SSH: OpenSSH kex_input_kexinit Denial of Service
This signature detects attempts to exploit a known vulnerability in OpenSSH. Successful exploitation of this vulnerability could lead to excessive memory consumption causing denial of service.
Extended 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."
Affected Products
Openbsd openssh
Short Name
SSH:OPENSSH:KEX-MODULE-DOS
Severity
Minor
Recommended
False
Recommended Action
None
Category
SSH
Keywords
CVE-2016-8858 CVE-2018-15473 Denial OpenSSH Service bid:93776 kex_input_kexinit of
Release Date
02/02/2017
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3806
False Positive
Unknown
Vendors
Openbsd
CVSS Score
7.8