copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2014.1180 - [Win][UNIX/Linux] Drupal: Multiple vulnerabilities

Date: 17 July 2014

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.1180
      A number of vulnerabilities have been identified in Drupal core
                               17 July 2014

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Drupal
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service        -- Remote/Unauthenticated      
                   Cross-site Scripting     -- Remote with User Interaction
                   Access Confidential Data -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://www.drupal.org/SA-CORE-2014-003

- --------------------------BEGIN INCLUDED TEXT--------------------

   * Advisory ID: DRUPAL-SA-CORE-2014-003
   * Project: Drupal core [1]
   * Version: 6.x, 7.x
   * Date: 2014-July-16
   * Security risk: Critical [2]
   * Exploitable from: Remote
   * Vulnerability: Multiple vulnerabilities

- -------- DESCRIPTION ---------------------------------------------------------

Multiple vulnerabilities were fixed in the supported Drupal core versions 6
and 7.

.... Denial of service with malicious HTTP Host header (Base system - Drupal
       6 and 7 - Critical)

Drupal core's multisite feature dynamically determines which configuration
file to use based on the HTTP Host header.

The HTTP Host header validation does not sufficiently check
maliciously-crafted header values, thereby exposing a denial of service
vulnerability.

.... Access bypass (File module - Drupal 7 - Critical)

The File module included in Drupal 7 core allows attaching files to pieces of
content.  The module doesn't sufficiently check permission to view the
attached file when attaching a file that was previously uploaded. This could
allow attackers to gain access to private files.

This vulnerability is mitigated by the fact that the attacker must have
permission to create or edit content with a file field.

Note: The Drupal 6 FileField [3] module is affected by a similar issue (see
SA-CONTRIB-2014-071 - FileField - Access bypass [4]) and requires an update
to the current security release of Drupal 6 core in order for the fix
released there to work correctly.  However, Drupal 6 core itself is not
directly affected.

.... Cross-site scripting (Form API option groups - Drupal 6 and 7 -
       Moderately critical)

A cross-site scripting vulnerability was found due to Drupal's form API
failing to sanitize option group labels in select elements.  This
vulnerability affects Drupal 6 core directly, and likely affects Drupal 7
forms provided by contributed or custom modules.

This vulnerability is mitigated by the fact that it requires the "administer
taxonomy" permission to exploit in Drupal 6 core, and there is no known
exploit within Drupal 7 core itself.

.... Cross-site scripting (Ajax system - Drupal 7 - Moderately critical)

A reflected cross-site scripting vulnerability was found in certain forms
containing a combination of an Ajax-enabled textfield (for example, an
autocomplete field) and a file field.

This vulnerability is mitigated by the fact that an attacker can only trigger
the attack in a limited set of circumstances, usually requiring custom or
contributed modules.


- -------- CVE IDENTIFIER(S) ISSUED --------------------------------------------

   * /A CVE identifier [5] will be requested, and added upon issuance, in
     accordance with Drupal Security Team processes./

- -------- VERSIONS AFFECTED ---------------------------------------------------

   * Drupal core 6.x versions prior to 6.32.
   * Drupal core 7.x versions prior to 7.29.

- -------- SOLUTION ------------------------------------------------------------

Install the latest version:

   * If you use Drupal 6.x, upgrade to Drupal core 6.32. [6]
   * If you use Drupal 7.x, upgrade to Drupal core 7.29. [7]

Also see the Drupal core [8] project page.

- -------- REPORTED BY ---------------------------------------------------------

   * The denial of service vulnerability using malicious HTTP Host headers was
     reported by Régis Leroy [9].
   * The access bypass vulnerability in the File module was reported by Ivan Ch
     [10].
   * The cross-site scripting vulnerability with Form API option groups was
     reported by Kroly Ngyesi [11].
   * The cross-site scripting vulnerability in the Ajax system was reported by
     mani22test [12].

- -------- FIXED BY ------------------------------------------------------------

   * The denial of service vulnerability using malicious HTTP Host headers was
     fixed by Regis Leroy [13], and by Klaus Purer [14] of the Drupal Security
     Team.
   * The access bypass vulnerability in the File module was fixed by Nate Haug
     [15] and Ivan Ch [16], and by Drupal Security Team members David Rothstein
     [17], Heine Deelstra [18] and David Snopek [19].
   * The cross-site scripting vulnerability with Form API option groups was
     fixed by Greg Knaddison [20] of the Drupal Security Team.
   * The cross-site scripting vulnerability in the Ajax system was fixed by
     Neil Drumm [21] of the Drupal Security Team.

- -------- COORDINATED BY ------------------------------------------------------

   * The Drupal Security Team [22]

- -------- 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 [23].

Learn more about the Drupal Security team and their policies [24], writing
secure code for Drupal [25], and securing your site [26].

Follow the Drupal Security Team on Twitter at
https://twitter.com/drupalsecurity [27]


[1] http://drupal.org/project/drupal
[2] http://drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/filefield
[4] https://www.drupal.org/node/2304561
[5] http://cve.mitre.org/
[6] https://www.drupal.org/drupal-6.32-release-notes
[7] https://www.drupal.org/drupal-7.29-release-notes
[8] http://drupal.org/project/drupal
[9] https://www.drupal.org/user/1367862
[10] https://www.drupal.org/user/556138
[11] https://www.drupal.org/u/chx
[12] https://www.drupal.org/user/2844779
[13] https://www.drupal.org/user/1367862
[14] https://www.drupal.org/user/262198
[15] https://www.drupal.org/user/35821
[16] https://www.drupal.org/user/556138
[17] https://www.drupal.org/user/124982
[18] https://www.drupal.org/user/17943
[19] https://www.drupal.org/user/266527
[20] https://www.drupal.org/u/greggles
[21] https://www.drupal.org/u/drumm
[22] http://drupal.org/security-team
[23] http://drupal.org/contact
[24] http://drupal.org/security-team
[25] http://drupal.org/writing-secure-code
[26] http://drupal.org/security/secure-configuration
[27] https://twitter.com/drupalsecurity

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=MwLK
-----END PGP SIGNATURE-----