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

Synopsis:          Moderate: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP10 security update
Advisory ID:       RHSA-2021:4613-01
Product:           Red Hat JBoss Core Services
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4613
Issue date:        2021-11-10
CVE Names:         CVE-2019-17567 CVE-2019-20838 CVE-2020-13950 
                   CVE-2020-14155 CVE-2020-35452 CVE-2021-3712 
                   CVE-2021-23840 CVE-2021-23841 CVE-2021-26690 
                   CVE-2021-26691 CVE-2021-30641 
=====================================================================

1. Summary:

Red Hat JBoss Core Services Apache HTTP Server 2.4.37 Service Pack 10 zip
release for Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, and
Microsoft Windows is available.

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 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 adds the new Apache HTTP Server 2.4.37 Service Pack 10
packages that are part of the JBoss Core Services offering.

This release serves as a replacement for Red Hat JBoss Core Services Apache
HTTP Server 2.4.37 Service Pack 9 and includes bug fixes and enhancements.
Refer to the Release Notes for information on the most significant bug
fixes and enhancements included in this release.

Security Fix(es):

* httpd: Single zero byte stack overflow in mod_auth_digest
(CVE-2020-35452)
* httpd: mod_session NULL pointer dereference in parser (CVE-2021-26690)
* httpd: Heap overflow in mod_session (CVE-2021-26691)
* httpd: mod_proxy_wstunnel tunneling of non Upgraded connection
(CVE-2019-17567)
* httpd: MergeSlashes regression (CVE-2021-30641)
* httpd: mod_proxy NULL pointer dereference (CVE-2020-13950)
* jbcs-httpd24-openssl: openssl: NULL pointer dereference in
X509_issuer_and_serial_hash() (CVE-2021-23841)
* openssl: Read buffer overruns processing ASN.1 strings (CVE-2021-3712)
* openssl: integer overflow in CipherUpdate (CVE-2021-23840)
* pcre: buffer over-read in JIT when UTF is disabled (CVE-2019-20838)
* pcre: integer overflow in libpcre (CVE-2020-14155)

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.

3. Solution:

Before applying the update, back up your existing installation, including
all applications, configuration files, databases and database settings, and
so on.

The References section of this erratum contains a download link for the
update. You must be logged in to download the update.

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

1848436 - CVE-2020-14155 pcre: Integer overflow when parsing callout numeric arguments
1848444 - CVE-2019-20838 pcre: Buffer over-read in JIT when UTF is disabled and \X or \R has fixed quantifier greater than 1
1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash()
1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate
1966724 - CVE-2020-35452 httpd: Single zero byte stack overflow in mod_auth_digest
1966729 - CVE-2021-26690 httpd: mod_session: NULL pointer dereference when parsing Cookie header
1966732 - CVE-2021-26691 httpd: mod_session: Heap overflow via a crafted SessionHeader value
1966738 - CVE-2020-13950 httpd: mod_proxy NULL pointer dereference
1966740 - CVE-2019-17567 httpd:  mod_proxy_wstunnel tunneling of non Upgraded connection
1966743 - CVE-2021-30641 httpd: Unexpected URL matching with 'MergeSlashes OFF'
1995634 - CVE-2021-3712 openssl: Read buffer overruns processing ASN.1 strings

5. References:

https://access.redhat.com/security/cve/CVE-2019-17567
https://access.redhat.com/security/cve/CVE-2019-20838
https://access.redhat.com/security/cve/CVE-2020-13950
https://access.redhat.com/security/cve/CVE-2020-14155
https://access.redhat.com/security/cve/CVE-2020-35452
https://access.redhat.com/security/cve/CVE-2021-3712
https://access.redhat.com/security/cve/CVE-2021-23840
https://access.redhat.com/security/cve/CVE-2021-23841
https://access.redhat.com/security/cve/CVE-2021-26690
https://access.redhat.com/security/cve/CVE-2021-26691
https://access.redhat.com/security/cve/CVE-2021-30641
https://access.redhat.com/security/updates/classification/#moderate

6. Contact:

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

Copyright 2021 Red Hat, Inc.
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