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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.1561.3
TMM vulnerabilities CVE-2020-5878 and CVE-2020-5871
14 May 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-5878 CVE-2020-5871
Original Bulletin:
https://support.f5.com/csp/article/K35750231
https://support.f5.com/csp/article/K43450419
Comment: This bulletin contains four (4) F5 Networks security advisories.
Revision History: May 14 2020: Vendor released minor update
May 14 2020: Vendor released minor update
May 1 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K35750231:TMM vulnerability CVE-2020-5878
Security Advisory
Original Publication Date: 30 Apr, 2020
Security Advisory Description
Traffic Management Microkernel (TMM) may restart on BIG-IP Virtual Edition (VE)
while processing unusual IP traffic. (CVE-2020-5878)
Impact
The BIG-IP VE system may temporarily fail to process traffic as it recovers
from a TMM restart. If the BIG-IP VE system is configured for high availability
(HA), it fails over to a peer system.
Security Advisory Status
F5 Product Development has assigned ID 846365 (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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| | |15.1.0 |15.1.0.2 | | | |
| |15.x |15.0.0 - |15.0.1.2 | | | |
| | |15.0.1 | | | | |
| +------+----------+----------+ | | |
| |14.x |14.1.0 - |14.1.2.4 | | | |
|BIG-IP (LTM, AAM, | |14.1.2 | | | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |High |7.5 |TMM |
|GTM, Link | | |applicable| | | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|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 K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix and point release matrix
o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
systems (11.4.x and later)
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
- --------------------------------------------------------------------------------
K43450419:TMM vulnerability CVE-2020-5871
Security Advisory
Original Publication Date: 30 Apr, 2020
Security Advisory Description
Undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP
HTTP/2 virtual servers. The problem can occur when ciphers, which have been
blacklisted by the HTTP/2 RFC, are used on backend servers. This is a
data-plane issue. There is no control-plane exposure. (CVE-2020-5871)
Impact
This vulnerability affects only the virtual server associated with the HTTP/2
profile that has the HTTP MRF Router setting selected. The BIG-IP system may
temporarily fail to process traffic as it recovers from a Traffic Management
Microkernel (TMM) restart. If the BIG-IP system is configured for high
availability (HA), it fails over to a peer system.
Security Advisory Status
F5 Product Development has assigned ID 745377 (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 or |
| | |be |in | |1 |feature |
| | |vulnerable| | | | |
+----------------+------+----------+----------+----------+------+-------------+
| |15.x |None |15.0.0 | | | |
| +------+----------+----------+ | | |
| |14.x |14.1.0 - |14.1.2.4 | | | |
|BIG-IP (LTM, | |14.1.2 | | | | |
|AAM, AFM, +------+----------+----------+ | | |
|Analytics, APM, |13.x |None |Not | | |TMM, HTTP/2 |
|ASM, DNS, FPS, | | |applicable|High |7.5 |MRF router |
|GTM, Link +------+----------+----------+ | |functionality|
|Controller, PEM)|12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+----------------+------+----------+----------+----------+------+-------------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IQ +------+----------+----------+ | | |
|Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+----------------+------+----------+----------+----------+------+-------------+
|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
To avoid this vulnerability, you can review and ensure that backend HTTP/2
servers do not offer blacklisted cipher suites per Internet Engineering Task
Force (RFC 7540 Appendix A).
Note: This link takes you to a resource outside of AskF5. The third party could
remove the document without our knowledge.
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 K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
systems (11.4.x and later)
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
- ------------------------------------------------------------------------------
K43450419:TMM vulnerability CVE-2020-5871
Security Advisory
Original Publication Date: 30 Apr, 2020
Latest Publication Date: 14 May, 2020
Security Advisory Description
Undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP
HTTP/2 virtual servers. The problem can occur when ciphers, which have been
blacklisted by the HTTP/2 RFC, are used on backend servers. This is a
data-plane issue. There is no control-plane exposure. (CVE-2020-5871)
Impact
This vulnerability affects only the virtual server associated with the HTTP/2
profile that has the HTTP MRF Router setting selected. The BIG-IP system may
temporarily fail to process traffic as it recovers from a Traffic Management
Microkernel (TMM) restart. If the BIG-IP system is configured for high
availability (HA), it fails over to a peer system.
Security Advisory Status
F5 Product Development has assigned ID 745377 (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 or |
| | |be |in | |1 |feature |
| | |vulnerable| | | | |
+----------------+------+----------+----------+----------+------+-------------+
| |15.x |None |15.0.0 | | | |
| +------+----------+----------+ | | |
| |14.x |14.1.0 - |14.1.2.4^2| | | |
|BIG-IP (LTM, | |14.1.2 | | | | |
|AAM, AFM, +------+----------+----------+ | | |
|Analytics, APM, |13.x |None |Not | | |TMM, HTTP/2 |
|ASM, DNS, FPS, | | |applicable|High |7.5 |MRF router |
|GTM, Link +------+----------+----------+ | |functionality|
|Controller, PEM)|12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+----------------+------+----------+----------+----------+------+-------------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IQ +------+----------+----------+ | | |
|Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+----------------+------+----------+----------+----------+------+-------------+
|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.
^2BIG-IP 14.1.2.4 is not a supported release; please use a later release. Refer
to K5903: BIG-IP software support policy.
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
To avoid this vulnerability, you can review and ensure that backend HTTP/2
servers do not offer blacklisted cipher suites per Internet Engineering Task
Force (RFC 7540 Appendix A).
Note: This link takes you to a resource outside of AskF5. The third party could
remove the document without our knowledge.
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 K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
systems (11.4.x and later)
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
- ----------------------------------------------------------------------------
K35750231:TMM vulnerability CVE-2020-5878
Security Advisory
Original Publication Date: 30 Apr, 2020
Latest Publication Date: 14 May, 2020
Security Advisory Description
Traffic Management Microkernel (TMM) may restart on BIG-IP Virtual Edition (VE)
while processing unusual IP traffic. (CVE-2020-5878)
Impact
The BIG-IP VE system may temporarily fail to process traffic as it recovers
from a TMM restart. If the BIG-IP VE system is configured for high availability
(HA), it fails over to a peer system.
Security Advisory Status
F5 Product Development has assigned ID 846365 (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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| | |15.1.0 |15.1.0.2 | | | |
| |15.x |15.0.0 - |15.0.1.2 | | | |
| | |15.0.1 | | | | |
| +------+----------+----------+ | | |
| |14.x |14.1.0 - |14.1.2.4^2| | | |
|BIG-IP (LTM, AAM, | |14.1.2 | | | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |High |7.5 |TMM |
|GTM, Link | | |applicable| | | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|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.
^2BIG-IP 14.1.2.4 is not a supported release; please use a later release. Refer
to K5903: BIG-IP software support policy.
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 K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix and point release matrix
o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
systems (11.4.x and later)
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
- --------------------------END INCLUDED TEXT--------------------
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