[RHSA-2020:2416-01] Important: unbound security update

Mon Jun 8 09:38:06 UTC 2020

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 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 (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

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

Security Fix(es):

* unbound: amplification of an incoming query into a large number of
queries directed to a target (CVE-2020-12662)

* unbound: infinite loop via malformed DNS answers received from upstream
servers (CVE-2020-12663)

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/):

1837597 - CVE-2020-12662 unbound: amplification of an incoming query into a large number of queries directed to a target
1837604 - CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from upstream servers

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
unbound-1.7.3-11.el8_2.src.rpm

aarch64:
python3-unbound-1.7.3-11.el8_2.aarch64.rpm
python3-unbound-debuginfo-1.7.3-11.el8_2.aarch64.rpm
unbound-1.7.3-11.el8_2.aarch64.rpm
unbound-debuginfo-1.7.3-11.el8_2.aarch64.rpm
unbound-debugsource-1.7.3-11.el8_2.aarch64.rpm
unbound-devel-1.7.3-11.el8_2.aarch64.rpm
unbound-libs-1.7.3-11.el8_2.aarch64.rpm
unbound-libs-debuginfo-1.7.3-11.el8_2.aarch64.rpm

ppc64le:
python3-unbound-1.7.3-11.el8_2.ppc64le.rpm
python3-unbound-debuginfo-1.7.3-11.el8_2.ppc64le.rpm
unbound-1.7.3-11.el8_2.ppc64le.rpm
unbound-debuginfo-1.7.3-11.el8_2.ppc64le.rpm
unbound-debugsource-1.7.3-11.el8_2.ppc64le.rpm
unbound-devel-1.7.3-11.el8_2.ppc64le.rpm
unbound-libs-1.7.3-11.el8_2.ppc64le.rpm
unbound-libs-debuginfo-1.7.3-11.el8_2.ppc64le.rpm

s390x:
python3-unbound-1.7.3-11.el8_2.s390x.rpm
python3-unbound-debuginfo-1.7.3-11.el8_2.s390x.rpm
unbound-1.7.3-11.el8_2.s390x.rpm
unbound-debuginfo-1.7.3-11.el8_2.s390x.rpm
unbound-debugsource-1.7.3-11.el8_2.s390x.rpm
unbound-devel-1.7.3-11.el8_2.s390x.rpm
unbound-libs-1.7.3-11.el8_2.s390x.rpm
unbound-libs-debuginfo-1.7.3-11.el8_2.s390x.rpm

x86_64:
python3-unbound-1.7.3-11.el8_2.x86_64.rpm
python3-unbound-debuginfo-1.7.3-11.el8_2.i686.rpm
python3-unbound-debuginfo-1.7.3-11.el8_2.x86_64.rpm
unbound-1.7.3-11.el8_2.x86_64.rpm
unbound-debuginfo-1.7.3-11.el8_2.i686.rpm
unbound-debuginfo-1.7.3-11.el8_2.x86_64.rpm
unbound-debugsource-1.7.3-11.el8_2.i686.rpm
unbound-debugsource-1.7.3-11.el8_2.x86_64.rpm
unbound-devel-1.7.3-11.el8_2.i686.rpm
unbound-devel-1.7.3-11.el8_2.x86_64.rpm
unbound-libs-1.7.3-11.el8_2.i686.rpm
unbound-libs-1.7.3-11.el8_2.x86_64.rpm
unbound-libs-debuginfo-1.7.3-11.el8_2.i686.rpm
unbound-libs-debuginfo-1.7.3-11.el8_2.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-2020-12662
https://access.redhat.com/security/cve/CVE-2020-12663
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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