CVE-2016-8858
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Wysłanie wielu duplikatów żądań KEXINIT w OpenSSH prowadzi do odmowy usługi.
CVSS
7.5
EPSS
31.2%
Exploit
none
Vendor
openbsd
Opis źródłowy (NVD)
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."
dos
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 7.5 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 31.2% |
| Opublikowano (NVD) | 2016-12-09 11:59:00 UTC |
| Ostatnia modyfikacja (NVD) | 2026-05-29 21:16:30 UTC |
Referencje
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=h (cve@mitre.org) [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.org) [Issue Tracking, Vendor Advisory]
- http://www.openwall.com/lists/oss-security/2016/10/19/3 (cve@mitre.org) [Mailing List, Third Party Advisory]
- http://www.openwall.com/lists/oss-security/2016/10/20/1 (cve@mitre.org) [Mailing List, Third Party Advisory]
- http://www.securityfocus.com/bid/93776 (cve@mitre.org) [Third Party Advisory, VDB Entry]
- http://www.securitytracker.com/id/1037057 (cve@mitre.org) [Third Party Advisory, VDB Entry]
- https://bugzilla.redhat.com/show_bug.cgi?id=1384860 (cve@mitre.org) [Issue Tracking]
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (cve@mitre.org)
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig (cve@mitre.org) [Patch, Vendor Advisory]
- https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad (cve@mitre.org) [Issue Tracking, Patch, Third Party Advisory]
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc (cve@mitre.org) [Third Party Advisory]
- https://security.gentoo.org/glsa/201612-18 (cve@mitre.org) [Third Party Advisory]
- https://security.netapp.com/advisory/ntap-20180201-0001/ (cve@mitre.org) [Third Party Advisory]