CVE-2017-5850

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 17.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-03-27 · updated 2026-06-17
Weakness: CWE-770

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.

Affected products

OpenBSD: 6.0

References

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

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