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Sigurnosni nedostaci programskog paketa eap7-jboss-ec2-eap

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Red Hat Security Advisory

Synopsis: Important: eap7-jboss-ec2-eap security update
Advisory ID: RHSA-2018:0005-01
Product: Red Hat JBoss Enterprise Application Platform
Advisory URL:
Issue date: 2018-01-03
CVE Names: CVE-2016-6346 CVE-2017-7559 CVE-2017-7561
CVE-2017-12165 CVE-2017-12167 CVE-2017-12189

1. Summary:

An update for eap7-jboss-ec2-eap is now available for Red Hat JBoss
Enterprise Application Platform 7.0 for Red Hat Enterprise Linux 6 and Red
Hat JBoss Enterprise Application Platform 7.0 for Red Hat Enterprise Linux

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.

2. Relevant releases/architectures:

Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server – noarch
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server – noarch

3. Description:

The eap7-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 eap7-jboss-ec2-eap package has been updated to ensure
compatibility with Red Hat JBoss Enterprise Application Platform 7.0.9.

Refer to the JBoss Enterprise Application Platform 7.0.9 Release Notes,
linked to in the References section, for information on the most
significant bug fixes and enhancements included in this release.

Security Fix(es):

* It was found that Apache Lucene would accept an object from an
unauthenticated user that could be manipulated through subsequent post
requests. An attacker could use this flaw to assemble an object that could
permit execution of arbitrary code if the server enabled Apache Solr’s
Config API. (CVE-2017-12629)

* It was discovered that the jboss init script performed unsafe file
handling which could result in local privilege escalation. (CVE-2017-12189)

* 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)

* It was found that the fix for CVE-2017-2666 was incomplete and invalid
characters are still allowed in the query string and path parameters. This
could be exploited, in conjunction with a proxy that also permitted the
invalid characters but with a different interpretation, to inject data into
the HTTP response. By manipulating the HTTP response the attacker could
poison a web-cache, perform an XSS attack, or obtain sensitive information
from requests other than their own. (CVE-2017-7559)

* It was discovered that the CORS Filter did not add an HTTP Vary header
indicating that the response varies depending on Origin. This permitted
client and server side cache poisoning in some circumstances.

* It was found that properties based files of the management and the
application realm configuration that contain user to role mapping are world
readable allowing access to users and roles information to all the users
logged in to the system. (CVE-2017-12167)

* It was discovered that Undertow processes http request headers with
unusual whitespaces which can cause possible http request smuggling.

Red Hat would like to thank Mikhail Egorov (Odin) for reporting
CVE-2016-6346. The CVE-2017-7559 and CVE-2017-12165 issues were discovered
by Stuart Douglas (Red Hat); the CVE-2017-7561 issue was discovered by
Jason Shepherd (Red Hat Product Security); and the CVE-2017-12167 issue was
discovered by Brian Stansberry (Red Hat) and Jeremy Choi (Red Hat).

4. 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:

5. Bugs fixed (

1372120 – CVE-2016-6346 RESTEasy: Abuse of GZIPInterceptor in RESTEasy can lead to denial of service attack
1481665 – CVE-2017-7559 undertow: HTTP Request smuggling vulnerability (incomplete fix of CVE-2017-2666)
1483823 – CVE-2017-7561 resteasy: Vary header not added by CORS filter leading to cache poisoning
1490301 – CVE-2017-12165 undertow: improper whitespace parsing leading to potential HTTP request smuggling
1491612 – CVE-2017-12167 EAP-7: Wrong privileges on multiple property files
1499631 – CVE-2017-12189 jboss: unsafe chown of server.log in jboss init script allows privilege escalation (Incomplete fix for CVE-2016-8656)
1501529 – CVE-2017-12629 Solr: Code execution via entity expansion

6. JIRA issues fixed (

JBEAP-12351 – jboss-ec2-eap for EAP 7.0.9

7. Package List:

Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server:



Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server:



These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from

8. References:

9. Contact:

The Red Hat security contact is <>. More contact
details at

Copyright 2018 Red Hat, Inc.
Version: GnuPG v1


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AutorPetar Bertok
Cert idNCERT-REF-2018-01-0019-ADV
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