PT-2017-2267 · Openbsd · Openbsd Httpd

Pierre Kim + 1 · Published 2017-03-27 · Updated 2019-10-03 · CVE-2017-5850

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions OpenBSD httpd (affected versions not specified)

Description The issue is related to resource management errors in the httpd component of the OpenBSD operating system. It can be exploited by a remote attacker to cause a denial of service, specifically memory consumption, by sending specially crafted requests using the HTTP Range header. This can be achieved by requesting a large file in a series of requests.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

CWE-399

Related Identifiers

BDU:2017-01464

CVE-2017-5850

Affected Products

Openbsd Httpd

References · 15

• 🔥 http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Service.html · Exploit
• 🔥 https://exploit-db.com/exploits/41278 · Exploit
• 🔥 https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html · Exploit
• https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df · Patch
• https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-5850 · Security Note
• https://bdu.fstec.ru/vul/2017-01464 · Security Note
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-5850 · Vendor Advisory
• http://openwall.com/lists/oss-security/2017/02/02/6 · Note
• http://seclists.org/fulldisclosure/2017/Feb/15 · Note
• http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2 · Note
• http://securityfocus.com/bid/95997 · Note
• http://securitytracker.com/id/1037758 · Note
• http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2 · Note