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Alerts This Week
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Moderate Update RHSA-2022:7643-01 for bind DoS and Cache Issues in RHEL 8

red hat
Calendar Grey November 8, 2022
Dist Redhat Esm H88
Critical Red Hat Bulletin for bind9.16 security patch addressing cache exploitation and Denial-of-Service vulnerabilities with moderate risk level.
An update for bind9.16 is now available for Red Hat Enterprise Linux 8

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

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: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)
* bind: DoS from specifically crafted TCP packets (CVE-2022-0396)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat update bind DoS moderate severity cache poisoning

References

https://access.redhat.com/security/cve/CVE-2021-25220 https://access.redhat.com/security/cve/CVE-2022-0396 https://access.redhat.com/security/updates/classification#important https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.7_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: bind9.16-9.16.23-0.9.el8.1.src.rpm
aarch64: bind9.16-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-chroot-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-debugsource-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-libs-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-utils-9.16.23-0.9.el8.1.aarch64.rpm bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
noarch: bind9.16-license-9.16.23-0.9.el8.1.noarch.rpm
ppc64le: bind9.16-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-chroot-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-debugsource-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-libs-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-utils-9.16.23-0.9.el8.1.ppc64le.rpm bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
s390x: bind9.16-9.16.23-0.9.el8.1.s390x.rpm bind9.16-chroot-9.16.23-0.9.el8.1.s390x.rpm bind9.16-debuginfo-9.16.23-0.9.el8.1.s390x.rpm bind9.16-debugsource-9.16.23-0.9.el8.1.s390x.rpm

Read the Full Advisory


Advisory ID: RHSA-2022:7643-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7643
Issue date: 2022-11-08

Topic

An update for bind9.16 is now available for Red Hat Enterprise Linux 8.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 Red Hat update bind DoS moderate severity cache poisoning

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2064512 - CVE-2021-25220 bind: DNS forwarders - cache poisoning vulnerability

2064513 - CVE-2022-0396 bind: DoS from specifically crafted TCP packets

2128601 - CVE-2022-38177 bind: memory leak in ECDSA DNSSEC verification code

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