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AUSCERT External Security Bulletin Redistribution
ESB-2019.2724
F5 Networks Linux kernel vulnerability CVE-2016-0723
22 July 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: BIG-IP
BIG-IQ
F5 iWorkflow
Traffic SDC
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0723
Reference: ASB-2016.0071
ASB-2016.0017
ESB-2016.1971
ESB-2016.1697
Original Bulletin:
https://support.f5.com/csp/article/K43650115
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K43650115:Linux kernel vulnerability CVE-2016-0723
Security Advisory
Original Publication Date: 30 Jul, 2016
Latest Publication Date: 20 Jul, 2019
Security Advisory Description
Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux
kernel through 4.4.1 allows local users to obtain sensitive information from
kernel memory or cause a denial of service (use-after-free and system crash) by
making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call. (
CVE-2016-0723)
Impact
Authenticated, local users with Advanced Shell (bash) access for BIG-IP,
BIG-IQ, F5 iWorkflow, or Enterprise Manager systems, or console access for
Traffix SDC systems, can install a specially crafted program to read very small
amounts (4 bytes) of memory or potentially cause a kernel panic.
Security Advisory Status
F5 Product Development has assigned ID 601271 (BIG-IP), ID 601289 (BIG-IQ), ID
601289-1 (F5 iWorkflow), ID 601291 (Enterprise Manager), and INSTALLER-2518
(Traffix SDC) to this vulnerability.
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 |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
| |13.0.0 - 13.1.1 | | | |
|BIG-IP LTM |12.0.0 - 12.1.4 |None |Medium |Linux kernel |
| |11.4.0 - 11.6.4 | | | |
| |11.2.1 | | | |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
|BIG-IP AAM |13.0.0 - 13.1.1 |None |Medium |Linux kernel |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
|BIG-IP AFM |13.0.0 - |None |Medium |Linux kernel |
| |13.1.1 | | | |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
|BIG-IP |13.0.0 - | | | |
|Analytics |13.1.1 |None |Medium |Linux kernel |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
| |11.2.1 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
| |13.0.0 - | | | |
|BIG-IP APM |13.1.1 |None |Medium |Linux kernel |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
| |11.2.1 | | | |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
| |13.0.0 - | | | |
|BIG-IP ASM |13.1.1 |None |Medium |Linux kernel |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
| |11.2.1 | | | |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
|BIG-IP DNS |13.0.0 - |None |Medium |Linux kernel |
| |13.1.1 | | | |
| |12.0.0 - 12.1.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge |11.2.1 |None |Medium |Linux kernel |
|Gateway |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |11.4.0 - 11.6.4 | | | |
|BIG-IP GTM |11.2.1 |None |Medium |Linux kernel |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
| |13.0.0 - | | | |
|BIG-IP Link |13.1.1 |None |Medium |Linux kernel |
|Controller |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
| |11.2.1 | | | |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
| |15.0.0 | | | |
| |14.0.0 - 14.1.0 | | | |
|BIG-IP PEM |13.0.0 - |None |Medium |Linux kernel |
| |13.1.1 | | | |
| |12.0.0 - 12.1.4 | | | |
| |11.4.0 - 11.6.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM |11.4.0 - 11.4.1 |None |Medium |Linux kernel |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP |11.2.1 |None |Medium |Linux kernel |
|WebAccelerator |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP WOM |11.2.1 |None |Medium |Linux kernel |
| |10.2.1 - 10.2.4 | | | |
+---------------+----------------+-----------------+----------+----------------+
|ARX |None |6.2.0 - 6.4.0 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise |3.1.1 |None |Medium |Linux kernel |
|Manager | | | | |
+---------------+----------------+-----------------+----------+----------------+
|FirePass |None |7.0.0 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device |4.2.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC |4.5.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ |5.0.0 - 6.1.0 | | | |
|Centralized |4.6.0 |None |Medium |Linux kernel |
|Management | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud | | | | |
|and |1.0.0 |None |Medium |Linux kernel |
|Orchestration | | | | |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow |2.0.0 - 2.3.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|LineRate |None |2.5.0 - 2.6.1 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|F5 MobileSafe |1.0.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|F5 WebSafe |1.0.0 |None |Medium |Linux kernel |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC |5.0.0 - 5.1.0 |None |Low* |Linux kernel |
| |4.0.0 - 4.4.0 | | | |
+---------------+----------------+-----------------+----------+----------------+
*The severity for Traffix SDC systems is Low because a local console connection
is required to exploit this vulnerability.
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.
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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