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AUSCERT External Security Bulletin Redistribution
ESB-2018.1898.3
DoS patched in F5 BIG-IP products
5 November 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-5732
Original Bulletin:
https://support.f5.com/csp/article/K08306700
Revision History: November 5 2018: Added 14.0.0.3 as the fix for the
14.0.0 line.
August 14 2018: Updated security advisory status table.
June 29 2018: Initial Release
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K08306700:DHCP client vulnerability CVE-2018-5732
Security Advisory
Original Publication Date: 20 Mar, 2018
Latest Publication Date: 14 Aug, 2018
Security Advisory Description
An out-of-bound memory access flaw was found in the way dhclient processed a
DHCP response packet. A malicious DHCP server could potentially use this flaw
to crash dhclient processes running on DHCP client machines via a crafted DHCP
response packet. (CVE-2018-5732)
Impact
An attacker can cause a denial of service (DoS) of DHCP functionality on the
F5 product management interface.
Security Advisory Status
F5 Product Development has assigned ID 709688 (BIG-IP), ID 710560 (BIG-IQ),
and ID 710557 (Enterprise Manager) to this vulnerability. Additionally, BIG-IP
iHealth may list Heuristic H08306700 on the Diagnostics > Identified > High
page.
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 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 |introduced|Severity |score^|component |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
|-------------------+------+----------+----------+----------+------+----------|
| |14.x |14.0.0 |14.0.0.3 | | | |
|BIG-IP (LTM, AAM, |------+----------+----------| | | |
|AFM, Analytics, |13.x |13.0.0 - |13.1.0.8 | | | |
|APM, ASM, DNS, Edge| |13.1.0 | | | |dhclient |
|Gateway, GTM, Link |------+----------+----------|High |7.5 |(DHCP on |
|Controller, PEM, |12.x |12.1.0 - |12.1.3.6 | | |the MGMT |
|WebAccelerator, | |12.1.3 | | | |interface)|
|WebSafe) |------+----------+----------| | | |
| |11.x |11.2.1 - |None | | | |
| | |11.6.3 | | | | |
|-------------------+------+----------+----------+----------+------+----------|
| | | | | | |dhclient |
|Enterprise Manager |3.x |3.1.1 |None |High |7.5 |(DHCP on |
| | | | | | |the MGMT |
| | | | | | |interface)|
|-------------------+------+----------+----------+----------+------+----------|
| |6.x |6.0.0 |6.0.1 | | | |
| |------+----------+----------| | | |
|BIG-IQ Centralized |5.x |5.0.0 - |None |High |7.5 |None |
|Management | |5.4.0 | | | | |
| |------+----------+----------| | | |
| |4.x |4.6.0 |None | | | |
|-------------------+------+----------+----------+----------+------+----------|
| | | | | | |dhclient |
|BIG-IQ Cloud and |1.x |1.0.0 |None |High |7.5 |(DHCP on |
|Orchestration | | | | | |the MGMT |
| | | | | | |interface)|
|-------------------+------+----------+----------+----------+------+----------|
| | | | | | |dhclient |
|F5 iWorkflow |2.x |2.0.1 - |None |High |7.5 |(DHCP on |
| | |2.3.0 | | | |the MGMT |
| | | | | | |interface)|
|-------------------+------+----------+----------+----------+------+----------|
|LineRate |2.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
|-------------------+------+----------+----------+----------+------+----------|
| |5.x |None |Not | | | |
| | | |applicable|Not | | |
|Traffix SDC |------+----------+----------|vulnerable|None |None |
| |4.x |None |Not | | | |
| | | |applicable| | | |
+-----------------------------------------------------------------------------+
^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 Fixes introduced in 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
None
- --------------------------END INCLUDED TEXT--------------------
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