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Red Hat Security Advisory 2020-2640-01

Red Hat Security Advisory 2020-2640-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2640-01 - The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Multiple denial of service related vulnerabilities were addressed.

tags | advisory, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2020-12662, CVE-2020-12663
MD5 | 8f2bfeea9b5081c2acb3925a29234d46

Red Hat Security Advisory 2020-2640-01

Change Mirror Download
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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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