RHSA-2017:0829 - Security Advisory

Topic

An update for jboss-ec2-eap is now available for Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6.

Red Hat Product Security has rated this update as having a security impact of Important. 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

The jboss-ec2-eap packages provide scripts for Red Hat JBoss Enterprise Application Platform running on the Amazon Web Services (AWS) Elastic Compute Cloud (EC2).

With this update, the jboss-ec2-eap package has been updated to ensure compatibility with Red Hat JBoss Enterprise Application Platform 6.4.14.

Security Fix(es):

• It was discovered that EAP packages in certain versions of Red Hat Enterprise Linux use incorrect permissions for /etc/sysconfig/jbossas configuration files. The file is writable to jboss group (root:jboss, 664). On systems using classic /etc/init.d init scripts (i.e. on Red Hat Enterprise Linux 6 and earlier), the file is sourced by the jboss init script and its content executed with root privileges when jboss service is started, stopped, or restarted. (CVE-2016-8657)
• It was discovered that a programming error in the processing of HTTPS requests in the Apache Tomcat servlet and JSP engine may result in denial of service via an infinite loop. (CVE-2017-6056)
• It was found that GZIPInterceptor is enabled when not necessarily required in RESTEasy. An attacker could use this flaw to launch a Denial of Service attack. (CVE-2016-6346)

Red Hat would like to thank Mikhail Egorov (Odin) for reporting the
CVE-2016-6346 issue.

Solution

Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

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

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

Affected Products

• JBoss Enterprise Application Platform 6.4 for RHEL 6 x86_64
• JBoss Enterprise Application Platform 6.4 for RHEL 6 i386
• JBoss Enterprise Application Platform 6 for RHEL 6 x86_64
• JBoss Enterprise Application Platform 6 for RHEL 6 i386

Fixes

• BZ - 1372120 - CVE-2016-6346 RESTEasy: Abuse of GZIPInterceptor in RESTEasy can lead to denial of service attack
• BZ - 1400343 - CVE-2016-8657 jboss: jbossas writable config files allow privilege escalation
• BZ - 1422148 - CVE-2017-6056 tomcat: Infinite loop in the processing of https requests

CVEs

• CVE-2016-6346
• CVE-2016-8657
• CVE-2017-6056

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/documentation/en/red-hat-jboss-enterprise-application-platform/?version=6.4