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Category:   Application (Web Server/CGI)  >   Red Hat JBoss Vendors:   Red Hat
(Red Hat Issues Fix for Red Hat JBoss BRMS) Apache Batik SVG File XML External Entity Processing Flaw Lets Remote Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1039244
SecurityTracker URL:  http://securitytracker.com/id/1039244
CVE Reference:   CVE-2017-5662   (Links to External Site)
Date:  Aug 29 2017
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Apache Batik. A remote user can conduct XML external entity attacks to obtain files on the target system. Red Hat JBoss BRMS is affected.

A remote user can supply a specially crafted SVG file to the target interface to read files on the target system with the privileges of the target service.

Lars Krapf of Adobe and Pierre Ernst at Salesforce independently reported this vulnerability.

Impact:   A remote user can read files on the target system with the privileges of the target service.
Solution:   Red Hat has issued a fix for Red Hat JBoss BRMS.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2017:2547

Vendor URL:  access.redhat.com/errata/RHSA-2017:2547 (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.
Apr 20 2017 Apache Batik SVG File XML External Entity Processing Flaw Lets Remote Users Obtain Potentially Sensitive Information



 Source Message Contents

Subject:  [RHSA-2017:2547-01] Important: Red Hat JBoss BRMS 6.4.5 security update

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: Red Hat JBoss BRMS 6.4.5 security update
Advisory ID:       RHSA-2017:2547-01
Product:           Red Hat JBoss BRMS
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:2547
Issue date:        2017-08-29
CVE Names:         CVE-2014-9970 CVE-2017-5662 CVE-2017-7525 
=====================================================================

1. Summary:

An update is now available for Red Hat JBoss BRMS.

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. Description:

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

This release of Red Hat JBoss BRMS 6.4.5 serves as a replacement for Red
Hat JBoss BRMS 6.4.4, and includes bug fixes and enhancements, which are
documented in the Release Notes document linked to in the References.

Security Fix(es):

* A deserialization flaw was discovered in the jackson-databind which could
allow an unauthenticated user to perform code execution by sending the
maliciously crafted input to the readValue method of the ObjectMapper.
(CVE-2017-7525)

* A vulnerability was found in Jasypt that would allow an attacker to
perform a timing attack on password hash comparison. (CVE-2014-9970)

* An XXE vulnerability was found in Apache Batik which could allow a remote
attacker to retrieve the files on the vulnerable server's filesystem by
uploading specially crafted SVG images. The vulnerability could also allow
a denial of service condition by performing an amplification attack.
(CVE-2017-5662)

Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting
CVE-2017-7525.

3. Solution:

Before applying the update, back up your existing installation, including
all applications, configuration files, databases and database settings, and
so on.

It is recommended to halt the server by stopping the JBoss Application
Server process before installing this update; after installing the update,
restart the server by starting the JBoss Application Server process.

The References section of this erratum contains a download link (you must
log in to download the update).

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

1443592 - CVE-2017-5662 batik: XML external entity processing vulnerability
1455566 - CVE-2014-9970 jasypt: Vulnerable to timing attack against the password hash comparison
1462702 - CVE-2017-7525 jackson-databind: Deserialization vulnerability via readValue method of ObjectMapper

5. References:

https://access.redhat.com/security/cve/CVE-2014-9970
https://access.redhat.com/security/cve/CVE-2017-5662
https://access.redhat.com/security/cve/CVE-2017-7525
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=securityPatches&version=6.4
https://access.redhat.com/documentation/en/red-hat-jboss-brms/

6. Contact:

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

Copyright 2017 Red Hat, Inc.
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