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AUSCERT External Security Bulletin Redistribution
ESB-2018.1015
K32262483:NTP vulnerability CVE-2017-6451
5 April 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6451
Reference: ASB-2017.0219
ESB-2017.2775
ESB-2017.2425
ESB-2017.0973
Original Bulletin:
https://support.f5.com/csp/article/K32262483
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K32262483:NTP vulnerability CVE-2017-6451
Security Advisory
Original Publication Date: 09 May, 2017
Latest Publication Date: 03 Apr, 2018
Security Advisory Description
The mx4200_send function in the legacy MX4200 refclock in NTP before 4.2.8p10
and 4.3.x before 4.3.94 does not properly handle the return value of the
snprintf function, which allows local users to execute arbitrary code via
unspecified vectors, which trigger an out-of-bounds memory write. (
CVE-2017-6451)
Impact
This vulnerability allows local users to execute arbitrary code via
unspecified vectors, which triggers an out-of-bounds memory write.
Security Advisory Status
F5 Product Development has assigned ID 656912 (BIG-IP), ID 657597 (BIG-IQ), ID
657596 (Enterprise Manager), and ID 456789 (F5 iWorkflow) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H32262483 on
the Diagnostics > Identified > Low screen.
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 |be not vulnerable|Severity |component or |
| |vulnerable | | |feature |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP LTM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP AAM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP AFM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
|Analytics |11.4.0 - 11.6.1|12.1.3 | | |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP APM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP ASM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP DNS |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| | |12.1.3 | | |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP Edge |11.2.1 |None |Low |NTP package |
|Gateway | | | | |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP GTM |11.4.0 - 11.6.1|None |Low |NTP package |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP Link |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
|Controller |11.4.0 - 11.6.1|12.1.3 | | |
| |11.2.1 | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP PEM |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.4.0 - 11.6.1|12.1.3 | | |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP PSM |11.4.0 - 11.4.1|None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP |11.2.1 |None |Low |NTP package |
|WebAccelerator | | | | |
+---------------+---------------+-----------------+----------+---------------+
| |13.0.0 |13.1.0 | | |
|BIG-IP WebSafe |12.0.0 - 12.1.2|13.0.1 |Low |NTP package |
| |11.6.0 - 11.6.1|12.1.3 | | |
+---------------+---------------+-----------------+----------+---------------+
|ARX |None |6.2.0 - 6.4.0 |Not |None |
| | | |vulnerable| |
+---------------+---------------+-----------------+----------+---------------+
|Enterprise |3.1.1 |None |Low |NTP package |
|Manager | | | | |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Cloud |4.4.0 - 4.5.0 |None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Device |4.4.0 - 4.5.0 |None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Security|4.4.0 - 4.5.0 |None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ ADC |4.5.0 |None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ |5.0.0 - 5.2.0 | | | |
|Centralized |4.6.0 |None |Low |NTP package |
|Management | | | | |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Cloud | | | | |
|and |1.0.0 |None |Low |NTP package |
|Orchestration | | | | |
+---------------+---------------+-----------------+----------+---------------+
|F5 iWorkflow |2.0.0 - 2.1.0 |None |Low |NTP package |
+---------------+---------------+-----------------+----------+---------------+
|LineRate |None |2.5.0 - 2.6.2 |Not |None |
| | | |vulnerable| |
+---------------+---------------+-----------------+----------+---------------+
|Traffix SDC |5.0.0 - 5.1.0 |None |Low |NTP package |
| |4.0.0 - 4.4.0 | | | |
+---------------+---------------+-----------------+----------+---------------+
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, avoid enabling the MX4200 refclock.
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
o K167: Downloading software and firmware from F5
o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
o K9502: BIG-IP hotfix matrix
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix matrix
o K10942: Installing OPSWAT hotfixes on BIG-IP APM systems
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