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Category:   Application (Web Server/CGI)  >   Red Hat JBoss Vendors:   Red Hat
JBoss Seam Input Validation Flaw in Processing JBoss Expression Language Expressions Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024253
SecurityTracker URL:  http://securitytracker.com/id/1024253
CVE Reference:   CVE-2010-1871   (Links to External Site)
Date:  Jul 27 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.3.0
Description:   A vulnerability was reported in JBoss Seam. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create HTML containing specially crafted parametrized JBoss Expression Language (EL) expressions that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

Meder Kydyraliev of the Google Security Team reported this vulnerability.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0564.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2010-0564.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4, 5

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 30 2013 (CA Issues Fix for CA Service Desk Manager) JBoss Seam Input Validation Flaw in Processing JBoss Expression Language Expressions Lets Remote Users Execute Arbitrary Code
CA has issued a workaround for CA Service Desk Manager.



 Source Message Contents

Subject:  [RHSA-2010:0564-01] Important: jboss-seam2 security update

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

Synopsis:          Important: jboss-seam2 security update
Advisory ID:       RHSA-2010:0564-01
Product:           JBoss Enterprise Application Platform
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0564.html
Issue date:        2010-07-27
CVE Names:         CVE-2010-1871 
=====================================================================

1. Summary:

Updated jboss-seam2 packages that fix one security issue are now available
for JBoss Enterprise Application Platform 4.3 for Red Hat Enterprise Linux
4 and 5.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

JBoss Enterprise Application Platform 4.3.0 for RHEL 4 AS - noarch
JBoss Enterprise Application Platform 4.3.0 for RHEL 4 ES - noarch
JBoss Enterprise Application Platform 4.3.0 for RHEL 5 Server - noarch

3. Description:

The JBoss Seam Framework is an application framework for building web
applications in Java.

An input sanitization flaw was found in the way JBoss Seam processed
certain parametrized JBoss Expression Language (EL) expressions. If a
remote attacker could trick an authenticated JBoss Seam user into visiting
a specially-crafted web page, it could lead to arbitrary code execution.
(CVE-2010-1871)

Red Hat would like to thank Meder Kydyraliev of the Google Security Team
for responsibly reporting this issue.

Users of jboss-seam2 should upgrade to these updated packages, which
contain a backported patch to correct this issue. The JBoss server process
must be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

615956 - CVE-2010-1871 JBoss Seam / Seam2: Improper sanitization of parametrized JBoss EL expressions (ACE)

6. Package List:

JBoss Enterprise Application Platform 4.3.0 for RHEL 4 AS:

Source:
jboss-seam2-2.0.2.FP-1.ep1.24.el4.src.rpm

noarch:
jboss-seam2-2.0.2.FP-1.ep1.24.el4.noarch.rpm
jboss-seam2-docs-2.0.2.FP-1.ep1.24.el4.noarch.rpm

JBoss Enterprise Application Platform 4.3.0 for RHEL 4 ES:

Source:
jboss-seam2-2.0.2.FP-1.ep1.24.el4.src.rpm

noarch:
jboss-seam2-2.0.2.FP-1.ep1.24.el4.noarch.rpm
jboss-seam2-docs-2.0.2.FP-1.ep1.24.el4.noarch.rpm

JBoss Enterprise Application Platform 4.3.0 for RHEL 5 Server:

Source:
jboss-seam2-2.0.2.FP-1.ep1.24.el5.src.rpm

noarch:
jboss-seam2-2.0.2.FP-1.ep1.24.el5.noarch.rpm
jboss-seam2-docs-2.0.2.FP-1.ep1.24.el5.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-1871.html
http://www.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2010 Red Hat, Inc.
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