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

Synopsis:          Important: Red Hat JBoss Web Server security and bug fix update
Advisory ID:       RHSA-2017:3114-01
Product:           Red Hat JBoss Web Server
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:3114
Issue date:        2017-11-02
CVE Names:         CVE-2016-2183 CVE-2017-12615 CVE-2017-12617 
                   CVE-2017-9788 CVE-2017-9798 
=====================================================================

1. Summary:

An update is now available for Red Hat JBoss Enterprise Web Server 2.1.2.

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:

The httpd packages provide the Apache HTTP Server, a powerful, efficient,
and extensible web server.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and
Transport Layer Security (TLS) protocols, as well as a full-strength
general-purpose cryptography library.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer
Pages (JSP) technologies.

This release provides an update to httpd, OpenSSL and Tomcat 6/7 for Red
Hat JBoss Web Server 2. The updates are documented in the Release Notes
document linked to in the References.

This release of Red Hat JBoss Web Server 2.1.2 Service Pack 2 serves as a
update for Red Hat JBoss Web Server 2, and includes bug fixes, which are
documented in the Release Notes document linked to in the References.

Users of Red Hat JBoss Web Server 2 should upgrade to these updated
packages, which resolve several security issues

Security Fix(es):

* It was discovered that the httpd's mod_auth_digest module did not
properly initialize memory before using it when processing certain headers
related to digest authentication. A remote attacker could possibly use this
flaw to disclose potentially sensitive information or cause httpd child
process to crash by sending specially crafted requests to a server.
(CVE-2017-9788)

* A vulnerability was discovered in Tomcat where if a servlet context was
configured with readonly=false and HTTP PUT requests were allowed, an
attacker could upload a JSP file to that context and achieve code
execution. (CVE-2017-12615)

* A vulnerability was discovered in Tomcat where if a servlet context was
configured with readonly=false and HTTP PUT requests were allowed, an
attacker could upload a JSP file to that context and achieve code
execution. (CVE-2017-12617)

* A flaw was found in the way the DES/3DES cipher was used as part of the
TLS/SSL protocol. A man-in-the-middle attacker could use this flaw to
recover some plaintext data by capturing large amounts of encrypted traffic
between TLS/SSL server and client if the communication used a DES/3DES
based ciphersuite. (CVE-2016-2183)

* A use-after-free flaw was found in the way httpd handled invalid and
previously unregistered HTTP methods specified in the Limit directive used
in an .htaccess file. A remote attacker could possibly use this flaw to
disclose portions of the server memory, or cause httpd child process to
crash. (CVE-2017-9798)

Red Hat would like to thank OpenVPN for reporting CVE-2016-2183 and Hanno
BAPck for reporting CVE-2017-9798. Upstream acknowledges Karthikeyan
Bhargavan (Inria) and GaA<<tan Leurent (Inria) as the original reporters of
CVE-2016-2183.

Bug Fix(es):

* Corruption in nodestatsmem in multiple core dumps but in different
functions of each core dump. (BZ#1338640)

* mod_cluster segfaults in process_info() due to wrongly generated
assembler instruction movslq (BZ#1448709)

* CRL checking of very large CRLs fails with OpenSSL 1.0.2 (BZ#1493075)

* The jboss-ews-application-servers zip README contains incomplete
description of fixed CVEs (BZ#1497953)

3. Solution:

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

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/):

1369383 - CVE-2016-2183 SSL/TLS: Birthday attack against 64-bit block ciphers (SWEET32)
1470748 - CVE-2017-9788 httpd: Uninitialized memory reflection in mod_auth_digest
1490344 - CVE-2017-9798 httpd: Use-after-free by limiting unregistered HTTP method (Optionsbleed)
1493075 - Unable to load large CRL openssl problem
1493220 - CVE-2017-12615 tomcat: Remote Code Execution via JSP Upload
1494283 - CVE-2017-12617 tomcat: Remote Code Execution bypass for CVE-2017-12615
1497953 - jboss-ews-application-servers zip README contains incomplete description of fixed CVEs

5. References:

https://access.redhat.com/security/cve/CVE-2016-2183
https://access.redhat.com/security/cve/CVE-2017-12615
https://access.redhat.com/security/cve/CVE-2017-12617
https://access.redhat.com/security/cve/CVE-2017-9788
https://access.redhat.com/security/cve/CVE-2017-9798
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=securityPatches&version=2.1.2
https://access.redhat.com/articles/3227901

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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