FreeBSD : FreeBSD -- TCP MD5 signature denial of service (79dfc135-600a-11e6-a6c3-14dae9d210b8)

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


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

A programming error in processing a TCP connection with both
TCP_MD5SIG and TCP_NOOPT socket options may lead to kernel crash.
Impact : A local attacker can crash the kernel, resulting in a
denial-of-service.

A remote attack is theoretically possible, if server has a listening
socket with TCP_NOOPT set, and server is either out of SYN cache
entries, or SYN cache is disabled by configuration.

See also :

http://www.nessus.org/u?f62577c3

Solution :

Update the affected packages.

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: 92918 ()

Bugtraq ID:

CVE ID: CVE-2016-1882

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