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

Synopsis:          Moderate: edk2 security, bug fix, and enhancement update
Advisory ID:       RHSA-2021:4198-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4198
Issue date:        2021-11-09
CVE Names:         CVE-2021-23840 CVE-2021-23841
====================================================================
1. Summary:

An update for edk2 is now available for Red Hat Enterprise Linux 8.

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. 8) - noarch

3. Description:

EDK (Embedded Development Kit) is a project to enable UEFI support for
Virtual Machines. This package contains a sample 64-bit UEFI firmware for
QEMU and KVM.

The following packages have been upgraded to a later upstream version: edk2
(20210527gite1999b264f1f). (BZ#1846481, BZ#1938238)

Security Fix(es):

* openssl: integer overflow in CipherUpdate (CVE-2021-23840)

* openssl: NULL pointer dereference in X509_issuer_and_serial_hash()
(CVE-2021-23841)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.5 Release Notes linked from 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/):

1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash()
1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate
1937564 - [RFE] support VCPU hot unplug in OVMF/edk2
1938238 - rebase edk2 to edk2-stable202105 for RHEL-8.5
1938257 - refresh OpenSSL bundled with edk2 for RHEL-8.5
1956837 - Additional build of edk2 without SMM (dual build / sub-package) for SEV-ES
1988762 - edk2 does not ignore PMBR protective record BootIndicator as required by UEFI spec

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
edk2-20210527gite1999b264f1f-3.el8.src.rpm

noarch:
edk2-aarch64-20210527gite1999b264f1f-3.el8.noarch.rpm
edk2-ovmf-20210527gite1999b264f1f-3.el8.noarch.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-2021-23840
https://access.redhat.com/security/cve/CVE-2021-23841
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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