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

Synopsis:          Important: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP11 security update
Advisory ID:       RHSA-2022:1390-01
Product:           Red Hat JBoss Core Services
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:1390
Issue date:        2022-04-20
CVE Names:         CVE-2021-3516 CVE-2021-3517 CVE-2021-3518
                   CVE-2021-3537 CVE-2021-3541 CVE-2022-0778
                   CVE-2022-22720 CVE-2022-23308
====================================================================
1. Summary:

Red Hat JBoss Core Services Apache HTTP Server 2.4.37 Service Pack 11 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 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 adds the new Apache HTTP Server 2.4.37 Service Pack 11
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 10 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):

* jbcs-httpd24-httpd: httpd: HTTP request smuggling vulnerability in Apache
HTTP Server 2.4.52 and earlier (CVE-2022-22720)
* libxml2: use-after-free in xmlXIncludeDoProcess() in xinclude.c
(CVE-2021-3518)
* libxml2: heap-based buffer overflow in xmlEncodeEntitiesInternal() in
entities.c (CVE-2021-3517)
* libxml2: use-after-free in xmlEncodeEntitiesInternal() in entities.c
(CVE-2021-3516)
* libxml2: Exponential entity expansion attack bypasses all existing
protection mechanisms (CVE-2021-3541)
* libxml2: NULL pointer dereference when post-validating mixed content
parsed in recovery mode (CVE-2021-3537)
* libxml2: Use-after-free of ID and IDREF attributes (CVE-2022-23308)
* openssl: Infinite loop in BN_mod_sqrt() reachable when parsing
certificates (CVE-2022-0778)

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/):

1950515 - CVE-2021-3541 libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms
1954225 - CVE-2021-3516 libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c
1954232 - CVE-2021-3517 libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c
1954242 - CVE-2021-3518 libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c
1956522 - CVE-2021-3537 libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode
2056913 - CVE-2022-23308 libxml2: Use-after-free of ID and IDREF attributes
2062202 - CVE-2022-0778 openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates
2064321 - CVE-2022-22720 httpd: Errors encountered during the discarding of request body lead to HTTP request smuggling

5. References:

https://access.redhat.com/security/cve/CVE-2021-3516
https://access.redhat.com/security/cve/CVE-2021-3517
https://access.redhat.com/security/cve/CVE-2021-3518
https://access.redhat.com/security/cve/CVE-2021-3537
https://access.redhat.com/security/cve/CVE-2021-3541
https://access.redhat.com/security/cve/CVE-2022-0778
https://access.redhat.com/security/cve/CVE-2022-22720
https://access.redhat.com/security/cve/CVE-2022-23308
https://access.redhat.com/security/updates/classification/#important

6. Contact:

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

Copyright 2022 Red Hat, Inc.
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