CVE-2016-8858
At a glance
- Source
- NVD
- EPSS
- EPSS 29.46 % · percentile 98 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
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."
Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/93776
- http://www.openwall.com/lists/oss-security/2016/10/20/1
- https://security.netapp.com/advisory/ntap-20180201-0001/
- http://www.openwall.com/lists/oss-security/2016/10/19/3
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h
- https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc
- http://www.securitytracker.com/id/1037057
- https://security.gentoo.org/glsa/201612-18
- https://bugzilla.redhat.com/show_bug.cgi?id=1384860
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
| CVSS 3.0 | HIGH 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2016-9683
- GCVE · GCVE-0-2016-8858
CERT-FR advisories
- CERTFR-2022-AVI-1094 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2020-AVI-618 — Multiples vulnérabilités dans les produits Stormshield · cert.ssi.gouv.fr
- CERTFR-2018-AVI-026 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:*cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:*cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:*cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:*cpe:2.3:a:openbsd:openssh:7.2:*:*:*:*:*:*:*cpe:2.3:a:openbsd:openssh:7.3:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| affected n/a |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |