CVE-2016-8858 Detail

Current Description

** DISPUTED ** 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

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h 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 Issue Tracking  Vendor Advisory 
http://www.openwall.com/lists/oss-security/2016/10/19/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2016/10/20/1 Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/93776 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1037057 Third Party Advisory  VDB Entry 
https://bugzilla.redhat.com/show_bug.cgi?id=1384860 Issue Tracking 
https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig Patch  Vendor Advisory 
https://github.com/dag-erling/kexkill/issues/1 Third Party Advisory 
https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad Issue Tracking  Patch  Third Party Advisory 
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc Third Party Advisory 
https://security.gentoo.org/glsa/201612-18 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20180201-0001/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-399 Resource Management Errors cwe source acceptance level NIST  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-8858
NVD Published Date:
12/09/2016
NVD Last Modified:
09/19/2018
Source:
MITRE