(RHSA-2013:1028) Important: Fuse ESB Enterprise 7.1.0 update


Fuse ESB Enterprise, based on Apache ServiceMix, provides an integration platform. This release of Fuse ESB Enterprise 7.1.0 roll up patch 1 is an update to Fuse ESB Enterprise 7.1.0 and includes bug fixes. Refer to the readme file included with the patch files for information about the bug fixes. The following security issues are also fixed with this release: XML encryption backwards compatibility attacks were found against various frameworks, including Apache CXF. An attacker could force a server to use insecure, legacy cryptosystems, even when secure cryptosystems were enabled on endpoints. By forcing the use of legacy cryptosystems, flaws such as CVE-2011-1096 and CVE-2011-2487 would be exposed, allowing plain text to be recovered from cryptograms and symmetric keys. (CVE-2012-5575) Note: Automatic checks to prevent CVE-2012-5575 are only run when WS-SecurityPolicy is used to enforce security requirements. It is best practice to use WS-SecurityPolicy to enforce security requirements. A flaw in JRuby's JSON gem allowed remote attacks by creating different types of malicious objects. For example, it could initiate a denial of service attack through resource consumption by using a JSON document to create arbitrary Ruby symbols, which were never garbage collected. It could also be exploited to create internal objects which could allow a SQL injection attack. (CVE-2013-0269) It was discovered that JRuby's REXML library did not properly restrict XML entity expansion. An attacker could use this flaw to cause a denial of service by tricking a Ruby application using REXML to read text nodes from specially-crafted XML content, which will result in REXML consuming large amounts of system memory. (CVE-2013-1821) Multiple denial of service flaws were found in the way the Apache CXF StAX parser implementation processed certain XML files. If a web service utilized the StAX parser, a remote attacker could provide a specially-crafted XML file that, when processed, would lead to excessive CPU and memory consumption. (CVE-2013-2160) Note: Fuse ESB Enterprise 7.1.0 ships JRuby as part of the camel-ruby component, which allows users to define Camel routes in Ruby. The default use of JRuby in Fuse ESB Enterprise 7.1.0 does not appear to expose either CVE-2013-0269 or CVE-2013-1821. If the version of JRuby shipped with Fuse ESB Enterprise 7.1.0 was used to build a custom application, then these flaws could be exposed. Red Hat would like to thank Tibor Jager, Kenneth G. Paterson and Juraj Somorovsky of Ruhr-University Bochum for reporting CVE-2012-5575; Ruby on Rails upstream for reporting CVE-2013-0269; and Andreas Falkenberg of SEC Consult Deutschland GmbH, and Christian Mainka, Juraj Somorovsky and Joerg Schwenk of Ruhr-University Bochum for reporting CVE-2013-2160. Upstream acknowledges Thomas Hollstegge of Zweitag and Ben Murphy as the original reporters of CVE-2013-0269. All users of Fuse ESB Enterprise 7.1.0 as provided from the Red Hat Customer Portal are advised to upgrade to Fuse ESB Enterprise 7.1.0 roll up patch 1.