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

Synopsis:          Moderate: Red Hat JBoss Web Server 3.0.3 security update
Advisory ID:       RHSA-2016:1089-01
Product:           Red Hat JBoss Web Server
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-1089.html
Issue date:        2016-05-17
CVE Names:         CVE-2015-0209 CVE-2015-5312 CVE-2015-5345 
                   CVE-2015-5346 CVE-2015-5351 CVE-2015-7497 
                   CVE-2015-7498 CVE-2015-7499 CVE-2015-7500 
                   CVE-2015-7941 CVE-2015-7942 CVE-2015-8035 
                   CVE-2015-8241 CVE-2015-8242 CVE-2015-8317 
                   CVE-2015-8710 CVE-2016-0706 CVE-2016-0714 
                   CVE-2016-0763 
=====================================================================

1. Summary:

Red Hat JBoss Web Server 3.0.3 is now available for Red Hat Enterprise
Linux 6 and 7, Solaris, and Microsoft Windows from the Customer Portal.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Web Server is a fully integrated and certified set of
components for hosting Java web applications. It is comprised of the Apache
HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector
(mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat
Native library.

This release of Red Hat JBoss Web Server 3.0.3 serves as a replacement for
Red Hat JBoss Web Server 3.0.2, and includes bug fixes and enhancements,
which are documented in the Release Notes documented linked to in the
References.

Security Fix(es):

* Several denial of service flaws were found in libxml2, a library
providing support for reading, modifying, and writing XML and HTML files. A
remote attacker could provide a specially crafted XML or HTML file that,
when processed by an application using libxml2, would cause that
application to use an excessive amount of CPU, leak potentially sensitive
information, or in certain cases crash the application. (CVE-2015-5312,
CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-7942,
CVE-2015-8035, CVE-2015-8710, CVE-2015-7941, CVE-2015-8241, CVE-2015-8242,
CVE-2015-8317)

* A session fixation flaw was found in the way Tomcat recycled the
requestedSessionSSL field. If at least one web application was configured
to use the SSL session ID as the HTTP session ID, an attacker could reuse a
previously used session ID for further requests. (CVE-2015-5346)

* A CSRF flaw was found in Tomcat's the index pages for the Manager and
Host Manager applications. These applications included a valid CSRF token
when issuing a redirect as a result of an unauthenticated request to the
root of the web application. This token could then be used by an attacker
to perform a CSRF attack. (CVE-2015-5351)

* It was found that several Tomcat session persistence mechanisms could
allow a remote, authenticated user to bypass intended SecurityManager
restrictions and execute arbitrary code in a privileged context via a web
application that placed a crafted object in a session. (CVE-2016-0714)

* A security manager bypass flaw was found in Tomcat that could allow
remote, authenticated users to access arbitrary application data,
potentially resulting in a denial of service. (CVE-2016-0763)

* A use-after-free flaw was found in the way OpenSSL imported malformed
Elliptic Curve private keys. A specially crafted key file could cause an
application using OpenSSL to crash when imported. (CVE-2015-0209)

* It was found that Tomcat could reveal the presence of a directory even
when that directory was protected by a security constraint. A user could
make a request to a directory via a URL not ending with a slash and,
depending on whether Tomcat redirected that request, could confirm whether
that directory existed. (CVE-2015-5345)

* It was found that Tomcat allowed the StatusManagerServlet to be loaded by
a web application when a security manager was configured. This allowed a
web application to list all deployed web applications and expose sensitive
information such as session IDs. (CVE-2016-0706)

Red Hat would like to thank the GNOME project for reporting CVE-2015-7497,
CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-8241, CVE-2015-8242,
and CVE-2015-8317. Upstream acknowledges Kostya Serebryany as the original
reporter of CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, and CVE-2015-7500;
Hugh Davenport as the original reporter of CVE-2015-8241 and CVE-2015-8242;
and Hanno Boeck as the original reporter of CVE-2015-8317.

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 Web Server installation (including all applications
and configuration files).

After installing the updated packages, the httpd daemon will be restarted
automatically.

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

1196737 - CVE-2015-0209 openssl: use-after-free on invalid EC private key import
1213957 - CVE-2015-8710 libxml2: out-of-bounds memory access when parsing an unclosed HTML comment
1274222 - CVE-2015-7941 libxml2: Out-of-bounds memory access
1276297 - CVE-2015-7942 libxml2: heap-based buffer overflow in xmlParseConditionalSections()
1276693 - CVE-2015-5312 libxml2: CPU exhaustion when processing specially crafted XML input
1277146 - CVE-2015-8035 libxml2: DoS when parsing specially crafted XML document if XZ support is enabled
1281862 - CVE-2015-7497 libxml2: Heap-based buffer overflow in xmlDictComputeFastQKey
1281879 - CVE-2015-7498 libxml2: Heap-based buffer overflow in xmlParseXmlDecl
1281925 - CVE-2015-7499 libxml2: Heap-based buffer overflow in xmlGROW
1281930 - CVE-2015-8317 libxml2: Out-of-bounds heap read when parsing file with unfinished xml declaration
1281936 - CVE-2015-8241 libxml2: Buffer overread with XML parser in xmlNextChar
1281943 - CVE-2015-7500 libxml2: Heap buffer overflow in xmlParseMisc
1281950 - CVE-2015-8242 libxml2: Buffer overread with HTML parser in push mode in xmlSAX2TextNode
1311076 - CVE-2015-5351 tomcat: CSRF token leak
1311082 - CVE-2016-0714 tomcat: Security Manager bypass via persistence mechanisms
1311085 - CVE-2015-5346 tomcat: Session fixation
1311087 - CVE-2016-0706 tomcat: security manager bypass via StatusManagerServlet
1311089 - CVE-2015-5345 tomcat: directory disclosure
1311093 - CVE-2016-0763 tomcat: security manager bypass via setGlobalContext()

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

JWS-271 - User submitted session ID
JWS-272 - User submitted session ID
JWS-276 - Welcome File processing refactoring - CVE-2015-5345 low
JWS-277 - Welcome File processing refactoring - CVE-2015-5345 low
JWS-303 - Avoid useless session creation for manager webapps - CVE-2015-5351 moderate
JWS-304 - Restrict another manager servlet - CVE-2016-0706 low
JWS-349 - Session serialization safety - CVE-2016-0714 moderate
JWS-350 - Protect ResourceLinkFactory.setGlobalContext() - CVE-2016-0763 moderate

6. References:

https://access.redhat.com/security/cve/CVE-2015-0209
https://access.redhat.com/security/cve/CVE-2015-5312
https://access.redhat.com/security/cve/CVE-2015-5345
https://access.redhat.com/security/cve/CVE-2015-5346
https://access.redhat.com/security/cve/CVE-2015-5351
https://access.redhat.com/security/cve/CVE-2015-7497
https://access.redhat.com/security/cve/CVE-2015-7498
https://access.redhat.com/security/cve/CVE-2015-7499
https://access.redhat.com/security/cve/CVE-2015-7500
https://access.redhat.com/security/cve/CVE-2015-7941
https://access.redhat.com/security/cve/CVE-2015-7942
https://access.redhat.com/security/cve/CVE-2015-8035
https://access.redhat.com/security/cve/CVE-2015-8241
https://access.redhat.com/security/cve/CVE-2015-8242
https://access.redhat.com/security/cve/CVE-2015-8317
https://access.redhat.com/security/cve/CVE-2015-8710
https://access.redhat.com/security/cve/CVE-2016-0706
https://access.redhat.com/security/cve/CVE-2016-0714
https://access.redhat.com/security/cve/CVE-2016-0763
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_Web_Server/3/html-single/3.0.3_Release_Notes/index.html
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=distributions&product=webserver&version=3.0.3

7. Contact:

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

Copyright 2016 Red Hat, Inc.
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