RHSA-2021:2357: Important: dhcp security update
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.<br>Security Fix(es):<br><li> 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)</li> 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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:2357?
The severity of RHSA-2021:2357 is classified as important.
How do I fix RHSA-2021:2357?
To fix RHSA-2021:2357, you should update the affected DHCP packages to version 4.2.5-83.el7_9.1 or higher.
Which systems are affected by RHSA-2021:2357?
RHSA-2021:2357 affects systems using the dhcp packages on Red Hat Enterprise Linux 7.
What are the affected packages in RHSA-2021:2357?
The affected packages in RHSA-2021:2357 include dhcp, dhclient, dhcp-common, dhcp-devel, and dhcp-libs.
What does RHSA-2021:2357 address?
RHSA-2021:2357 addresses vulnerabilities in the DHCP protocol implementation that may expose systems to risks.