Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.2935.2
BIG-IP restjavad vulnerability CVE-2020-5912
14 September 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: BIG-IP
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Overwrite Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-5912
Original Bulletin:
https://support.f5.com/csp/article/K12936322
Revision History: September 14 2020: Vendor updated advisory
August 26 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K12936322:BIG-IP restjavad vulnerability CVE-2020-5912
Security Advisory
Original Publication Date: 26 Aug, 2020
Latest Publication Date: 12 Sep, 2020
Security Advisory Description
The restjavad process dump command does not follow current best coding
practices and may overwrite arbitrary files. (CVE-2020-5912)
Impact
A locally authenticated attacker may exploit this vulnerability by overwriting
arbitrary files on the file system.
Security Advisory Status
F5 Product Development has assigned ID 837773 (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 be |introduced|Severity |score^|component |
| | |vulnerable |in | |1 |or feature|
+----------------+------+-------------+----------+----------+------+----------+
| |16.x |None |16.0.0 | | | |
| +------+-------------+----------+ | | |
| |15.x |15.1.0 |15.1.0.5 | | | |
| | |15.0.0-15.0.1|15.0.1.4 | | | |
|BIG-IP (LTM, +------+-------------+----------+ | | |
|AAM, Advanced |14.x |14.1.0 - |14.1.2.5 | | | |
|WAF, AFM, | |14.1.2 | | | | |
|Analytics, APM, +------+-------------+----------+High |7.1 |restjavad |
|ASM, DDHD, DNS, |13.x |13.1.0 - |13.1.3.4 | | | |
|FPS, GTM, Link | |13.1.3 | | | | |
|Controller, PEM,+------+-------------+----------+ | | |
|SSLO) |12.x |12.1.0 - |12.1.5.2 | | | |
| | |12.1.5 | | | | |
| +------+-------------+----------+ | | |
| |11.x |11.6.1 - |11.6.5.2 | | | |
| | |11.6.5 | | | | |
+----------------+------+-------------+----------+----------+------+----------+
| |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 mitigate this vulnerability for the BIG-IP system, you should permit
management access to F5 products only over a secure network and limit shell
access to trusted users. For more information, refer to K13309: Restricting
access to the Configuration utility by source IP address (11.x - 16.x) and
K13092: Overview of securing access to the BIG-IP system.
Supplemental Information
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 - 16.x)
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
o K13092: Overview of securing access to the BIG-IP system
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=S4Yw
-----END PGP SIGNATURE-----