CVE-2017-5850

moderate-risk
Published 2017-03-27

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.

Do I need to act?

!
49.6% chance of exploitation in next 30 days
EPSS score — higher than 50% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
41278
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Openbsd

References (22)

Mailing List http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2
Exploit http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Se...
Third Party Advisory http://seclists.org/fulldisclosure/2017/Feb/15
Mailing List http://www.openwall.com/lists/oss-security/2017/02/02/6
Third Party Advisory http://www.securityfocus.com/bid/95997
Third Party Advisory http://www.securitytracker.com/id/1037758
Patch https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig
Patch https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig
Patch https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df
Exploit https://pierrekim.github.io/blog/2017-02-07-openbsd-httpd-CVE-2017-5850.html
Exploit https://www.exploit-db.com/exploits/41278/
Mailing List http://marc.info/?l=openbsd-cvs&m=148587359420912&w=2
Exploit http://packetstormsecurity.com/files/140944/OpenBSD-HTTP-Server-6.0-Denial-Of-Se...
Third Party Advisory http://seclists.org/fulldisclosure/2017/Feb/15
Mailing List http://www.openwall.com/lists/oss-security/2017/02/02/6
Third Party Advisory http://www.securityfocus.com/bid/95997
Third Party Advisory http://www.securitytracker.com/id/1037758
Patch https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/034_httpd.patch.sig
Patch https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig
Patch https://github.com/openbsd/src/commit/142cfc82b932bc211218fbd7bdda8c7ce83f19df
and 2 more references
49
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 18/34 · Moderate
Exposure 5/34 · Minimal