FreeBSD : FreeBSD -- OpenSSH Remote Denial of Service vulnerability (6a2cfcdc-9dea-11e6-a298-14dae9d210b8)

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

When processing the SSH_MSG_KEXINIT message, the server could allocate
up to a few hundreds of megabytes of memory per each connection,
before any authentication take place. Impact : A remote attacker may
be able to cause a SSH server to allocate an excessive amount of
memory. Note that the default MaxStartups setting on FreeBSD will
limit the effectiveness of this attack.

See also :

http://seclists.org/oss-sec/2016/q4/191
http://www.nessus.org/u?be722f65

Solution :

Update the affected package.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 94418 ()

Bugtraq ID:

CVE ID: CVE-2016-8858

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