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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2016-8858 Detail

Disputed     

Current Description

The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."


View Analysis Description

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h CVE, MITRE Issue Tracking  Vendor Advisory 
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup CVE, MITRE Issue Tracking  Vendor Advisory 
http://www.openwall.com/lists/oss-security/2016/10/19/3 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2016/10/20/1 CVE, MITRE Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/93776 CVE, MITRE Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1037057 CVE, MITRE Third Party Advisory  VDB Entry 
https://bugzilla.redhat.com/show_bug.cgi?id=1384860 CVE, MITRE Issue Tracking 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf CVE, MITRE
https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig CVE, MITRE Patch  Vendor Advisory 
https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad CVE, MITRE Issue Tracking  Patch  Third Party Advisory 
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc CVE, MITRE Third Party Advisory 
https://security.gentoo.org/glsa/201612-18 CVE, MITRE Third Party Advisory 
https://security.netapp.com/advisory/ntap-20180201-0001/ CVE, MITRE Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-399 Resource Management Errors cwe source acceptance level NIST  
CWE-400 Uncontrolled Resource Consumption CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-8858
NVD Published Date:
12/09/2016
NVD Last Modified:
06/16/2026
Source:
MITRE