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

Synopsis:          Moderate: OpenJDK 11.0.18 Security Update for Windows Builds
Advisory ID:       RHSA-2023:0353-01
Product:           OpenJDK
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:0353
Issue date:        2023-01-23
CVE Names:         CVE-2023-21835 CVE-2023-21843
====================================================================
1. Summary:

The Red Hat Build of OpenJDK 11 (java-11-openjdk) is now available for
Windows.

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:

The OpenJDK 11 packages provide the OpenJDK 11 Java Runtime Environment and
the OpenJDK 11 Java Software Development Kit.

This release of the Red Hat build of OpenJDK 11 (11.0.18) for Windows
serves as a replacement for the Red Hat build of OpenJDK 11 (11.0.17) and
includes security and bug fixes, and enhancements. For further information,
refer to the release notes linked to in the References section.

Security Fix(es):

* OpenJDK: handshake DoS attack against DTLS connections (CVE-2023-21835)

* OpenJDK: soundbank URL remote loading (CVE-2023-21843)

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 this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/documentation/en-us/openjdk/11/html/installing_and_using_openjdk_11_for_windows/index

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

2160421 - CVE-2023-21835 OpenJDK: handshake DoS attack against DTLS connections (JSSE, 8287411)
2160475 - CVE-2023-21843 OpenJDK: soundbank URL remote loading (Sound, 8293742)

5. References:

https://access.redhat.com/security/cve/CVE-2023-21835
https://access.redhat.com/security/cve/CVE-2023-21843
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 2023 Red Hat, Inc.
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