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AUSCERT External Security Bulletin Redistribution
ESB-2019.4766
TMM FastL4 vulnerability CVE-2019-6680
23 December 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-6680
Original Bulletin:
https://support.f5.com/csp/article/K53183580
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K53183580:TMM FastL4 vulnerability CVE-2019-6680
Security Advisory
Original Publication Date: 21 Dec, 2019
Security Advisory Description
While processing traffic through a standard virtual server that targets a
FastL4 virtual server (VIP on VIP), hardware appliances may stop responding. (
CVE-2019-6680)
Impact
This issue does not impact BIG-IP Virtual Edition systems, or appliances
without a high-speed bridge. On hardware platforms with a high-speed bridge,
this vulnerability allows remote attackers to cause a denial of service (DoS)
on the BIG-IP system.
The following hardware appliances do not have a high-speed bridge and are not
affected by this vulnerability. All other platforms are vulnerable.
Non-vulnerable platforms:
o BIG-IP 2000
o BIG-IP 4000
o BIG-IP 3600
o BIG-IP 1600
Security Advisory Status
F5 Product Development has assigned ID 778077 (BIG-IP) to this vulnerability.
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 |introduced|Severity |score^|component |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |15.0.0 - |15.1.0 | | | |
| | |15.0.1 |15.0.1.1 | | | |
| +------+----------+----------+ | | |
| | |14.1.0 - | | | | |
| |14.x |14.1.2 |14.1.2.1 | | | |
|BIG-IP (LTM, AAM, | |14.0.0 - |14.0.1.1 | | | |
|AFM, Analytics, | |14.0.1 | | | | |
|APM, ASM, DNS, FPS,+------+----------+----------+High |7.5 |Fast L4 |
|GTM, Link |13.x |13.1.0 - |None | | | |
|Controller, PEM) | |13.1.3 | | | | |
| +------+----------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.5.2 - |11.6.5.1 | | | |
| | |11.6.5 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow |2.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
^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
Supplemental Information
o K51812227: Understanding Security Advisory versioning
o K41942608: Overview of Security Advisory articles
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K9502: BIG-IP hotfix and point release matrix
o K13123: Managing BIG-IP product hotfixes (11.x - 15.x)
o K167: Downloading software and firmware from F5
o K9970: Subscribing to email notifications regarding F5 products
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