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Category:   Application (Web Server/CGI)  >   Red Hat JBoss Vendors:   Red Hat
(Red Hat Issues Fix for Red Hat JBoss) Apache Tomcat NIO/NIO2 Connector Management Flaw Lets Remote Users Access Other User's Sessions in Certain Cases
SecurityTracker Alert ID:  1041778
SecurityTracker URL:  http://securitytracker.com/id/1041778
CVE Reference:   CVE-2018-8037   (Links to External Site)
Date:  Oct 3 2018
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Apache Tomcat. A remote user can access other user sessions. Red Hat JBoss is affected.

A remote user can exploit a flaw in the tracking of connection closures in NIO/NIO2 connectors to establish a new connection that re-uses an existing user session.

Dmitry Treskunov reported this vulnerability.

Impact:   A remote user can access another user's session.
Solution:   Red Hat has issued a fix for Red Hat JBoss.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2018:2868

Vendor URL:  access.redhat.com/errata/RHSA-2018:2868 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Jul 26 2018 Apache Tomcat NIO/NIO2 Connector Management Flaw Lets Remote Users Access Other User's Sessions in Certain Cases



 Source Message Contents

Subject:  [RHSA-2018:2868-01] Important: Red Hat JBoss Web Server 5.0 Service Pack 1 security and bug fix update

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

Synopsis:          Important: Red Hat JBoss Web Server 5.0 Service Pack 1 security and bug fix update
Advisory ID:       RHSA-2018:2868-01
Product:           Red Hat JBoss Web Server
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:2868
Issue date:        2018-10-03
CVE Names:         CVE-2018-8037 
=====================================================================

1. Summary:

An update is now available for Red Hat JBoss Web Server 5.0 for RHEL 6 and
Red Hat JBoss Web Server 5.0 for RHEL 7.

Red Hat Product Security has rated this release 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 Web Server 5.0 for RHEL 6 Server - noarch
Red Hat JBoss Web Server 5.0 for RHEL 7 Server - noarch

3. Description:

Red Hat JBoss Web Server is a fully integrated and certified set of
components for hosting Java web applications. It is comprised of the Apache
Tomcat Servlet container, JBoss HTTP Connector (mod_cluster), the
PicketLink Vault extension for Apache Tomcat, and the Tomcat Native
library.

This release of Red Hat JBoss Web Server 5.0 Service Pack 1 serves as a
replacement for Red Hat JBoss Web Server 5.0, and includes bug fixes, which
are documented in the Release Notes document linked to in the References.

Security Fix(es):

* tomcat: Information Disclosure (CVE-2018-8037)

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

4. Solution:

Before applying the update, back up your existing Red Hat JBoss Web Server
installation (including all applications and configuration files).

For details on how to apply this update, refer to:

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

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

1607582 - CVE-2018-8037 tomcat: Due to a mishandling of close in NIO/NIO2 connectors user sessions can get mixed up

6. JIRA issues fixed (https://issues.jboss.org/):

JWS-1028 - Failures in jBPM embedded use case with H2 database
JWS-1064 - Update the Tomcat fork of Commons DBCP 2 to 2.4.0
JWS-1065 - Tomcat Commons Pool Update
JWS-1121 - Update the internal fork of Apache Commons DBCP 2 to abc0484 (2018-08-09) to pick up some bug fixes and enhancements
JWS-1124 - ARJUNA016082: Synchronizations are not allowed! Transaction status isActionStatus.RUNNING when running jBPM engine in KIE server deployed to Tomcat
JWS-996 - Connection leak during XATransaction in high load

7. Package List:

Red Hat JBoss Web Server 5.0 for RHEL 6 Server:

Source:
jws5-tomcat-9.0.7-12.redhat_12.1.el6jws.src.rpm

noarch:
jws5-tomcat-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-admin-webapps-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-docs-webapp-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-el-3.0-api-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-javadoc-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-jsp-2.3-api-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-jsvc-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-lib-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-selinux-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-servlet-4.0-api-9.0.7-12.redhat_12.1.el6jws.noarch.rpm
jws5-tomcat-webapps-9.0.7-12.redhat_12.1.el6jws.noarch.rpm

Red Hat JBoss Web Server 5.0 for RHEL 7 Server:

Source:
jws5-tomcat-9.0.7-12.redhat_12.1.el7jws.src.rpm

noarch:
jws5-tomcat-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-admin-webapps-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-docs-webapp-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-el-3.0-api-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-javadoc-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-jsp-2.3-api-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-jsvc-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-lib-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-selinux-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-servlet-4.0-api-9.0.7-12.redhat_12.1.el7jws.noarch.rpm
jws5-tomcat-webapps-9.0.7-12.redhat_12.1.el7jws.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://access.redhat.com/security/team/key/

8. References:

https://access.redhat.com/security/cve/CVE-2018-8037
https://access.redhat.com/security/updates/classification/#important

9. 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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