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Red Hat Security Advisory 2020-3379-01

Red Hat Security Advisory 2020-3379-01
Posted Aug 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3379-01 - The Berkeley Internet Name Domain is an implementation of the Domain Name System protocols. BIND includes a DNS server ; a resolver library ; and tools for verifying that the DNS server is operating correctly.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2020-8616, CVE-2020-8617
SHA-256 | 62f55f5dc4b23f7d6240f8e34a967935fbfd154bf33844b52aeb5c14727bdc6d

Red Hat Security Advisory 2020-3379-01

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

Synopsis: Important: bind security update
Advisory ID: RHSA-2020:3379-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3379
Issue date: 2020-08-10
CVE Names: CVE-2020-8616 CVE-2020-8617
====================================================================
1. Summary:

An update for bind is now available for Red Hat Enterprise Linux 6.5
Advanced Update Support.

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 Server AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64

3. Description:

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain
Name System (DNS) protocols. BIND includes a DNS server (named); a resolver
library (routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating correctly.

Security Fix(es):

* bind: BIND does not sufficiently limit the number of fetches performed
when processing referrals (CVE-2020-8616)

* bind: A logic error in code which checks TSIG validity can be used to
trigger an assertion failure in tsig.c (CVE-2020-8617)

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

After installing the update, the BIND daemon (named) will be restarted
automatically.

5. Bugs fixed (https://bugzilla.redhat.com/):

1836118 - CVE-2020-8616 bind: BIND does not sufficiently limit the number of fetches performed when processing referrals
1836124 - CVE-2020-8617 bind: A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 6.5):

Source:
bind-9.8.2-0.23.rc1.el6_5.9.src.rpm

x86_64:
bind-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-chroot-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.9.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.9.i686.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-utils-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 6.5):

Source:
bind-9.8.2-0.23.rc1.el6_5.9.src.rpm

x86_64:
bind-debuginfo-9.8.2-0.23.rc1.el6_5.9.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.9.i686.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.9.x86_64.rpm
bind-sdb-9.8.2-0.23.rc1.el6_5.9.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-2020-8616
https://access.redhat.com/security/cve/CVE-2020-8617
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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