-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Vulnerability Report Reported: January 3, 2012 Author: Justin C. Klein Keane <justin@madirish.net> Description of Vulnerability: - ----------------------------- Drupal (http://drupal.org) is a robust content management system (CMS) written in PHP and MySQL. The Drupal Custom Publishing Options module (https://drupal.org/project/custom_pub) contains a persistent cross site scripting (XSS) vulnerability due to the fact that it fails to sanitize format names before display. Systems affected: - ----------------- Drupal 6.22 with Custom Publishing Options 6.x-1.4 was tested and shown to be vulnerable Impact - ------ User could inject arbitrary scripts into pages affecting site users. This could result in administrative account compromise leading to web server process compromise. Mitigating factors: - ------------------- In order to execute arbitrary script injection malicious users must have 'Administer nodes' permission. Proof of Concept: - ----------------- 1. Install and enable the Custom Publishing Options module 2. Add a new label at ?q=admin/content/custom_pub inserting arbitrary HTML in the 'Publishing label' field. 3. Save the label to view the rendered script or view it on the create content page for the appropriate content type. Vendor response: - --------------- Upgrade to the latest version - -- Justin C. Klein Keane http://www.MadIrish.net The PGP signature on this email can be verified using the public key at http://www.madirish.net/gpgkey -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iPwEAQECAAYFAlAr7tQACgkQkSlsbLsN1gA+ogb/drMm08BCFHlfKg21hVHtoGjN bKLX26wErcLfvsIlwfPvCQx3cme8BNoUA7pCyjmYAIQAZBnAlNvXA6fxz4aLuED5 I8zkwWFOYLKHXlsXYI2hnPuf4AVUFE3wPptqSTqONzE3GIWVyIolIOwmYxT1mi8P 7s3bWG/MpKE0owNDYzNkM5qjBULIgMzyX1SIIGkqde8UqZrIJLk0AbKeDtNLeJ5p yb2WA8eIbkDUTPEPUpAu4fU43ki+dh0BN1b3Xqalrtel12ln1k62jORVqh07TGe/ wj9F9msw4R1wqHEZFlk= =B/fi -----END PGP SIGNATURE-----