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Red Hat: RHSA-2020-5011-01 Moderate: BIND Security and Bug Fix

red hat
Calendar Grey November 10, 2020
Dist Redhat Esm H88
Investigate Red Hat's recommendations regarding BIND's recent moderate security patch and bug solutions to bolster the protection of your infrastructure.
An update for bind is now available for Red Hat Enterprise Linux 7

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.

Summary

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: truncated TSIG response can lead to an assertion failure (CVE-2020-8622)
* bind: remotely triggerable assertion failure in pk11.c (CVE-2020-8623)
* bind: incorrect enforcement of update-policy rules of type "subdomain" (CVE-2020-8624)
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.
Bug Fix(es):
* BIND stops DNSKEY lookup in get_dst_key() when a key with unsupported algorithm is found first [RHEL7] (BZ#1884530)

Topics%20covered

Topics Covered

security advisory moderate update bug fix bind redhat dns

References

https://access.redhat.com/security/cve/CVE-2020-8622 https://access.redhat.com/security/cve/CVE-2020-8623 https://access.redhat.com/security/cve/CVE-2020-8624 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: bind-9.11.4-26.P2.el7_9.2.src.rpm
noarch: bind-license-9.11.4-26.P2.el7_9.2.noarch.rpm
x86_64: bind-debuginfo-9.11.4-26.P2.el7_9.2.i686.rpm bind-debuginfo-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-export-libs-9.11.4-26.P2.el7_9.2.i686.rpm bind-export-libs-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-libs-9.11.4-26.P2.el7_9.2.i686.rpm bind-libs-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-libs-lite-9.11.4-26.P2.el7_9.2.i686.rpm bind-libs-lite-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-utils-9.11.4-26.P2.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bind-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-chroot-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-debuginfo-9.11.4-26.P2.el7_9.2.i686.rpm bind-debuginfo-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-devel-9.11.4-26.P2.el7_9.2.i686.rpm bind-devel-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-export-devel-9.11.4-26.P2.el7_9.2.i686.rpm bind-export-devel-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-lite-devel-9.11.4-26.P2.el7_9.2.i686.rpm bind-lite-devel-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-pkcs11-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-pkcs11-devel-9.11.4-26.P2.el7_9.2.i686.rpm bind-pkcs11-devel-9.11.4-26.P2.el7_9.2.x86_64.rpm bind-pkcs11-libs-9.11.4-26.P2.el7_9.2.i686.rpm bind-pkcs11-libs-9.11.4-26.P2.el7_9.2.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:5011-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5011
Issue date: 2020-11-10

Topic

An update for bind is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate update bug fix bind redhat dns

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1869473 - CVE-2020-8622 bind: truncated TSIG response can lead to an assertion failure

1869477 - CVE-2020-8623 bind: remotely triggerable assertion failure in pk11.c

1869480 - CVE-2020-8624 bind: incorrect enforcement of update-policy rules of type "subdomain"

1884530 - BIND stops DNSKEY lookup in get_dst_key() when a key with unsupported algorithm is found first [RHEL7]

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