CVE-2017-5850
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.
Does this matter?
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.
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
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 17.20% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · first 7 February 2017
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- openbsd/openbsd
- Source
- cve@mitre.org
EPSS 17.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2017/Feb/15Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2017/02/02/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95997Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037758Third Party Advisory, VDB Entry
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sigPatch, Vendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sigPatch, Vendor Advisory
- https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19dfPatch, Third Party Advisory
- https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.htmlExploit, Patch, Third Party Advisory
- https://www.exploit-db.com/exploits/41278/Exploit, Patch, Third Party Advisory, VDB Entry
- http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2017/Feb/15Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2017/02/02/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95997Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037758Third Party Advisory, VDB Entry
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sigPatch, Vendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sigPatch, Vendor Advisory
- https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19dfPatch, Third Party Advisory
- https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.htmlExploit, Patch, Third Party Advisory
- https://www.exploit-db.com/exploits/41278/Exploit, Patch, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.