{"id":"CVE-2013-2494","aliases":["DEBIAN-CVE-2013-2494","EUVD-2013-2440","GHSA-f5jm-37c8-vx73","UBUNTU-CVE-2013-2494"],"status":"published","title":"libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service ...","description":"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.","severity":{"version":"2.0","score":4.9,"vector":"AV:N/AC:H/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01166,"percentile":0.67525,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2013-03-28T16:00:00Z","modified":"2026-09-01T20:03:15Z","fixes":[{"ecosystem":"Debian:12","package":"isc-dhcp","fixed_in":["4.2.4-6"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"isc-dhcp","fixed_in":["4.2.4-6"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"isc-dhcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-6"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"isc-dhcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.4-6"}]}]}],"products":[{"vendor":"isc","product":"dhcp"}],"references":[{"url":"https://kb.isc.org/article/AA-00880/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-2494"},{"url":"https://kb.isc.org/article/AA-00880"},{"url":"https://github.com/advisories/GHSA-f5jm-37c8-vx73"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-2494","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2013-2494","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-2494","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-2494","description":"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.","status":"published","published":"2013-03-28T16:00:00Z","modified":"2024-09-16T19:52:30.979Z","updated_at":"2026-11-02T14:34:56.19172Z"}],"euvd":[{"id":"EUVD-2013-2440","description":"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.","status":"published","published":"2013-03-28T16:00:00Z","modified":"2024-09-16T19:52:30Z","updated_at":"2026-11-03T00:55:19.119653Z"}],"ghsa":[{"id":"GHSA-f5jm-37c8-vx73","title":"libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service ...","description":"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.","status":"published","published":"2022-05-17T05:12:32Z","modified":"2025-04-11T04:08:51Z","cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:13.537017Z"}],"nvd":[{"id":"CVE-2013-2494","description":"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.","status":"published","published":"2013-03-28T16:55:01.06Z","modified":"2026-06-16T23:53:34.753Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:N/AC:H/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:24.091325Z"}],"osv":[{"id":"CVE-2013-2494","description":"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.","status":"published","published":"2013-03-28T16:55:01Z","modified":"2026-04-10T03:43:21.032313Z","updated_at":"2026-11-02T15:43:59.09154Z"},{"id":"DEBIAN-CVE-2013-2494","description":"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.","status":"published","published":"2013-03-28T16:55:01.06Z","modified":"2026-09-01T20:03:15.811929007Z","updated_at":"2026-11-02T15:45:25.514579Z"},{"id":"UBUNTU-CVE-2013-2494","description":"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.","status":"withdrawn","published":"2013-03-28T16:55:00Z","modified":"2025-07-16T07:31:16.526355Z","updated_at":"2026-11-02T15:54:07.421078Z"}]}}