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AUSCERT External Security Bulletin Redistribution
ESB-2018.1872.4
F5 BIG-IP ARM denial of service patched
14 August 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP APM
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-5528
Original Bulletin:
https://support.f5.com/csp/article/K27044729
Revision History: August 14 2018: Updated security advisory status table.
June 29 2018: More information has been provided about
the CVE.
June 28 2018: Corrected duplicate bulletin ID
June 27 2018: Initial Release
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K27044729:TMM vulnerability CVE-2018-5528
Security Advisory
Original Publication Date: 27 Jun, 2018
Latest Publication Date: 14 Aug, 2018
Security Advisory Description
Under certain conditions, the Traffic Management Microkernel (TMM) may restart
and produce a core file while processing BIG-IP APM data. (CVE-2018-5528)
Impact
This vulnerability allows remote attackers to cause a denial of service (DoS)
on the BIG-IP system. The BIG-IP system will temporarily fail to process
traffic as it recovers from a TMM restart, and devices configured in a device
group may fail over.
Security Advisory Status
F5 Product Development has assigned ID 717900 (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 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 |None |14.0.0 | | | |
| +------+----------+----------+ | | |
| | |13.1.0.4 -| | | | |
| |13.x |13.1.0.7 |13.1.0.8 | | | |
| | |13.0.1 | | | | |
|BIG-IP (APM) +------+----------+----------+Medium |6.5 |APM |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-----------------+------+----------+----------+-----------+------+----------+
|BIG-IP (LTM, AAM,|13.x |None |Not | | | |
|AFM, Analytics, | | |applicable| | | |
|ASM, DNS, Edge +------+----------+----------+Not | | |
|Gateway, FPS, |12.x |None |Not |vulnerable^|None |None |
|GTM, Link | | |applicable|2 | | |
|Controller, PEM, +------+----------+----------+ | | |
|WebAccelerator) |11.x |None |Not | | | |
| | | |applicable| | | |
+-----------------+------+----------+----------+-----------+------+----------+
|ARX |6.x |None |Not |Not |None |None |
| | | |applicable|vulnerable | | |
+-----------------+------+----------+----------+-----------+------+----------+
|Enterprise | | |Not |Not | | |
|Manager |3.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+-----------------+------+----------+----------+-----------+------+----------+
| |6.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IQ +------+----------+----------+Not | | |
|Centralized |5.x |None |Not |vulnerable^|None |None |
|Management | | |applicable|2 | | |
| +------+----------+----------+ | | |
| |4.x |None |Not | | | |
| | | |applicable| | | |
+-----------------+------+----------+----------+-----------+------+----------+
|BIG-IQ Cloud and | | |Not |Not | | |
|Orchestration |1.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+-----------------+------+----------+----------+-----------+------+----------+
| | | |Not |Not | | |
|F5 iWorkflow |2.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+-----------------+------+----------+----------+-----------+------+----------+
|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| | | |
+-----------------+------+----------+----------+-----------+------+----------+
^1 The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
^2 The specified products contain the affected code. However, F5 identifies
the vulnerability status as Not vulnerable because the attacker cannot exploit
the code in default, standard, or recommended configurations.
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 K167: Downloading software and firmware from F5
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
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