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Red Hat Enterprise Linux 8 RHSA-2023:3000-01 Moderate: DHCP Security Fix

red hat
Calendar Grey May 16, 2023
Dist Redhat Esm H88
A significant dhcp security patch for Fedora Linux 38 tackles memory vulnerabilities and overflow concerns. Learn more for specifics.
An update for dhcp 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 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: option refcount overflow when leasequery is enabled leading to dhcpd abort (CVE-2022-2928)
* dhcp: DHCP memory leak (CVE-2022-2929)
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 8.8 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux network protocol memory issue dhcp update option overflow

References

https://access.redhat.com/security/cve/CVE-2022-2928 https://access.redhat.com/security/cve/CVE-2022-2929 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.8_release_notes/index

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: dhcp-4.3.6-49.el8.src.rpm
aarch64: dhcp-client-4.3.6-49.el8.aarch64.rpm dhcp-client-debuginfo-4.3.6-49.el8.aarch64.rpm dhcp-debuginfo-4.3.6-49.el8.aarch64.rpm dhcp-debugsource-4.3.6-49.el8.aarch64.rpm dhcp-libs-4.3.6-49.el8.aarch64.rpm dhcp-libs-debuginfo-4.3.6-49.el8.aarch64.rpm dhcp-relay-4.3.6-49.el8.aarch64.rpm dhcp-relay-debuginfo-4.3.6-49.el8.aarch64.rpm dhcp-server-4.3.6-49.el8.aarch64.rpm dhcp-server-debuginfo-4.3.6-49.el8.aarch64.rpm
noarch: dhcp-common-4.3.6-49.el8.noarch.rpm
ppc64le: dhcp-client-4.3.6-49.el8.ppc64le.rpm dhcp-client-debuginfo-4.3.6-49.el8.ppc64le.rpm dhcp-debuginfo-4.3.6-49.el8.ppc64le.rpm dhcp-debugsource-4.3.6-49.el8.ppc64le.rpm dhcp-libs-4.3.6-49.el8.ppc64le.rpm dhcp-libs-debuginfo-4.3.6-49.el8.ppc64le.rpm dhcp-relay-4.3.6-49.el8.ppc64le.rpm dhcp-relay-debuginfo-4.3.6-49.el8.ppc64le.rpm dhcp-server-4.3.6-49.el8.ppc64le.rpm dhcp-server-debuginfo-4.3.6-49.el8.ppc64le.rpm
s390x: dhcp-client-4.3.6-49.el8.s390x.rpm dhcp-client-debuginfo-4.3.6-49.el8.s390x.rpm dhcp-debuginfo-4.3.6-49.el8.s390x.rpm dhcp-debugsource-4.3.6-49.el8.s390x.rpm dhcp-libs-4.3.6-49.el8.s390x.rpm dhcp-libs-debuginfo-4.3.6-49.el8.s390x.rpm dhcp-relay-4.3.6-49.el8.s390x.rpm dhcp-relay-debuginfo-4.3.6-49.el8.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3000-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3000
Issue date: 2023-05-16

Topic

An update for dhcp 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 Enterprise Linux network protocol memory issue dhcp update option overflow

Relevant Releases Architectures

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

Bugs Fixed

2132001 - CVE-2022-2929 dhcp: DHCP memory leak

2132002 - CVE-2022-2928 dhcp: option refcount overflow when leasequery is enabled leading to dhcpd abort

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