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

Synopsis:          Important: OpenJDK 11.0.19 Security Update for Portable Linux Builds
Advisory ID:       RHSA-2023:1882-01
Product:           OpenJDK
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:1882
Issue date:        2023-04-19
CVE Names:         CVE-2023-21930 CVE-2023-21937 CVE-2023-21938 
                   CVE-2023-21939 CVE-2023-21954 CVE-2023-21967 
                   CVE-2023-21968 
=====================================================================

1. Summary:

An update is now available for OpenJDK.

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:

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 (11.0.19) for portable
Linux serves as a replacement for the Red Hat build of OpenJDK 11 (11.0.18)
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: improper connection handling during TLS handshake (8294474)
(CVE-2023-21930)

* OpenJDK: Swing HTML parsing issue (8296832) (CVE-2023-21939)

* OpenJDK: incorrect enqueue of references in garbage collector (8298191)
(CVE-2023-21954)

* OpenJDK: certificate validation issue in TLS session negotiation
(8298310) (CVE-2023-21967)

* OpenJDK: missing string checks for NULL characters (8296622)
(CVE-2023-21937)

* OpenJDK: incorrect handling of NULL characters in ProcessBuilder
(8295304) (CVE-2023-21938)

* OpenJDK: missing check for slash characters in URI-to-path conversion
(8298667) (CVE-2023-21968)

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:

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

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

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

2187435 - CVE-2023-21930 OpenJDK: improper connection handling during TLS handshake (8294474)
2187441 - CVE-2023-21954 OpenJDK: incorrect enqueue of references in garbage collector (8298191)
2187704 - CVE-2023-21967 OpenJDK: certificate validation issue in TLS session negotiation (8298310)
2187724 - CVE-2023-21939 OpenJDK: Swing HTML parsing issue (8296832)
2187758 - CVE-2023-21938 OpenJDK: incorrect handling of NULL characters in ProcessBuilder (8295304)
2187790 - CVE-2023-21937 OpenJDK: missing string checks for NULL characters (8296622)
2187802 - CVE-2023-21968 OpenJDK: missing check for slash characters in URI-to-path conversion (8298667)

5. References:

https://access.redhat.com/security/cve/CVE-2023-21930
https://access.redhat.com/security/cve/CVE-2023-21937
https://access.redhat.com/security/cve/CVE-2023-21938
https://access.redhat.com/security/cve/CVE-2023-21939
https://access.redhat.com/security/cve/CVE-2023-21954
https://access.redhat.com/security/cve/CVE-2023-21967
https://access.redhat.com/security/cve/CVE-2023-21968
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 2023 Red Hat, Inc.
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