Upgrade Your Drupal Skills
We trained 1,000+ Drupal Developers over the last decade.
See Advanced Courses NAH, I know EnoughDrupal Core - Moderately Critical - Multiple Vulnerabilities - SA-CORE-2014-006
- Advisory ID: DRUPAL-SA-CORE-2014-006
- Project: Drupal core
- Version: 6.x, 7.x
- Date: 2014-November-19
- Security risk: 14/25 ( Moderately Critical) AC:Basic/A:None/CI:Some/II:Some/E:Theoretical/TD:Uncommon
- Vulnerability: Multiple vulnerabilities
Description
Session hijacking (Drupal 6 and 7)
A specially crafted request can give a user access to another user's session, allowing an attacker to hijack a random session.
This attack is known to be possible on certain Drupal 7 sites which serve both HTTP and HTTPS content ("mixed-mode"), but it is possible there are other attack vectors for both Drupal 6 and Drupal 7.
Denial of service (Drupal 7 only)
Drupal 7 includes a password hashing API to ensure that user supplied passwords are not stored in plain text.
A vulnerability in this API allows an attacker to send specially crafted requests resulting in CPU and memory exhaustion. This may lead to the site becoming unavailable or unresponsive (denial of service).
This vulnerability can be exploited by anonymous users.
CVE identifier(s) issued
- Session hijacking (Drupal 6 and 7): CVE-2014-9015
- Denial of service (Drupal 7): CVE-2014-9016
Versions affected
- Drupal core 6.x versions prior to 6.34.
- Drupal core 7.x versions prior to 7.34.
Solution
Install the latest version:
- If you use Drupal 6.x, upgrade to Drupal core 6.34.
- If you use Drupal 7.x, upgrade to Drupal core 7.34.
If you have configured a custom session.inc file for your Drupal 6 or Drupal 7 site you also need to make sure that it is not prone to the same session hijacking vulnerability disclosed in this security advisory.
If you have configured a custom password.inc file for your Drupal 7 site you also need to make sure that it is not prone to the same denial of service vulnerability disclosed in this security advisory. See also the similar security advisory for the Drupal 6 contributed Secure Password Hashes module: SA-CONTRIB-2014-113
Also see the Drupal core project page.
Reported by
Session hijacking:
Denial of service:
Fixed by
Session hijacking:
- Klaus Purer of the Drupal Security Team
- David Rothstein of the Drupal Security Team
- Peter Wolanin of the Drupal Security Team
Denial of service:
- Klaus Purer of the Drupal Security Team
- Peter Wolanin of the Drupal Security Team
- Heine Deelstra of the Drupal Security Team
- Tom Phethean
Coordinated by
- 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.
Learn more about the Drupal Security team and their policies, writing secure code for Drupal, and securing your site.
Follow the Drupal Security Team on Twitter at https://twitter.com/drupalsecurity
Edits to this advisory since publishing
- Edited to mention the effect on sites that have configured a custom session.inc file.
About Drupal Sun
Drupal Sun is an Evolving Web project. It allows you to:
- Do full-text search on all the articles in Drupal Planet (thanks to Apache Solr)
- Facet based on tags, author, or feed
- Flip through articles quickly (with j/k or arrow keys) to find what you're interested in
- View the entire article text inline, or in the context of the site where it was created
See the blog post at Evolving Web