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AUSCERT External Security Bulletin Redistribution
ESB-2017.0214.4
Multiple OpenSSH vulnerabilities have been identified in F5 products
23 October 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-10010 CVE-2016-10009
Reference: ESB-2017.0085
Original Bulletin:
https://support.f5.com/csp/article/K31440025
https://support.f5.com/csp/article/K64292204
Revision History: October 23 2020: Vendor issued periodic minor update (CVE-2016-10009)
February 21 2020: Vendor updated advisory K64292204 with vulnerability and fix details
December 17 2018: K31440025 updated with patches
January 25 2017: Initial Release
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K31440025:OpenSSH vulnerability CVE-2016-10009
Security Advisory
Original Publication Date: 24 Jan, 2017
Latest Publication Date: 22 Oct, 2020
Security Advisory Description
Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH
before 7.4 allows remote attackers to execute arbitrary local PKCS#11 modules
by leveraging control over a forwarded agent-socket. (CVE-2016-10009)
Impact
Running the ssh-agent program requires a local administrator to connect to the
system and run the command. Once thessh-agent has been started, an attacker
could run code on the system that is running the ssh-agentif the attacker has
control of the forwarded agent socket on the host running the sshd server and
can write to the filesystem of the host that is running thessh-agent.
Security Advisory Status
F5 Product Development has assigned ID 636453 (BIG-IP, iWorkflow, BIG-IQ, and
Enterprise Manager), and INSTALLER-2868 (Traffix SDC) to this vulnerability.
Additionally, F5 iHealth may list Heuristic H31440025 on the Diagnostics >
Identified > Medium page.
To determine if your release is known to be vulnerable, the components or
features that are affected by the vulnerability, and for information about
releases or hotfixes that address the vulnerability, refer to the following
table.
+---------------+----------------+-----------------+----------+----------------+
| |Versions known |Versions known to| |Vulnerable |
|Product |to be vulnerable|be not vulnerable|Severity |component or |
| | | | |feature |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^| | | |
|BIG-IP LTM |1 |14.1.0 |Medium |OpenSSH, |
| |11.6.0 - 11.6.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^|14.1.0 | |OpenSSH, |
|BIG-IP AAM |1 |13.1.3.2 |Medium |ssh-agent |
| |11.6.0 - 11.6.5^| | | |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^|14.1.0 | |OpenSSH, |
|BIG-IP AFM |1 |13.1.3.2 |Medium |ssh-agent |
| |11.6.0 - 11.6.5^| | | |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^| | | |
|BIG-IP |1 |14.1.0 |Medium |OpenSSH, |
|Analytics |11.6.0 - 11.6.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^| | | |
|BIG-IP APM |1 |14.1.0 |Medium |OpenSSH, |
| |11.6.0 - 11.6.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^| | | |
|BIG-IP ASM |1 |14.1.0 |Medium |OpenSSH, |
| |11.6.0 - 11.6.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
|BIG-IP DNS |13.0.0 - 13.1.3 |14.1.0 |Medium |OpenSSH, |
| |12.0.0 - 12.1.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge |11.2.1 |None |Medium |OpenSSH, |
|Gateway | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
| |11.6.0 - 11.6.5^| | | |
|BIG-IP GTM |1 |None |Medium |OpenSSH, |
| |11.4.0 - 11.5.10| | |ssh-agent |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^| | | |
|BIG-IP Link |1 |14.1.0 |Medium |OpenSSH, |
|Controller |11.6.0 - 11.6.5^|13.1.3.2 | |ssh-agent |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^|14.1.0 | |OpenSSH, |
|BIG-IP PEM |1 |13.1.3.2 |Medium |ssh-agent |
| |11.6.0 - 11.6.5^| | | |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM |11.4.0 - 11.4.1 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP |11.2.1 |None |Medium |OpenSSH, |
|WebAccelerator | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
| |14.0.0 - 14.0.1 | | | |
| |13.0.0 - 13.1.3 | | | |
| |12.0.0 - 12.1.5^|14.1.0 | |OpenSSH, |
|BIG-IP WebSafe |1 |13.1.3.2 |Medium |ssh-agent |
| |11.6.0 - 11.6.5^| | | |
| |1 | | | |
| |11.4.0 - 11.5.10| | | |
+---------------+----------------+-----------------+----------+----------------+
|ARX |None |6.2.0 - 6.4.0 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise |3.1.1 |None |Medium |OpenSSH, |
|Manager | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device |4.2.0 - 4.5.0 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC |4.5.0 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ |7.0.0 - 7.1.0^1 | | | |
|Centralized |6.0.0 - 6.1.0^1 |None |Medium |OpenSSH, |
|Management |5.0.0 - 5.4.0^1 | | |ssh-agent |
| |4.6.0 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud | | | |OpenSSH, |
|and |1.0.0 |None |Medium |ssh-agent |
|Orchestration | | | | |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow |2.0.0 - 2.0.2 |None |Medium |OpenSSH, |
| | | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
|LineRate |None |2.5.0 - 2.6.1 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC |5.0.0 - 5.1.0 |None |Low |OpenSSH, |
| |4.0.0 - 4.4.0 | | |ssh-agent |
+---------------+----------------+-----------------+----------+----------------+
^1F5 will not be developing a fix for the BIG-IP 11.6.x and 12.x.x software
branches; this includes the BIG-IQ 5.x.x through 7.x.x branches, which are
based on the BIG-IP 12.x software branch. As a result, F5 will not update this
table with subsequent vulnerable releases in these branches. For more
information, refer to K4602: Overview of the F5 security vulnerability response
policy.
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.
Mitigation
F5 advises that you do not use the ssh-agent program on F5 products.
Supplemental Information
o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K4918: Overview of the F5 critical issue hotfix policy
- --------------------------------------------------------------------------------
K64292204:OpenSSH vulnerability CVE-2016-10010
Security Advisory
Original Publication Date: 24 Jan, 2017
Latest Publication Date: 19 Feb, 2020
Security Advisory Description
sshd in OpenSSH before 7.4, when privilege separation is not used, creates
forwarded Unix-domain sockets as root, which might allow local users to gain
privileges via unspecified vectors, related to serverloop.c. (CVE-2016-10010)
Impact
In the default configuration, there is no impact. However, if the administrator
disables privilege separation in the system sshd_config file, the system can be
exposed to this vulnerability.
Security Advisory Status
F5 Product Development has assigned ID 636460 (BIG-IP, iWorkflow, BIG-IQ,
Enterprise Manager), and ID INSTALLER-2868 (Traffix SDC) to this vulnerability.
Additionally, BIG-IP iHealth lists Heuristic H64292204 on the Diagnostics >
Identified > High screen.
To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if your
release is known to be vulnerable, the components or features that are affected
by the vulnerability, and for information about releases, point releases, or
hotfixes that address the vulnerability, refer to the following table. For more
information about security advisory versioning, refer to K51812227:
Understanding Security Advisory versioning.
+---------------+------+------------+----------+----------+------+------------+
| | |Versions |Fixes | |CVSSv3|Vulnerable |
|Product |Branch|known to be |introduced|Severity |score^|component or|
| | |vulnerable |in | |1 |feature |
+---------------+------+------------+----------+----------+------+------------+
| |15.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IP (LTM, +------+------------+----------+ | | |
|AAM, AFM, |14.x |14.0.0 - |14.1.0 - | | | |
|Analytics, APM,| |14.0.1 |14.1.2 | | | |
|ASM, DNS, GTM, +------+------------+----------+ | | |
|Link |13.x |13.1.0 - |None |High |7.5 |OpenSSH |
|Controller, | |13.1.3 | | | | |
|PEM, +------+------------+----------+ | | |
|PSM, |12.x |None |Not | | | |
|WebAccelerator,| | |applicable| | | |
|WebSafe) +------+------------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+---------------+------+------------+----------+----------+------+------------+
|ARX |6.x |None |6.2.0 - |Not |None |None |
| | | |6.4.0 |vulnerable| | |
+---------------+------+------------+----------+----------+------+------------+
|Enterprise |3.x |3.1.1 |None |High |7.5 |OpenSSH |
|Manager | | | | | | |
+---------------+------+------------+----------+----------+------+------------+
|BIG-IQ Cloud |4.x |4.0.0 - |None |High |7.5 |OpenSSH |
| | |4.5.0 | | | | |
+---------------+------+------------+----------+----------+------+------------+
|BIG-IQ Device |4.x |4.2.0 - |None |High |7.5 |OpenSSH |
| | |4.5.0 | | | | |
+---------------+------+------------+----------+----------+------+------------+
|BIG-IQ Security|4.x |4.0.0 - |None |High |7.5 |OpenSSH |
| | |4.5.0 | | | | |
+---------------+------+------------+----------+----------+------+------------+
|BIG-IQ ADC |4.x |4.5.0 |None |High |7.5 |OpenSSH |
+---------------+------+------------+----------+----------+------+------------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IQ +------+------------+----------+ | | |
|Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+------------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+---------------+------+------------+----------+----------+------+------------+
|BIG-IQ Cloud | | | | | | |
|and |1.x |1.0.0 |None |High |7.5 |OpenSSH |
|Orchestration | | | | | | |
+---------------+------+------------+----------+----------+------+------------+
|F5 iWorkflow |2.x |2.0.0 - |None |High |7.5 |OpenSSH |
| | |2.0.2 | | | | |
+---------------+------+------------+----------+----------+------+------------+
|LineRate |2.x |None |2.5.0 - |Not |None |None |
| | | |2.6.1 |vulnerable| | |
+---------------+------+------------+----------+----------+------+------------+
| |5.x |5.0.0 - |None | | | |
| | |5.1.0 | | | | |
|Traffix SDC +------+------------+----------+High |7.5 |OpenSSH |
| |4.x |4.0.0 - |None | | | |
| | |4.4.0 | | | | |
+---------------+------+------------+----------+----------+------+------------+
^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.
To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
.
Mitigation
To mitigate this vulnerability for BIG-IP products, F5 recommends that you
re-enable privilege separate, if you have disabled it. To do so, perform the
following procedure:
Impact of action: Improper modifications to the SSH configuration can prevent
SSH login. You should perform changes from the serial console.
1. Log in to the TMOS Shell (tmsh) by typing the following command:
tmsh
2. To determine if you have privilege separation disabled, type the following
command:
list /sys sshd
If you observe the following command output, then privilege separation is
disabled, and you should proceed to step 3.
sys sshd {
include "UsePrivilegeSeparation no"
}
If there is no command output, or you do not see the UsePrivilegeSeparation
no include statement in the output, then privilege separation is enabled,
and you do not need to proceed.
Note: For more information regarding the UsePrivilegeSeparation option,
refer to the manual page for sshd_config, by typing the following command
from the Advanced Shell (bash) prompt (not tmsh):
man sshd_config
3. To re-enable privilege separation, remove the custom include statement by
typing the following command:
edit /sys sshd
If there are multiple include statements, locate the UsePrivilegeSeparation
no line, and remove just that statement.
If UsePrivilegeSeparation no is the only include statement, replace that
statement with the word none.
For example:
modify sshd {
include none
}
4. Save your changes for the sshd configuration, and exit the vi editor.
5. To save the configuration, type the following command:
save /sys config
6. To exit tmsh, type q and press Enter.
Note: You do not need to restart the sshd service; the new changes are
active once you save the configuration.
Supplemental Information
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
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