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

Synopsis:          Important: Red Hat JBoss Core Services Apache HTTP Server
 2.4.23 security update 
Advisory ID:       RHSA-2017:3475-01
Product:           Red Hat JBoss Core Services
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:3475
Issue date:        2017-12-15
CVE Names:         CVE-2017-3167 CVE-2017-3169 CVE-2017-7679 
                   CVE-2017-9798 CVE-2017-12613 
=====================================================================

1. Summary:

An update is now available for Red Hat JBoss Core Services.

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 Core Services is a set of supplementary software for Red Hat
JBoss middleware products. This software, such as Apache HTTP Server, is
common to multiple JBoss middleware products, and is packaged under Red Hat
JBoss Core Services to allow for faster distribution of updates, and for a
more consistent update experience.

This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.23
Service Pack 3 serves as a replacement of Red Hat JBoss Core Services
Apache HTTP Server 2.4.23, and includes bug fixes (including fixes from
previous Service Pack 1 and 2), which are documented in the Release Notes
document linked to in the References. 

Security Fix(es):

* An out-of-bounds array dereference was found in apr_time_exp_get(). An
attacker could abuse an unvalidated usage of this function to cause a
denial of service or potentially lead to data leak. (CVE-2017-12613)

* It was discovered that the use of httpd's ap_get_basic_auth_pw() API
function outside of the authentication phase could lead to authentication
bypass. A remote attacker could possibly use this flaw to bypass required
authentication if the API was used incorrectly by one of the modules used
by httpd. (CVE-2017-3167)

* A NULL pointer dereference flaw was found in the httpd's mod_ssl module.
A remote attacker could use this flaw to cause an httpd child process to
crash if another module used by httpd called a certain API function during
the processing of an HTTPS request. (CVE-2017-3169)

* A buffer over-read flaw was found in the httpd's mod_mime module. A user
permitted to modify httpd's MIME configuration could use this flaw to cause
httpd child process to crash. (CVE-2017-7679)

* 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 Hanno Böck for reporting CVE-2017-9798.

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/):

1463194 - CVE-2017-3167 httpd: ap_get_basic_auth_pw() authentication bypass
1463197 - CVE-2017-3169 httpd: mod_ssl NULL pointer dereference
1463207 - CVE-2017-7679 httpd: mod_mime buffer overread
1490344 - CVE-2017-9798 httpd: Use-after-free by limiting unregistered HTTP
 method (Optionsbleed)
1506523 - CVE-2017-12613 apr: Out-of-bounds array deref in apr_time_exp*()
 functions

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

JBCS-404 - Text errata for httpd 2.4.23.SP3

6. References:

https://access.redhat.com/security/cve/CVE-2017-3167
https://access.redhat.com/security/cve/CVE-2017-3169
https://access.redhat.com/security/cve/CVE-2017-7679
https://access.redhat.com/security/cve/CVE-2017-9798
https://access.redhat.com/security/cve/CVE-2017-12613
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.apachehttp&downloadType=securityPatches&version=2.4.23
https://access.redhat.com/documentation/en/red-hat-jboss-core-services/

7. 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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