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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2683 ImageCache Actions - Critical - Multiple Vulnerabilities - SA-CONTRIB-2019-056 18 July 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Drupal Contrib ImageCache Publisher: Drupal Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Modify Arbitrary Files -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade Original Bulletin: https://www.drupal.org/sa-contrib-2019-056 - --------------------------BEGIN INCLUDED TEXT-------------------- ImageCache Actions - Critical - Multiple Vulnerabilities - SA-CONTRIB-2019-056 Project: ImageCache Actions Date: 2019-July-17 Security risk: Critical 17/25 AC:Basic/A:Admin/CI:All/II:All/E:Theoretical/TD:All Vulnerability: Multiple Vulnerabilities Description: The imagecache actions module defines a number of additional image effects that can be used to create image styles. The "Image styles admin" sub module provides additional functionality to duplicate, export and import image styles. The module uses unserialize() to import image styles into another site where unserialize() is known to have security issues when processing potentially unsafe input. This vulnerability is mitigated by the fact that the "Image styles admin" sub module must be enabled and an attacker must have a role with the permission "'administer image styles'". Furthermore, the import functionality supports PHP code included in image effects as part of an image style, which would run on image derivative generation subject to the PHP module being enabled. This is intended behaviour for the "Image styles admin" sub module, but the user access restrictions should reflect the potential risks involved. The new security release of this module introduces a new "import image styles" permission which is marked as restricted. In order to use the image style import functionality, users will need to have a role which has this new permission in addition to "administer image styles" (which is not marked as restricted). Solution: * If you use the Imagecache Actions module for Drupal 7.x, upgrade to Imagecache Actions 7.x-1.10. * Image Effects, the D8 successor is *not* vulnerable to this exploit. Reported By: * Ruben Hofman Fixed By: * Erwin Derksen * Greg Knaddison of the Drupal Security Team Coordinated By: * Greg Knaddison of the Drupal Security Team * Ivo Van Geertruyen of the Drupal Security Team * Drew Webber 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 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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