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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.3011 Drupal core - Critical - Remote installation PSA-2015-001 3 December 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Drupal Publisher: Drupal Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Provide Misleading Information -- Remote/Unauthenticated Resolution: Mitigation Original Bulletin: https://www.drupal.org/PSA-2015-001 - --------------------------BEGIN INCLUDED TEXT-------------------- View online: https://www.drupal.org/PSA-2015-001 * Advisory ID: DRUPAL-PSA-CONTRIB-2015-001 * Project: Drupal core [1] * Version: 6.x, 7.x, 8.x * Date: 2015-December-02 * Security risk: 17/25 ( Critical) AC:Basic/A:None/CI:Some/II:Some/E:Exploit/TD:Uncommon [2] * Vulnerability: Multiple vulnerabilities - -------- DESCRIPTION --------------------------------------------------------- When a Drupal installation is not completed past the database configuration phase and install.php is left accessible via the internet, any visitor to install.php may complete the installation with a remote database of their selection. Such a malicious user may use the remote database to execute code on the server. The above also applies to sites that react to certain hostnames with an installation page and have a sites folder owned or writable by the webserver. Such inadvertent multisites may occur when no default settings.php is present and directory permissions are misconfigured. These vulnerabilities are mitigated by setting directory and/or file permissions that prevent the webserver from writing to the sites/default/ and sites/ directories. - -------- CVE IDENTIFIER(S) ISSUED -------------------------------------------- * /A CVE identifier [3] will be requested, and added upon issuance, in accordance with Drupal Security Team processes./ - -------- VERSIONS AFFECTED --------------------------------------------------- Drupal 6 core, Drupal 7 core and Drupal 8 core. - -------- SOLUTION ------------------------------------------------------------ Always complete installations fully on servers exposed to the internet. Ensure that the webserver does not own the sites folder and cannot write to the sites folder. Consider removing install.php after installation. Consider installing and automating the execution of Security review [4] which will identify weak file permissions and ownership. Also see the Drupal core [5] project page. - -------- COORDINATED BY ------------------------------------------------------ * Heine Deelstra [6] of the Drupal security team * Greg Knaddison [7] of the Drupal security team * Michael Hess [8] of 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 [9]. Learn more about the Drupal Security team and their policies [10], writing secure code for Drupal [11], and securing your site [12]. Follow the Drupal Security Team on Twitter at https://twitter.com/drupalsecurity [13] [1] https://www.drupal.org/project/drupal [2] https://www.drupal.org/security-team/risk-levels [3] http://cve.mitre.org/ [4] https://www.drupal.org/project/security_review [5] https://www.drupal.org/project/drupal [6] https://www.drupal.org/u/heine [7] https://www.drupal.org/u/greggles [8] https://www.drupal.org/u/mlhess [9] https://www.drupal.org/contact [10] https://www.drupal.org/security-team [11] https://www.drupal.org/writing-secure-code [12] https://www.drupal.org/security/secure-configuration [13] https://twitter.com/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. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVl/JJn6ZAP0PgtI9AQI7ZhAApWy7DlD7CU5Fe+w3qSjmAl/UF4/woAju iN7OPcRdz9q6yltt9NU2Uy1AFQNsnDAFELOO5ROsuBYc1J0ZC1rAOknloejV9gOe LVAfExXQFee23h6W9gY/T2rL1jrSFp57/uod9wKzCla/h4FMrYZtCJlLkyUpQeCb 3bSRj1ZJ85vsRbxFgQAwO1oWdcAaxpWqGv3L9VcjJm/HnHLS2EUaRNNrjquznEh0 uynJd6CBRsPMUuAsXeBhIjBmYt6Qw4mt+ZoZtHepJFi6th4GzTy2RkS6t+NSrWUg 3rsGa4atw+7NE2zxOlKBto7SjBNGvfqZOWi62my4rAIaDpgbUDhOZ5HiVEm2Pm5f aA3Vw7IOgPvl4PIytZqqawgURrbGnweDx9zaqFYK2/OYTlKh0ogSSixl15bj2On5 Tuc7yfoZm64Tn22ph0SxsL9U78/nlSxXgMFGBouhGIcBhnuTNSl9zn+CNxS3bWFV aFPX/xg7RDnhWnW5zRlbCNfZvuWGACYACqWlmXoK8FRDPhzUG/2D3KsWHFEXWNnZ l5V2mcC94ecmRUAGQhRLymR0AMnsA3hhSn8Sc9qyYLspP281wYF3AxmhksJWGiW0 tWjD73MG0nKhvYWge/LqMQt5ZGBXueBeTDo/8uz2frwjUmcR2PIl6dikNNrBGyvH fX800VrIhXE= =d7S4 -----END PGP SIGNATURE-----