{"id":"UBUNTU-CVE-2013-2494","details":"libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service (memory consumption) via vectors involving a regular expression, as demonstrated by a memory-exhaustion attack against a machine running a dhcpd process, a related issue to CVE-2013-2266.","modified":"2025-07-16T07:31:16.526355Z","published":"2013-03-28T16:55:00Z","withdrawn":"2025-07-18T16:42:52Z","upstream":["CVE-2013-2494"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-2494"},{"type":"REPORT","url":"https://kb.isc.org/article/AA-00880/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-2494"}],"affected":[{"package":{"name":"isc-dhcp","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/isc-dhcp@4.2.4-7ubuntu12.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-7ubuntu12.3"}]}],"versions":["4.2.4-7ubuntu8","4.2.4-7ubuntu9","4.2.4-7ubuntu10","4.2.4-7ubuntu11","4.2.4-7ubuntu12","4.2.4-7ubuntu12.1","4.2.4-7ubuntu12.2"],"ecosystem_specific":{"binaries":[{"binary_name":"isc-dhcp-client","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-client-dbg","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-client-dbgsym","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-client-udeb","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-client-udeb-dbgsym","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-common","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-common-dbgsym","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-dev","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-relay","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-relay-dbg","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-relay-dbgsym","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-server","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-server-dbg","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-server-dbgsym","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-server-ldap","binary_version":"4.2.4-7ubuntu12.3"},{"binary_name":"isc-dhcp-server-ldap-dbgsym","binary_version":"4.2.4-7ubuntu12.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-2494.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"low"}]}