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Red Hat Security Advisory
Synopsis: Important: unbound security update
Advisory ID: RHSA-2020:2640-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2640
Issue date: 2020-06-22
CVE Names: CVE-2020-12662 CVE-2020-12663
=====================================================================
1. Summary:
An update for unbound is now available for Red Hat Enterprise Linux 6.
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 Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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 Desktop (v. 6):
Source:
unbound-1.4.20-29.el6_10.1.src.rpm
i386:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
x86_64:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386:
unbound-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
x86_64:
unbound-1.4.20-29.el6_10.1.x86_64.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.x86_64.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
unbound-1.4.20-29.el6_10.1.src.rpm
i386:
unbound-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
ppc64:
unbound-1.4.20-29.el6_10.1.ppc64.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.ppc.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.ppc64.rpm
unbound-libs-1.4.20-29.el6_10.1.ppc.rpm
unbound-libs-1.4.20-29.el6_10.1.ppc64.rpm
s390x:
unbound-1.4.20-29.el6_10.1.s390x.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.s390.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.s390x.rpm
unbound-libs-1.4.20-29.el6_10.1.s390.rpm
unbound-libs-1.4.20-29.el6_10.1.s390x.rpm
x86_64:
unbound-1.4.20-29.el6_10.1.x86_64.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
ppc64:
unbound-debuginfo-1.4.20-29.el6_10.1.ppc.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.ppc64.rpm
unbound-devel-1.4.20-29.el6_10.1.ppc.rpm
unbound-devel-1.4.20-29.el6_10.1.ppc64.rpm
unbound-python-1.4.20-29.el6_10.1.ppc.rpm
unbound-python-1.4.20-29.el6_10.1.ppc64.rpm
s390x:
unbound-debuginfo-1.4.20-29.el6_10.1.s390.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.s390x.rpm
unbound-devel-1.4.20-29.el6_10.1.s390.rpm
unbound-devel-1.4.20-29.el6_10.1.s390x.rpm
unbound-python-1.4.20-29.el6_10.1.s390.rpm
unbound-python-1.4.20-29.el6_10.1.s390x.rpm
x86_64:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.x86_64.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
unbound-1.4.20-29.el6_10.1.src.rpm
i386:
unbound-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
x86_64:
unbound-1.4.20-29.el6_10.1.x86_64.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-libs-1.4.20-29.el6_10.1.i686.rpm
unbound-libs-1.4.20-29.el6_10.1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
i386:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
x86_64:
unbound-debuginfo-1.4.20-29.el6_10.1.i686.rpm
unbound-debuginfo-1.4.20-29.el6_10.1.x86_64.rpm
unbound-devel-1.4.20-29.el6_10.1.i686.rpm
unbound-devel-1.4.20-29.el6_10.1.x86_64.rpm
unbound-python-1.4.20-29.el6_10.1.i686.rpm
unbound-python-1.4.20-29.el6_10.1.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@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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