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Red Hat 6: RHSA-2021-1468 Critical Update Regarding Bind DNS Security

red hat
Calendar Grey April 29, 2021
Dist Redhat Esm H88
CentOS Linux 7 receives a significant samba patch addressing a vulnerability in file sharing protocols that could impact server stability.
An update for bind is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support

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: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215)
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.

Topics%20covered

Topics Covered

security advisory security update bind important dns security red hat enterprise dns issue bind update dns

References

https://access.redhat.com/security/cve/CVE-2021-25215 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 6 ELS):
Source: bind-9.8.2-0.68.rc1.el6_10.11.src.rpm
i386: bind-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.i686.rpm
s390x: bind-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.s390x.rpm
x86_64: bind-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6 ELS):
i386: bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-sdb-9.8.2-0.68.rc1.el6_10.11.i686.rpm
s390x: bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1468-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1468
Issue date: 2021-04-29

Topic

An update for bind is now available for Red Hat Enterprise Linux 6 ExtendedLifecycle Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update bind important dns security red hat enterprise dns issue bind update dns

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 6 ELS) - i386, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64

Bugs Fixed

1953857 - CVE-2021-25215 bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

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