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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1630 Tomcat vulnerabilities 31 May 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tomcat Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-8014 CVE-2018-1305 CVE-2018-1304 CVE-2017-15706 CVE-2017-12617 CVE-2017-12616 Reference: ESB-2018.1509 ESB-2018.1488 ESB-2018.0652 ESB-2018.0542 Original Bulletin: http://www.ubuntu.com/usn/usn-3665-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3665-1: Tomcat vulnerabilities 30 May 2018 tomcat7, tomcat8 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.04 LTS o Ubuntu 17.10 o Ubuntu 16.04 LTS o Ubuntu 14.04 LTS Summary Several security issues were fixed in Tomcat. Software Description o tomcat8 - Servlet and JSP engine o tomcat7 - Servlet and JSP engine Details It was discovered that Tomcat incorrectly handled being configured with HTTP PUTs enabled. A remote attacker could use this issue to upload a JSP file to the server and execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-12616, CVE-2017-12617) It was discovered that Tomcat contained incorrect documentation regarding description of the search algorithm used by the CGI Servlet to identify which script to execute. This issue only affected Ubuntu 17.10. (CVE-2017-15706) It was discovered that Tomcat incorrectly handled en empty string URL pattern in security constraint definitions. A remote attacker could possibly use this issue to gain access to web application resources, contrary to expectations. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-1304) It was discovered that Tomcat incorrectly handled applying certain security constraints. A remote attacker could possibly access certain resources, contrary to expectations. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-1305) It was discovered that the Tomcat CORS filter default settings were insecure and would enable 'supportsCredentials' for all origins, contrary to expectations. (CVE-2018-8014) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS libtomcat8-java - 8.5.30-1ubuntu1.2 tomcat8 - 8.5.30-1ubuntu1.2 Ubuntu 17.10 libtomcat8-java - 8.5.21-1ubuntu1.1 tomcat8 - 8.5.21-1ubuntu1.1 Ubuntu 16.04 LTS libtomcat8-java - 8.0.32-1ubuntu1.6 tomcat8 - 8.0.32-1ubuntu1.6 Ubuntu 14.04 LTS libtomcat7-java - 7.0.52-1ubuntu0.14 tomcat7 - 7.0.52-1ubuntu0.14 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References o https://usn.ubuntu.com/usn/usn-3665-1 o CVE-2017-12616 o CVE-2017-12617 o CVE-2017-15706 o CVE-2018-1304 o CVE-2018-1305 o CVE-2018-8014 - --------------------------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. 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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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