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    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.

    Published:Mar 27, 2017
    Last Modified:Apr 20, 2025
    EPS:Mar 27, 2017
    EPSS Score:0.4959
    CVSS Score:7.5

    Affected Products

    Vendor
    Openbsd
    Product
    Openbsd

    Exploits

    http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.htmlhttps://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.htmlhttps://www.exploit-db.com/exploits/41278/http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.htmlhttps://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.htmlhttps://www.exploit-db.com/exploits/41278/https://www.exploit-db.com/exploits/41278

    Related CVEs

    CVE-2026-56101 (CVSS 6) — OpenBSD before commit 1ee99df contains an inverted comparison vulnerability in the ieee80211_michael_mic_failu…
    CVE-2026-57589 (CVSS 7.4) — sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. T…
    CVE-2026-55706 (CVSS 5.8) — sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zer…
    CVE-2026-41285 (CVSS 4.3) — In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Ne…
    CVE-2025-67901 (CVSS 5.3) — openrsync through 0.5.0, as used in OpenBSD through 7.8 and on other platforms, allows a client to cause a ser…
    CVE-2025-30334 (CVSS 7.1) — In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in ke…
    CVE-2024-11149 (CVSS 6.2) — In OpenBSD 7.4 before errata 014, vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs.…
    CVE-2024-10933 (CVSS 4.1) — In OpenBSD 7.5 before errata 009 and OpenBSD 7.4 before errata 022, exclude any '/' in readdir name validation…
    CVE-2024-11148 (CVSS 8.7) — In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd(8) is vulnerable to a NULL dereferen…
    CVE-2024-10934 (CVSS 9.2) — In OpenBSD 7.5 before errata 008 and OpenBSD 7.4 before errata 021, avoid possible mbuf double free in NFS cl…

    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
    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/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High