{"id":"RLSA-2021:2359","summary":"Important: dhcp security 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* 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)\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.","modified":"2026-03-11T05:59:15.848359Z","published":"2021-06-09T09:19:12Z","upstream":["CVE-2021-25217"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:2359"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1963258"}],"affected":[{"package":{"name":"dhcp","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/dhcp?distro=rocky-linux-8-4-legacy&epoch=2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.3.6-44.el8_4.1"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:2359.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}