RHSA-2016:1087 - Security Advisory

Topic

Red Hat JBoss Web Server 3.0.3 is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector (mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat Native library.

This release of Red Hat JBoss Web Server 3.0.3 serves as a replacement for Red Hat JBoss Web Server 3.0.2, and includes bug fixes and enhancements, which are documented in the Release Notes documented linked to in the References.

Security Fix(es):

• A session fixation flaw was found in the way Tomcat recycled the requestedSessionSSL field. If at least one web application was configured to use the SSL session ID as the HTTP session ID, an attacker could reuse a previously used session ID for further requests. (CVE-2015-5346)
• A CSRF flaw was found in Tomcat's the index pages for the Manager and Host Manager applications. These applications included a valid CSRF token when issuing a redirect as a result of an unauthenticated request to the root of the web application. This token could then be used by an attacker to perform a CSRF attack. (CVE-2015-5351)
• It was found that several Tomcat session persistence mechanisms could allow a remote, authenticated user to bypass intended SecurityManager restrictions and execute arbitrary code in a privileged context via a web application that placed a crafted object in a session. (CVE-2016-0714)
• A security manager bypass flaw was found in Tomcat that could allow remote, authenticated users to access arbitrary application data, potentially resulting in a denial of service. (CVE-2016-0763)
• It was found that Tomcat could reveal the presence of a directory even when that directory was protected by a security constraint. A user could make a request to a directory via a URL not ending with a slash and, depending on whether Tomcat redirected that request, could confirm whether that directory existed. (CVE-2015-5345)
• It was found that Tomcat allowed the StatusManagerServlet to be loaded by a web application when a security manager was configured. This allowed a web application to list all deployed web applications and expose sensitive information such as session IDs. (CVE-2016-0706)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.

Affected Products

• JBoss Enterprise Web Server 3 for RHEL 6 x86_64
• JBoss Enterprise Web Server 3 for RHEL 6 i386

Fixes

• BZ - 1311076 - CVE-2015-5351 tomcat: CSRF token leak
• BZ - 1311082 - CVE-2016-0714 tomcat: Security Manager bypass via persistence mechanisms
• BZ - 1311085 - CVE-2015-5346 tomcat: Session fixation
• BZ - 1311087 - CVE-2016-0706 tomcat: security manager bypass via StatusManagerServlet
• BZ - 1311089 - CVE-2015-5345 tomcat: directory disclosure
• BZ - 1311093 - CVE-2016-0763 tomcat: security manager bypass via setGlobalContext()

CVEs

• CVE-2015-5345
• CVE-2015-5346
• CVE-2015-5351
• CVE-2016-0706
• CVE-2016-0714
• CVE-2016-0763

References

• http://www.redhat.com/security/updates/classification/#normal