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

Synopsis:          Moderate: expat security update
Advisory ID:       RHSA-2023:0337-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:0337
Issue date:        2023-01-23
CVE Names:         CVE-2022-43680
====================================================================
1. Summary:

An update for expat is now available for Red Hat Enterprise Linux 9.

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. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 9) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 9) - aarch64, ppc64le, s390x, x86_64

3. Description:

Expat is a C library for parsing XML documents.

Security Fix(es):

* expat: use-after free caused by overeager destruction of a shared DTD in
XML_ExternalEntityParserCreate (CVE-2022-43680)

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.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, applications using the Expat library
must be restarted for the update to take effect.

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

2140059 - CVE-2022-43680 expat: use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate

6. Package List:

Red Hat Enterprise Linux AppStream (v. 9):

aarch64:
expat-debuginfo-2.4.9-1.el9_1.1.aarch64.rpm
expat-debugsource-2.4.9-1.el9_1.1.aarch64.rpm
expat-devel-2.4.9-1.el9_1.1.aarch64.rpm

ppc64le:
expat-debuginfo-2.4.9-1.el9_1.1.ppc64le.rpm
expat-debugsource-2.4.9-1.el9_1.1.ppc64le.rpm
expat-devel-2.4.9-1.el9_1.1.ppc64le.rpm

s390x:
expat-debuginfo-2.4.9-1.el9_1.1.s390x.rpm
expat-debugsource-2.4.9-1.el9_1.1.s390x.rpm
expat-devel-2.4.9-1.el9_1.1.s390x.rpm

x86_64:
expat-debuginfo-2.4.9-1.el9_1.1.i686.rpm
expat-debuginfo-2.4.9-1.el9_1.1.x86_64.rpm
expat-debugsource-2.4.9-1.el9_1.1.i686.rpm
expat-debugsource-2.4.9-1.el9_1.1.x86_64.rpm
expat-devel-2.4.9-1.el9_1.1.i686.rpm
expat-devel-2.4.9-1.el9_1.1.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 9):

Source:
expat-2.4.9-1.el9_1.1.src.rpm

aarch64:
expat-2.4.9-1.el9_1.1.aarch64.rpm
expat-debuginfo-2.4.9-1.el9_1.1.aarch64.rpm
expat-debugsource-2.4.9-1.el9_1.1.aarch64.rpm

ppc64le:
expat-2.4.9-1.el9_1.1.ppc64le.rpm
expat-debuginfo-2.4.9-1.el9_1.1.ppc64le.rpm
expat-debugsource-2.4.9-1.el9_1.1.ppc64le.rpm

s390x:
expat-2.4.9-1.el9_1.1.s390x.rpm
expat-debuginfo-2.4.9-1.el9_1.1.s390x.rpm
expat-debugsource-2.4.9-1.el9_1.1.s390x.rpm

x86_64:
expat-2.4.9-1.el9_1.1.i686.rpm
expat-2.4.9-1.el9_1.1.x86_64.rpm
expat-debuginfo-2.4.9-1.el9_1.1.i686.rpm
expat-debuginfo-2.4.9-1.el9_1.1.x86_64.rpm
expat-debugsource-2.4.9-1.el9_1.1.i686.rpm
expat-debugsource-2.4.9-1.el9_1.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2022-43680
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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