{"id":"CVE-2017-5850","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-5850","generatedAt":"2026-10-28T20:48:25.837Z","title":"httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using an HTTP Range header.","description":"httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using an HTTP Range header.","published":"2017-03-27T15:59:00.000Z","lastModified":"2026-06-17T01:21:19.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770"],"affected":["openbsd/openbsd"],"epss":{"score":0.17203,"percentile":0.97081,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2017-02-07","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":41278,"kind":"exploit","title":"OpenBSD HTTPd < 6.0 - Memory Exhaustion Denial of Service","url":"https://www.exploit-db.com/exploits/41278","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/openbsd/dos/41278.txt","file":"exploits/openbsd/dos/41278.txt","published":"2017-02-07","added":"2017-02-07","updated":"2017-02-07","author":"PierreKimSec","type":"dos","platform":"openbsd","port":80,"verified":false,"codes":["CVE-2017-5850"],"tags":null,"aliases":"killobsdhttpd.pl","applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://pierrekim.github.io/advisories/CVE-2017-5850-openbsd.txt"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 17.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2017/Feb/15","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2017/02/02/6","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/95997","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1037758","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html","tags":["Exploit","Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/41278/","tags":["Exploit","Patch","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2017/Feb/15","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2017/02/02/6","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/95997","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037758","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html","tags":["Exploit","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/41278/","tags":["Exploit","Patch","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-5850","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}