SAML Service Provider: Unauthorised Access -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0890
  SAML Service Provider - Critical - Access bypass - SA-CONTRIB-2020-006
                               12 March 2020

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

Product:           SAML Service Provider
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://www.drupal.org/sa-contrib-2020-006

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Drupal
Security advisories

SAML Service Provider - Critical - Access bypass - SA-CONTRIB-2020-006

Project: 
SAML Service Provider
Date: 
2020-March-11
Security risk: 
Critical 15?25 AC:Basic/A:None/CI:Some/II:Some/E:Theoretical/TD:Default
Vulnerability: 
Access bypass
Description: 

This module enables you to authenticate Drupal users using an external SAML
Identity Provider.

If the site is configured to allow visitors to register for user accounts but
administrator approval is required, the module doesn't sufficiently enforce the
administrative approval requirement, in the case where the requesting user has
already authenticated through SAML.

This vulnerability is mitigated by the fact that user accounts created in this
way have only default roles, which may not have access significantly beyond
that of an anonymous user. To mitigate the vulnerability without upgrading
sites could disable public registration.

Solution: 

Install the latest version:

  * If you use the SAML Service Provider module for Drupal 8.x, upgrade to SAML
    Service Provider 8.x-3.7

Also see the SAML Service Provider project page.

Reported By: 

  * J Proctor

Fixed By: 

  * J Proctor
  * James Glasgow

Coordinated By: 

  * Greg Knaddison of the Drupal Security Team

Contact and more information

The Drupal security team can be reached by email at security at drupal.org or
via the contact form.

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 @drupalsecurity

Contributing organizations for this advisory

  * Colorado Governor's Office of Information Technology - Colorado Digital
    Service


The security team is made up of volunteers around the world. The companies
above have sponsored time on this release.

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