An update for c-ares is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,

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

Synopsis:          Important: c-ares security update
Advisory ID:       RHSA-2023:3583-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:3583
Issue date:        2023-06-14
CVE Names:         CVE-2023-32067 
====================================================================
1. Summary:

An update for c-ares is now available for Red Hat Enterprise Linux 9.0
Extended Update Support.

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. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream EUS (v.9.0) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS EUS (v.9.0) - aarch64, ppc64le, s390x, x86_64

3. Description:

The c-ares C library defines asynchronous DNS (Domain Name System) requests
and provides name resolving API.

Security Fix(es):

* c-ares: 0-byte UDP payload Denial of Service (CVE-2023-32067)

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

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

2209502 - CVE-2023-32067 c-ares: 0-byte UDP payload Denial of Service

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v.9.0):

aarch64:
c-ares-debuginfo-1.17.1-5.el9_0.1.aarch64.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.aarch64.rpm
c-ares-devel-1.17.1-5.el9_0.1.aarch64.rpm

ppc64le:
c-ares-debuginfo-1.17.1-5.el9_0.1.ppc64le.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.ppc64le.rpm
c-ares-devel-1.17.1-5.el9_0.1.ppc64le.rpm

s390x:
c-ares-debuginfo-1.17.1-5.el9_0.1.s390x.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.s390x.rpm
c-ares-devel-1.17.1-5.el9_0.1.s390x.rpm

x86_64:
c-ares-debuginfo-1.17.1-5.el9_0.1.i686.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.x86_64.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.i686.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.x86_64.rpm
c-ares-devel-1.17.1-5.el9_0.1.i686.rpm
c-ares-devel-1.17.1-5.el9_0.1.x86_64.rpm

Red Hat Enterprise Linux BaseOS EUS (v.9.0):

Source:
c-ares-1.17.1-5.el9_0.1.src.rpm

aarch64:
c-ares-1.17.1-5.el9_0.1.aarch64.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.aarch64.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.aarch64.rpm

ppc64le:
c-ares-1.17.1-5.el9_0.1.ppc64le.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.ppc64le.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.ppc64le.rpm

s390x:
c-ares-1.17.1-5.el9_0.1.s390x.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.s390x.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.s390x.rpm

x86_64:
c-ares-1.17.1-5.el9_0.1.i686.rpm
c-ares-1.17.1-5.el9_0.1.x86_64.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.i686.rpm
c-ares-debuginfo-1.17.1-5.el9_0.1.x86_64.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.i686.rpm
c-ares-debugsource-1.17.1-5.el9_0.1.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-2023-32067
https://access.redhat.com/security/updates/classification#important

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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