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[IT-SecNots] [Security-news] SA-CONTRIB-2014-119 - Google Analytics - Information disclosure


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  • From: security-news AT drupal.org
  • To: security-news AT drupal.org
  • Subject: [IT-SecNots] [Security-news] SA-CONTRIB-2014-119 - Google Analytics - Information disclosure
  • Date: Wed, 10 Dec 2014 22:17:26 +0000 (UTC)
  • List-archive: <https://service.piratenpartei.de/pipermail/it-securitynotifies>
  • List-id: Sicherheitsankündigungen <it-securitynotifies.lists.piratenpartei.de>

View online: https://www.drupal.org/node/2390689

* Advisory ID: DRUPAL-SA-CONTRIB-2014-119
* Project: Google Analytics [1] (third-party module)
* Version: 7.x
* Date: 2014-December-10
* Security risk: 11/25 ( Moderately Critical)
AC:None/A:User/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
* Vulnerability: Information Disclosure

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

This module enables you to integrate Drupal with Google Analytics.

The module leaks the site specific hash salt to authenticated users when
user-id tracking is turned on.

This vulnerability is mitigated by the fact that user-id tracking must be
turned on and the attacker needs to have an account on the site.


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

* /A CVE identifier [3] will be requested, and added upon issuance, in
accordance
with Drupal Security Team processes./

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

* Google Analytics 7.x-2.0. Neither earlier nor later versions are
affected.

Drupal core is not affected. If you do not use the contributed Google
Analytics [4] module,
there is nothing you need to do.

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

Install the latest version:

* If you use the Google Analytics module for Drupal 7.x, upgrade to Google
Analytics 7.x-2.1 [5]

Affected sites are urged to generate a new hash salt and store it in
settings.php.

.... Methods to generate a new hash salt

* With drush:
drush php-eval 'echo(drupal_random_key()) . "\n";'
* With openssl:
openssl rand -base64 32

.... How to replace the hash salt

1) Open your settings.php file (e.g., sites/default/settings.php
2) Locate the variable $drupal_hash_salt:
<?php
/**
* Salt for one-time login links and cancel links, form tokens, etc.
* [...]
*/
$drupal_hash_salt = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
?>
3) Replace the value and safe the file
4) Flush all caches either from within the administrative UI
(/Administration » Configuration » Development » Performance/) or by
issuing drush cache-clear all

.... Effects caused by replacing the hash salt

* Passwort reset links generated before the new hash salt will not work
anymore. Affected users need to request a new password reset link.
* Existing image style urls will stop working. A cache flush is necessary
such that all tags are updated.

If immediate installation / regeneration of the hash salt is not possible,
then disable user-id tracking at once.

Also see the Google Analytics [6] project page.

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

* Alexander Hass [7] the module maintainer
* znerol [8]

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

* Alexander Hass [9] the module maintainer

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

* Klaus Purer [10] 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 https://www.drupal.org/contact [11].

Learn more about the Drupal Security team and their policies [12], writing
secure code for Drupal [13], and securing your site [14].

Follow the Drupal Security Team on Twitter at
https://twitter.com/drupalsecurity [15]


[1] https://www.drupal.org/project/google_analytics
[2] https://www.drupal.org/security-team/risk-levels
[3] http://cve.mitre.org/
[4] https://www.drupal.org/project/google_analytics
[5] https://www.drupal.org/node/2384245
[6] https://www.drupal.org/project/google_analytics
[7] https://www.drupal.org/user/85918
[8] https://www.drupal.org/user/63999
[9] https://www.drupal.org/user/85918
[10] https://www.drupal.org/user/262198
[11] https://www.drupal.org/contact
[12] https://www.drupal.org/security-team
[13] https://www.drupal.org/writing-secure-code
[14] https://www.drupal.org/security/secure-configuration
[15] https://twitter.com/drupalsecurity

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