

This update can be installed with the “yum” update program. Use
su -c ‘yum update drupal7’ at the command line.
For more information, refer to “Managing Software with yum”,
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
– ——————————————————————————–

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