RedHat: RHSA-2022-8385:01 Moderate: dhcp security and enhancement u...
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                   Red Hat Security Advisory

Synopsis:          Moderate: dhcp security and enhancement update
Advisory ID:       RHSA-2022:8385-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:8385
Issue date:        2022-11-15
CVE Names:         CVE-2021-25220 
=====================================================================

1. Summary:

An update for dhcp is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 BaseOS (v. 9) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
individual devices on an IP network to get their own network configuration
information, including an IP address, a subnet mask, and a broadcast
address. The dhcp packages provide a relay agent and ISC DHCP service
required to enable and administer DHCP on a network.

Security Fix(es):

* bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)

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 9.1 Release Notes linked from 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

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

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

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 9):

Source:
dhcp-4.4.2-17.b1.el9.src.rpm

aarch64:
dhcp-client-4.4.2-17.b1.el9.aarch64.rpm
dhcp-client-debuginfo-4.4.2-17.b1.el9.aarch64.rpm
dhcp-debuginfo-4.4.2-17.b1.el9.aarch64.rpm
dhcp-debugsource-4.4.2-17.b1.el9.aarch64.rpm
dhcp-relay-4.4.2-17.b1.el9.aarch64.rpm
dhcp-relay-debuginfo-4.4.2-17.b1.el9.aarch64.rpm
dhcp-server-4.4.2-17.b1.el9.aarch64.rpm
dhcp-server-debuginfo-4.4.2-17.b1.el9.aarch64.rpm

noarch:
dhcp-common-4.4.2-17.b1.el9.noarch.rpm

ppc64le:
dhcp-client-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-client-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-debugsource-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-relay-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-relay-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-server-4.4.2-17.b1.el9.ppc64le.rpm
dhcp-server-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm

s390x:
dhcp-client-4.4.2-17.b1.el9.s390x.rpm
dhcp-client-debuginfo-4.4.2-17.b1.el9.s390x.rpm
dhcp-debuginfo-4.4.2-17.b1.el9.s390x.rpm
dhcp-debugsource-4.4.2-17.b1.el9.s390x.rpm
dhcp-relay-4.4.2-17.b1.el9.s390x.rpm
dhcp-relay-debuginfo-4.4.2-17.b1.el9.s390x.rpm
dhcp-server-4.4.2-17.b1.el9.s390x.rpm
dhcp-server-debuginfo-4.4.2-17.b1.el9.s390x.rpm

x86_64:
dhcp-client-4.4.2-17.b1.el9.x86_64.rpm
dhcp-client-debuginfo-4.4.2-17.b1.el9.x86_64.rpm
dhcp-debuginfo-4.4.2-17.b1.el9.x86_64.rpm
dhcp-debugsource-4.4.2-17.b1.el9.x86_64.rpm
dhcp-relay-4.4.2-17.b1.el9.x86_64.rpm
dhcp-relay-debuginfo-4.4.2-17.b1.el9.x86_64.rpm
dhcp-server-4.4.2-17.b1.el9.x86_64.rpm
dhcp-server-debuginfo-4.4.2-17.b1.el9.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-2021-25220
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.1_release_notes/index

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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RedHat: RHSA-2022-8385:01 Moderate: dhcp security and enhancement update

An update for dhcp is now available for Red Hat Enterprise Linux 9

Summary

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.
Security Fix(es):
* bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)
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 9.1 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changesdescribed in this advisory, refer to:https://access.redhat.com/articles/11258

References

https://access.redhat.com/security/cve/CVE-2021-25220 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.1_release_notes/index

Package List

Red Hat Enterprise Linux BaseOS (v. 9):
Source: dhcp-4.4.2-17.b1.el9.src.rpm
aarch64: dhcp-client-4.4.2-17.b1.el9.aarch64.rpm dhcp-client-debuginfo-4.4.2-17.b1.el9.aarch64.rpm dhcp-debuginfo-4.4.2-17.b1.el9.aarch64.rpm dhcp-debugsource-4.4.2-17.b1.el9.aarch64.rpm dhcp-relay-4.4.2-17.b1.el9.aarch64.rpm dhcp-relay-debuginfo-4.4.2-17.b1.el9.aarch64.rpm dhcp-server-4.4.2-17.b1.el9.aarch64.rpm dhcp-server-debuginfo-4.4.2-17.b1.el9.aarch64.rpm
noarch: dhcp-common-4.4.2-17.b1.el9.noarch.rpm
ppc64le: dhcp-client-4.4.2-17.b1.el9.ppc64le.rpm dhcp-client-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm dhcp-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm dhcp-debugsource-4.4.2-17.b1.el9.ppc64le.rpm dhcp-relay-4.4.2-17.b1.el9.ppc64le.rpm dhcp-relay-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm dhcp-server-4.4.2-17.b1.el9.ppc64le.rpm dhcp-server-debuginfo-4.4.2-17.b1.el9.ppc64le.rpm
s390x: dhcp-client-4.4.2-17.b1.el9.s390x.rpm dhcp-client-debuginfo-4.4.2-17.b1.el9.s390x.rpm dhcp-debuginfo-4.4.2-17.b1.el9.s390x.rpm dhcp-debugsource-4.4.2-17.b1.el9.s390x.rpm dhcp-relay-4.4.2-17.b1.el9.s390x.rpm dhcp-relay-debuginfo-4.4.2-17.b1.el9.s390x.rpm dhcp-server-4.4.2-17.b1.el9.s390x.rpm dhcp-server-debuginfo-4.4.2-17.b1.el9.s390x.rpm
x86_64: dhcp-client-4.4.2-17.b1.el9.x86_64.rpm dhcp-client-debuginfo-4.4.2-17.b1.el9.x86_64.rpm dhcp-debuginfo-4.4.2-17.b1.el9.x86_64.rpm dhcp-debugsource-4.4.2-17.b1.el9.x86_64.rpm dhcp-relay-4.4.2-17.b1.el9.x86_64.rpm dhcp-relay-debuginfo-4.4.2-17.b1.el9.x86_64.rpm dhcp-server-4.4.2-17.b1.el9.x86_64.rpm dhcp-server-debuginfo-4.4.2-17.b1.el9.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/

Severity
Advisory ID: RHSA-2022:8385-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8385
Issued Date: : 2022-11-15
CVE Names: CVE-2021-25220

Topic

An update for dhcp is now available for Red Hat Enterprise Linux 9.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.

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 9) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

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

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