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Red Hat Security Advisory

Synopsis:          Moderate: unbound security, bug fix, and enhancement update
Advisory ID:       RHSA-2022:7622-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:7622
Issue date:        2022-11-08
CVE Names:         CVE-2022-30698 CVE-2022-30699
====================================================================
1. Summary:

An update for unbound 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) - aarch64, ppc64le, s390x, x86_64

3. Description:

The unbound packages provide a validating, recursive, and caching DNS or
DNSSEC resolver.

The following packages have been upgraded to a later upstream version:
unbound (1.16.2). (BZ#2027735)

Security Fix(es):

* unbound: the novel ghost domain where malicious users to trigger
continued resolvability of malicious domain names (CVE-2022-30698)

* unbound: novel ghost domain attack where malicious users to trigger
continued resolvability of malicious domain names (CVE-2022-30699)

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 8.7 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/):

1959468 - unbound-keygen needs to be stoped
2018806 - unbound-keygen requires openssl [rhel8]
2023549 - unbound support for RFC 8767
2027735 - [RFE] Rebase unbound to latest stable release
2038251 - AVC denials recorded for fsetid while running unbound with local socket, though it (unbound-control) still works!
2081958 - chroot functionality isn't available in unbound-1.7.3 in RHEL8
2116725 - CVE-2022-30698 unbound:  the novel ghost domain where malicious users to trigger continued resolvability of malicious domain names
2116729 - CVE-2022-30699 unbound: novel ghost domain attack where malicious users to trigger continued resolvability of malicious domain names

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
unbound-1.16.2-2.el8.src.rpm

aarch64:
python3-unbound-1.16.2-2.el8.aarch64.rpm
python3-unbound-debuginfo-1.16.2-2.el8.aarch64.rpm
unbound-1.16.2-2.el8.aarch64.rpm
unbound-debuginfo-1.16.2-2.el8.aarch64.rpm
unbound-debugsource-1.16.2-2.el8.aarch64.rpm
unbound-devel-1.16.2-2.el8.aarch64.rpm
unbound-libs-1.16.2-2.el8.aarch64.rpm
unbound-libs-debuginfo-1.16.2-2.el8.aarch64.rpm

ppc64le:
python3-unbound-1.16.2-2.el8.ppc64le.rpm
python3-unbound-debuginfo-1.16.2-2.el8.ppc64le.rpm
unbound-1.16.2-2.el8.ppc64le.rpm
unbound-debuginfo-1.16.2-2.el8.ppc64le.rpm
unbound-debugsource-1.16.2-2.el8.ppc64le.rpm
unbound-devel-1.16.2-2.el8.ppc64le.rpm
unbound-libs-1.16.2-2.el8.ppc64le.rpm
unbound-libs-debuginfo-1.16.2-2.el8.ppc64le.rpm

s390x:
python3-unbound-1.16.2-2.el8.s390x.rpm
python3-unbound-debuginfo-1.16.2-2.el8.s390x.rpm
unbound-1.16.2-2.el8.s390x.rpm
unbound-debuginfo-1.16.2-2.el8.s390x.rpm
unbound-debugsource-1.16.2-2.el8.s390x.rpm
unbound-devel-1.16.2-2.el8.s390x.rpm
unbound-libs-1.16.2-2.el8.s390x.rpm
unbound-libs-debuginfo-1.16.2-2.el8.s390x.rpm

x86_64:
python3-unbound-1.16.2-2.el8.x86_64.rpm
python3-unbound-debuginfo-1.16.2-2.el8.i686.rpm
python3-unbound-debuginfo-1.16.2-2.el8.x86_64.rpm
unbound-1.16.2-2.el8.x86_64.rpm
unbound-debuginfo-1.16.2-2.el8.i686.rpm
unbound-debuginfo-1.16.2-2.el8.x86_64.rpm
unbound-debugsource-1.16.2-2.el8.i686.rpm
unbound-debugsource-1.16.2-2.el8.x86_64.rpm
unbound-devel-1.16.2-2.el8.i686.rpm
unbound-devel-1.16.2-2.el8.x86_64.rpm
unbound-libs-1.16.2-2.el8.i686.rpm
unbound-libs-1.16.2-2.el8.x86_64.rpm
unbound-libs-debuginfo-1.16.2-2.el8.i686.rpm
unbound-libs-debuginfo-1.16.2-2.el8.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-2022-30698
https://access.redhat.com/security/cve/CVE-2022-30699
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index

8. Contact:

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

Copyright 2022 Red Hat, Inc.
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