CVE-2016-8858
26Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 29%
exploitation probability
29%top 2% of all CVEs
observed exploitation
nono source reports it
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."
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
n/a · n/aReferences
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=hhttp://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markuphttps://bugzilla.redhat.com/show_bug.cgi?id=1384860https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfhttps://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sighttps://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89adhttps://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.aschttps://security.gentoo.org/glsa/201612-18https://security.netapp.com/advisory/ntap-20180201-0001/http://www.openwall.com/lists/oss-security/2016/10/19/3http://www.openwall.com/lists/oss-security/2016/10/20/1http://www.securityfocus.com/bid/93776