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redhatRedHatRHSA-2024:3271
HistoryMay 22, 2024 - 10:41 a.m.

(RHSA-2024:3271) Important: bind and dhcp security update

2024-05-2210:41:26
access.redhat.com
10
bind
dhcp
dns
security protocols
cve-2023-4408
cve-2023-50387
cve-2023-50868
cpu load
dns server
dhcp protocol
network configuration

7.2 High

AI Score

Confidence

High

0.05 Low

EPSS

Percentile

92.9%

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.

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):

  • bind9: Parsing large DNS messages may cause excessive CPU load (CVE-2023-4408)

  • bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator (CVE-2023-50387)

  • bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (CVE-2023-50868)

Bug Fix:

  • dhcp rebuilt after API change of bind-export-libs

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.