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Vulnerability record · CVE-2017-5850 · published 27 March 2017

CVE-2017-5850: Openbsd allocation without limits vulnerability

Openbsd · Openbsd

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.

7.5 CVSS 3.0 High EPSS 17% · top 3.0% CWE-770 · Allocation without limits
7.5CVSS 3.0 base score, v2 7.8
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References, 6 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2 Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2017/Feb/15 Third Party AdvisoryVDB Entry
http://www.openwall.com/lists/oss-security/2017/02/02/6 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/95997 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037758 Third Party AdvisoryVDB Entry
https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig PatchVendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig PatchVendor Advisory
https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df PatchThird Party Advisory
https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html ExploitPatchThird Party Advisory
https://www.exploit-db.com/exploits/41278/ ExploitPatchThird Party AdvisoryVDB Entry
http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2 Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2017/Feb/15 Third Party AdvisoryVDB Entry
http://www.openwall.com/lists/oss-security/2017/02/02/6 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/95997 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037758 Third Party AdvisoryVDB Entry
https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig PatchVendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig PatchVendor Advisory
https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df PatchThird Party Advisory
https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html ExploitPatchThird Party Advisory
https://www.exploit-db.com/exploits/41278/ ExploitPatchThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-5850), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.