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Red Hat Enterprise: RHSA-2023-0402-01 Moderate: Cache Poisoning Risk

red hat
Calendar Grey January 24, 2023
Dist Redhat Esm H88
Canonical issues a timely security notice for DHCP, resolving address allocation vulnerabilities and enhancing operational efficiency on Ubuntu 20.04.
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: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)
* bind: processing large delegations may severely degrade resolver performance (CVE-2022-2795)
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 moderate severity Red Hat Enterprise cache poisoning DNS protocols performance issues bind caching

References

https://access.redhat.com/security/cve/CVE-2021-25220 https://access.redhat.com/security/cve/CVE-2022-2795 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_9.13.src.rpm
noarch: bind-license-9.11.4-26.P2.el7_9.13.noarch.rpm
x86_64: bind-debuginfo-9.11.4-26.P2.el7_9.13.i686.rpm bind-debuginfo-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-export-libs-9.11.4-26.P2.el7_9.13.i686.rpm bind-export-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-libs-9.11.4-26.P2.el7_9.13.i686.rpm bind-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-libs-lite-9.11.4-26.P2.el7_9.13.i686.rpm bind-libs-lite-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-utils-9.11.4-26.P2.el7_9.13.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bind-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-chroot-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-debuginfo-9.11.4-26.P2.el7_9.13.i686.rpm bind-debuginfo-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-devel-9.11.4-26.P2.el7_9.13.i686.rpm bind-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-export-devel-9.11.4-26.P2.el7_9.13.i686.rpm bind-export-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-lite-devel-9.11.4-26.P2.el7_9.13.i686.rpm bind-lite-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-pkcs11-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.i686.rpm bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2023:0402-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0402
Issue date: 2023-01-24

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 severity Red Hat Enterprise cache poisoning DNS protocols performance issues bind caching

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

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

2128584 - CVE-2022-2795 bind: processing large delegations may severely degrade resolver performance

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