{"id":"RLSA-2022:8385","summary":"Moderate: dhcp security and enhancement update","details":"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.\n\nSecurity Fix(es):\n\n* bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)\n\nFor 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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 9.1 Release Notes linked from the References section.","modified":"2026-03-11T06:04:26.527786Z","published":"2022-11-15T06:23:05Z","upstream":["CVE-2021-25220"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2022:8385"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2064512"}],"affected":[{"package":{"name":"dhcp","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/dhcp?distro=rocky-linux-9&epoch=2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.4.2-17.b1.el9"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2022:8385.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}