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   * Advisory ID: DRUPAL-SA-CONTRIB-2014-026
   * Project: Mime Mail [1] (third-party module)
   * Version: 6.x, 7.x
   * Date: 2014-February-26
   * Security risk: Not critical [2]
   * Exploitable from: Remote
   * Vulnerability: Access bypass


The MIME Mail module allows processing of incoming MIME-encoded e-mail
messages with embedded images and attachments.

The default key for the authentication of incoming messages is generated from
a random number. On some platforms (such as Windows) the maximum value of
this number is only 32767 which makes the generated key particularly
vulnerable to a brute force attack.

This vulnerability is mitigated by the fact that the processing of incoming
messages needs to be enabled on the site and the default key can be arbitrary
changed by the site administrator.


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


   * Mime Mail 6.x-1.x versions prior to 6.x-1.3.
   * Mime Mail 7.x-1.x versions prior to 7.x-1.0-beta2.

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

-------- SOLUTION

Install the latest version:

   * If you use the Mime Mail module for Drupal 6.x, upgrade to Mime Mail
     6.x-1.3 [5]
   * If you use the Mime Mail module for Drupal 7.x, upgrade to Mime Mail
     7.x-1.0-beta2 [6]

These releases include a stronger authentication process for incoming
messages which is backward incompatible. If you are using this feature, make
sure to use the HMAC method with the new key generated during the update
process to authenticate your messages.

Also see the Mime Mail [7] project page.

-------- REPORTED BY

   * Heine Deelstra [8] of the Drupal Security Team

-------- FIXED BY

   * Gabor Seljan [9] the module maintainer
   * Rick Manelius [10]provisional Drupal Security Team member


   * Hunter Fox [11] of the Drupal Security Team
   * Rick Manelius [12] provisional Drupal Security Team member.


The Drupal security team can be reached at security at or via the
contact form at [13].

Learn more about the Drupal Security team and their policies [14], writing
secure code for Drupal [15], and securing your site [16].

Follow the Drupal Security Team on Twitter at [17]


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