Drupal Releases Security Updates

07 Jul

Drupal has released security updates to address multiple vulnerabilities in its content management software. Exploitation of these vulnerabilities could allow a remote attacker to gain access to a system account, including an administrator's.

Versions affected

• Drupal core 6.x versions prior to 6.36
• Drupal core 7.x versions prior to 7.38

Available updates include:

Drupal core 6.36 for 6.x users
Drupal core 7.38 for 7.x users

Issues were found in the following modules:

  • Impersonation (OpenID module - Drupal 6 and 7): CVE-2015-3234 Critical

    A vulnerability was found in the OpenID module that allows a malicious user to log in as other users on the site, including administrators, and hijack their accounts.

    This vulnerability is mitigated by the fact that the victim must have an account with an associated OpenID identity from a particular set of OpenID providers (including, but not limited to, Verisign, LiveJournal, or StackExchange).

  • Open redirect (Field UI module - Drupal 7): CVE-2015-3232 Less critical

    The Field UI module uses a "destinations" query string parameter in URLs to redirect users to new destinations after completing an action on a few administration pages. Under certain circumstances, malicious users can use this parameter to construct a URL that will trick users into being redirected to a 3rd party website, thereby exposing the users to potential social engineering attacks.

    This vulnerability is mitigated by the fact that only sites with the Field UI module enabled are affected.

    Drupal 6 core is not affected, but see the similar advisory for the Drupal 6 contributed CCK module: SA-CONTRIB-2015-126

  • Open redirect (Overlay module - Drupal 7: CVE-2015-3233 Less critical

    The Overlay module displays administrative pages as a layer over the current page (using JavaScript), rather than replacing the page in the browser window. The Overlay module does not sufficiently validate URLs prior to displaying their contents, leading to an open redirect vulnerability.

    This vulnerability is mitigated by the fact that it can only be used against site users who have the "Access the administrative overlay" permission, and that the Overlay module must be enabled.

  • Information disclosure (Render cache system - Drupal 7): CVE-2015-3231 Less critical

    On sites utilizing Drupal 7's render cache system to cache content on the site by user role, private content viewed by user 1 may be included in the cache and exposed to non-privileged users.

    This vulnerability is mitigated by the fact that render caching is not used in Drupal 7 core itself (it requires custom code or the contributed Render Cache module to enable) and that it only affects sites that have user 1 browsing the live site. Exposure is also limited if an administrative role has been assigned to the user 1 account (which is done, for example, by the Standard install profile that ships with Drupal core).


    Install the latest version: If you use Drupal 6.x, upgrade to Drupal core 6.36 If you use Drupal 7.x, upgrade to Drupal core 7.38. If you are running an affected version, it`s highly recommended to review the Drupal’s Security Advisory in its entirety and apply the necessary updates.
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