Red Hat Security Advisory: resteasy security update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2012:1059 Final 1 1 2012-07-05T19:20:00Z Current version 2012-07-05T19:20:00Z 2012-07-05T19:20:00Z Red Hat rhsa-to-cvrf 1.0.1484 2012-07-05T19:27:02Z Updated resteasy packages that fix one security issue are now available for JBoss Enterprise Application Platform 5.1.2 for Red Hat Enterprise Linux 4, 5, and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. RESTEasy provides various frameworks to help you build RESTful web services and RESTful Java applications. It was found that RESTEasy was vulnerable to XML External Entity (XXE) attacks. If a remote attacker submitted a request containing an external XML entity to a RESTEasy endpoint, the entity would be resolved, allowing the attacker to read files accessible to the user running the application server. This flaw affected DOM (Document Object Model) Document and JAXB (Java Architecture for XML Binding) input. (CVE-2012-0818) Note: The fix for CVE-2012-0818 is not enabled by default. This update adds a new configuration option to disable entity expansion in RESTEasy. If applications on your server expose RESTEasy XML endpoints, a resteasy.document.expand.entity.references configuration snippet must be added to their web.xml file to disable entity expansion in RESTEasy. Refer to Red Hat Bugzilla bug 785631 for details. Warning: Before applying this update, back up your JBoss Enterprise Application Platform's "jboss-as/server/[PROFILE]/deploy/" directory, along with all other customized configuration files. Users of JBoss Enterprise Application Platform 5.1.2 on Red Hat Enterprise Linux 4, 5, and 6 should upgrade to these updated packages, which correct this issue. The JBoss server process must be restarted for this update to take effect. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate https://rhn.redhat.com/errata/RHSA-2012-1059.html https://rhn.redhat.com/errata/RHSA-2012-1059.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/updates/classification/#moderate https://bugzilla.redhat.com/show_bug.cgi?id=785631 https://bugzilla.redhat.com/show_bug.cgi?id=785631 JBoss Enterprise Application Platform 5 for RHEL 4 AS JBoss Enterprise Application Platform 5 for RHEL 6 Server JBoss Enterprise Application Platform 5 for RHEL 4 ES JBoss Enterprise Application Platform 5 for RHEL 5 Server resteasy-1.2.1-10.CP02_patch01.1.ep5.el4.src.rpm resteasy-1.2.1-10.CP02_patch01.1.ep5.el5.src.rpm resteasy-1.2.1-10.CP02_patch01.1.ep5.el6.src.rpm resteasy-1.2.1-10.CP02_patch01.1.ep5.el4 as a component of JBoss Enterprise Application Platform 5 for RHEL 4 AS resteasy-1.2.1-10.CP02_patch01.1.ep5.el6 as a component of JBoss Enterprise Application Platform 5 for RHEL 6 Server resteasy-1.2.1-10.CP02_patch01.1.ep5.el4 as a component of JBoss Enterprise Application Platform 5 for RHEL 4 ES resteasy-1.2.1-10.CP02_patch01.1.ep5.el5 as a component of JBoss Enterprise Application Platform 5 for RHEL 5 Server It was found that RESTEasy was vulnerable to XML External Entity (XXE) attacks. If a remote attacker submitted a request containing an external XML entity to a RESTEasy endpoint, the entity would be resolved, allowing the attacker to read files accessible to the user running the application server. This flaw affected DOM (Document Object Model) Document and JAXB (Java Architecture for XML Binding) input. Note: The fix for CVE-2012-0818 is not enabled by default. This update adds a new configuration option to disable entity expansion in RESTEasy. If applications on your server expose RESTEasy XML endpoints, a resteasy.document.expand.entity.references configuration snippet must be added to their web.xml file to disable entity expansion in RESTEasy. Refer to Red Hat Bugzilla bug 785631 for details. 2012-01-24T00:00:00Z 2011-12-30T00:00:00Z CVE-2012-0818 4AS-JBEAP-5:resteasy-1.2.1-10.CP02_patch01.1.ep5.el4 4ES-JBEAP-5:resteasy-1.2.1-10.CP02_patch01.1.ep5.el4 5Server-JBEAP-5:resteasy-1.2.1-10.CP02_patch01.1.ep5.el5 6Server-JBEAP-5:resteasy-1.2.1-10.CP02_patch01.1.ep5.el6 Moderate 5 AV:N/AC:L/Au:N/C:P/I:N/A:N Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258 https://rhn.redhat.com/errata/RHSA-2012-1059.html https://www.redhat.com/security/data/cve/CVE-2012-0818.html CVE-2012-0818 https://bugzilla.redhat.com/show_bug.cgi?id=785631 bz#785631: CVE-2012-0818 RESTEasy: XML eXternal Entity (XXE) flaw