A dhcp security update has been released for Red Hat Enterprise Linux 8.2.
RHSA-2021:2420-01: Important: dhcp security update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: dhcp security update
Advisory ID: RHSA-2021:2420-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2420
Issue date: 2021-06-14
CVE Names: CVE-2021-25217
=====================================================================
1. Summary:
An update for dhcp is now available for Red Hat Enterprise Linux 8.2
Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Important. 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 EUS (v. 8.2) - 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):
* dhcp: stack-based buffer overflow when parsing statements with
colon-separated hex digits in config or lease files in dhcpd and dhclient
(CVE-2021-25217)
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.
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/):
1963258 - CVE-2021-25217 dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source:
dhcp-4.3.6-40.el8_2.2.src.rpm
aarch64:
dhcp-client-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-client-debuginfo-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-debuginfo-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-debugsource-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-libs-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-libs-debuginfo-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-relay-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-relay-debuginfo-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-server-4.3.6-40.el8_2.2.aarch64.rpm
dhcp-server-debuginfo-4.3.6-40.el8_2.2.aarch64.rpm
noarch:
dhcp-common-4.3.6-40.el8_2.2.noarch.rpm
ppc64le:
dhcp-client-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-client-debuginfo-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-debuginfo-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-debugsource-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-libs-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-libs-debuginfo-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-relay-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-relay-debuginfo-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-server-4.3.6-40.el8_2.2.ppc64le.rpm
dhcp-server-debuginfo-4.3.6-40.el8_2.2.ppc64le.rpm
s390x:
dhcp-client-4.3.6-40.el8_2.2.s390x.rpm
dhcp-client-debuginfo-4.3.6-40.el8_2.2.s390x.rpm
dhcp-debuginfo-4.3.6-40.el8_2.2.s390x.rpm
dhcp-debugsource-4.3.6-40.el8_2.2.s390x.rpm
dhcp-libs-4.3.6-40.el8_2.2.s390x.rpm
dhcp-libs-debuginfo-4.3.6-40.el8_2.2.s390x.rpm
dhcp-relay-4.3.6-40.el8_2.2.s390x.rpm
dhcp-relay-debuginfo-4.3.6-40.el8_2.2.s390x.rpm
dhcp-server-4.3.6-40.el8_2.2.s390x.rpm
dhcp-server-debuginfo-4.3.6-40.el8_2.2.s390x.rpm
x86_64:
dhcp-client-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-client-debuginfo-4.3.6-40.el8_2.2.i686.rpm
dhcp-client-debuginfo-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-debuginfo-4.3.6-40.el8_2.2.i686.rpm
dhcp-debuginfo-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-debugsource-4.3.6-40.el8_2.2.i686.rpm
dhcp-debugsource-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-libs-4.3.6-40.el8_2.2.i686.rpm
dhcp-libs-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-libs-debuginfo-4.3.6-40.el8_2.2.i686.rpm
dhcp-libs-debuginfo-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-relay-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-relay-debuginfo-4.3.6-40.el8_2.2.i686.rpm
dhcp-relay-debuginfo-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-server-4.3.6-40.el8_2.2.x86_64.rpm
dhcp-server-debuginfo-4.3.6-40.el8_2.2.i686.rpm
dhcp-server-debuginfo-4.3.6-40.el8_2.2.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-2021-25217
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
