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Ubuntu 15.04: USN-2654-1 Critical: Tomcat XML Parser Attack Risk

Several security issues were fixed in Tomcat.. =========================================================================Ubuntu Security Notice USN-2654-1 June 25, 2015 tomcat7 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.04 - Ubuntu 14.10 - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Tomcat. Software Description: - tomcat7: Servlet and JSP engine Details: It was discovered that the Tomcat XML parser incorrectly handled XML External Entities (XXE). A remote attacker could possibly use this issue to read arbitrary files. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-0119) It was discovered that Tomcat incorrectly handled data with malformed chunked transfer coding. A remote attacker could possibly use this issue to conduct HTTP request smuggling attacks, or cause Tomcat to consume resources, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-0227) It was discovered that Tomcat incorrectly handled HTTP responses occurring before the entire request body was finished being read. A remote attacker could possibly use this issue to cause memory consumption, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-0230) It was discovered that the Tomcat Expression Language (EL) implementation incorrectly handled accessible interfaces implemented by inaccessible classes. An attacker could possibly use this issue to bypass a SecurityManager protection mechanism. (CVE-2014-7810) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.04: libtomcat7-java 7.0.56-2ubuntu0.1 Ubuntu 14.10: libtomcat7-java 7.0.55-1ubuntu0.2 Ubuntu 14.04 LTS: libtomcat7-java 7.0.52-1ubuntu0.3 In general, a standard system update will make allthe necessary changes. References: https://ubuntu.com/security/notices/USN-2654-1 CVE-2014-0119, CVE-2014-0227, CVE-2014-0230, CVE-2014-7810 Package Information: https://launchpad.net/ubuntu/+source/tomcat7/7.0.56-2ubuntu0.1 https://launchpad.net/ubuntu/+source/tomcat7/7.0.55-1ubuntu0.2 https://launchpad.net/ubuntu/+source/tomcat7/7.0.52-1ubuntu0.3 . Apache vulnerabilities outlined in Ubuntu Security Advisory USN-2785-2 addressing severe flaws affecting the system.. Tomcat Vulnerabilities, Ubuntu Security Notice, Critical Issues, Resource Exhaustion, Security Patch. . Severity: Critical. LinuxSecurity.com Team

Jun 25, 2015 •Critical Ubuntu