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Category:   Application (Web Server/CGI)  >   Red Hat JBoss Vendors:   Red Hat
(Red Hat Issues Fix) Red Hat JBoss EAP RichFaces Access Control Bug Lets Remote Users Execute Arbitrary Code on the Target System
SecurityTracker Alert ID:  1042087
SecurityTracker URL:  http://securitytracker.com/id/1042087
CVE Reference:   CVE-2018-14667   (Links to External Site)
Date:  Nov 13 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Red Hat JBoss. A remote user can execute arbitrary code on the target system.

A remote user can send a specially crafted UserResource RichFaces expression language that contains a tainted java serialized object org.ajax4jsf.resource.UserResource$UriData expression that will trigger deserialization after clearing white list protections. As a result, arbitrary code may be executed on the target system.

Joao Filho Matos Figueiredo reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2018:3581

Vendor URL:  access.redhat.com/errata/RHSA-2018:3581 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Nov 6 2018 Red Hat JBoss EAP RichFaces Access Control Bug Lets Remote Users Execute Arbitrary Code on the Target System



 Source Message Contents

Subject:  [RHSA-2018:3581-01] Critical: Red Hat JBoss BRMS 5.3.1 security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: Red Hat JBoss BRMS 5.3.1 security update
Advisory ID:       RHSA-2018:3581-01
Product:           Red Hat Decision Manager
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:3581
Issue date:        2018-11-13
CVE Names:         CVE-2018-14667 
=====================================================================

1. Summary:

A security update is now available for Red Hat JBoss BRMS 5.3.1.

Red Hat Product Security has rated this update as having a security impact
of Critical. 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. Description:

Red Hat JBoss BRMS is a business rules management system for the
management, storage, creation, modification, and deployment of JBoss Rules.

This asynchronous patch is a security update for the RichFaces package in
standalone versions of Red Hat JBoss BRMS 5.3.1.

Security Fix(es):

* RichFaces: Expression Language injection via UserResource allows for
unauthenticated remote code execution (CVE-2018-14667)

See https://access.redhat.com/solutions/3660371 for specific information
regarding this flaw.

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank Joao Filho Matos Figueiredo for reporting this
issue.

3. Solution:

The References section of this erratum contains a download link (you must
log in to download the update). Before applying the update, back up your
existing Red Hat JBoss BRMS installation (including its databases,
applications, configuration files, and so on).

Note that it is recommended to halt the Red Hat JBoss BRMS server by
stopping the JBoss Application Server process before installing this
update, and then after installing the update, restart the Red Hat JBoss
BRMS server by starting the JBoss Application Server process.

4. Bugs fixed (https://bugzilla.redhat.com/):

1639139 - CVE-2018-14667 RichFaces: Expression Language injection via UserResource allows for unauthenticated remote code execution

5. References:

https://access.redhat.com/security/cve/CVE-2018-14667
https://access.redhat.com/security/updates/classification/#critical
https://access.redhat.com/solutions/3660371
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=securityPatches&version=5.3.1

6. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2018 Red Hat, Inc.
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