FreeBSD : FreeBSD -- OpenSSH multiple vulnerabilities (2c948527-d823-11e6-9171-14dae9d210b8)

High Nessus Plugin ID 96411

Synopsis

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

Description

The ssh-agent(1) agent supports loading a PKCS#11 module from outside a trusted whitelist. An attacker can request loading of a PKCS#11 module across forwarded agent-socket. [CVE-2016-10009]

When privilege separation is disabled, forwarded Unix domain sockets would be created by sshd(8) with the privileges of 'root' instead of the authenticated user. [CVE-2016-10010] Impact : A remote attacker who have control of a forwarded agent-socket on a remote system and have the ability to write files on the system running ssh-agent(1) agent can run arbitrary code under the same user credential. Because the attacker must already have some control on both systems, it is relatively hard to exploit this vulnerability in a practical attack.
[CVE-2016-10009]

When privilege separation is disabled (on FreeBSD, privilege separation is enabled by default and has to be explicitly disabled), an authenticated attacker can potentially gain root privileges on systems running OpenSSH server. [CVE-2016-10010]

Solution

Update the affected package.

See Also

http://www.nessus.org/u?9571b6d3

Plugin Details

Severity: High

ID: 96411

File Name: freebsd_pkg_2c948527d82311e6917114dae9d210b8.nasl

Version: 3.4

Type: local

Published: 2017/01/12

Updated: 2019/04/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 7.3

Temporal Score: 6.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssh-portable, cpe:/o:freebsd:freebsd

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/01/11

Vulnerability Publication Date: 2017/01/11

Reference Information

CVE: CVE-2016-10009, CVE-2016-10010

FreeBSD: SA-17:01.openssh