{"id":"USN-5658-1","summary":"isc-dhcp vulnerabilities","details":"It was discovered that DHCP incorrectly handled option reference counting.\nA remote attacker could possibly use this issue to cause DHCP servers to\ncrash, resulting in a denial of service. (CVE-2022-2928)\n\nIt was discovered that DHCP incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause DHCP clients and\nservers to consume resources, leading to a denial of service.\n(CVE-2022-2929)\n","modified":"2026-02-10T04:42:47Z","published":"2022-10-05T16:45:48Z","related":["UBUNTU-CVE-2022-2928","UBUNTU-CVE-2022-2929"],"upstream":["CVE-2022-2928","CVE-2022-2929","UBUNTU-CVE-2022-2928","UBUNTU-CVE-2022-2929"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5658-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-2928"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-2929"}],"affected":[{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp@4.3.5-3ubuntu7.4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-3ubuntu7.4"}]}],"versions":["4.3.5-3ubuntu2","4.3.5-3ubuntu3","4.3.5-3ubuntu4","4.3.5-3ubuntu5","4.3.5-3ubuntu6","4.3.5-3ubuntu7","4.3.5-3ubuntu7.1","4.3.5-3ubuntu7.2","4.3.5-3ubuntu7.3"],"ecosystem_specific":{"binaries":[{"binary_name":"isc-dhcp-client","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-client-ddns","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-common","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-dev","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-relay","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-server","binary_version":"4.3.5-3ubuntu7.4"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.3.5-3ubuntu7.4"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2928"},{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2929"}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5658-1.json"}},{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp@4.4.1-2.1ubuntu5.20.04.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-2.1ubuntu5.20.04.4"}]}],"versions":["4.4.1-2ubuntu5","4.4.1-2ubuntu6","4.4.1-2.1ubuntu1","4.4.1-2.1ubuntu2","4.4.1-2.1ubuntu3","4.4.1-2.1ubuntu4","4.4.1-2.1ubuntu5","4.4.1-2.1ubuntu5.20.04.1","4.4.1-2.1ubuntu5.20.04.2","4.4.1-2.1ubuntu5.20.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"isc-dhcp-client","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-client-ddns","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-common","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-dev","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-relay","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-server","binary_version":"4.4.1-2.1ubuntu5.20.04.4"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.4.1-2.1ubuntu5.20.04.4"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2928"},{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2929"}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5658-1.json"}},{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp@4.4.1-2.3ubuntu2.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-2.3ubuntu2.3"}]}],"versions":["4.4.1-2.3ubuntu1","4.4.1-2.3ubuntu2","4.4.1-2.3ubuntu2.1","4.4.1-2.3ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"isc-dhcp-client","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-client-ddns","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-common","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-dev","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-relay","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-server","binary_version":"4.4.1-2.3ubuntu2.3"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.4.1-2.3ubuntu2.3"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2928"},{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-2929"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5658-1.json"}}],"schema_version":"1.7.3"}