{"id":"CVE-2018-0608","aliases":["DEBIAN-CVE-2018-0608","EUVD-2018-1418","GHSA-crhj-h9hx-58vj","UBUNTU-CVE-2018-0608"],"status":"published","title":"Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary...","description":"Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03726,"percentile":0.8988,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2018-06-26T14:00:00Z","modified":"2026-10-23T18:02:55Z","fixes":[{"ecosystem":"Debian:12","package":"h2o","fixed_in":["2.2.5+dfsg1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.5+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.3+dfsg-2","2.2.4+dfsg-1","2.2.4+dfsg-1build1","2.2.4+dfsg-1ubuntu0.1~esm2"]}],"products":[{"vendor":"dena","product":"h2o"},{"vendor":"h2o","product":"h2o"},{"vendor":"kazuho oku","product":"h2o"}],"references":[{"url":"http://jvn.jp/en/jp/JVN93226941/index.html","tags":["third-party-advisory","x_refsource_JVN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/h2o/h2o/issues/1775","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-0608"},{"url":"https://github.com/advisories/GHSA-crhj-h9hx-58vj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-0608","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-0608","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-0608","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-0608","description":"Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified 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to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.","status":"published","published":"2018-06-26T14:29:01.927Z","modified":"2026-10-20T10:49:36.607309978Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:07.192756Z"},{"id":"DEBIAN-CVE-2018-0608","description":"Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.","status":"published","published":"2018-06-26T14:29:01.927Z","modified":"2026-10-23T18:02:55.436866134Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:29.988046Z"},{"id":"UBUNTU-CVE-2018-0608","description":"Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.","status":"published","published":"2018-06-26T14:29:00Z","modified":"2026-04-22T11:38:15.353637Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:16.154988Z"}]}}