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AUSCERT External Security Bulletin Redistribution
ESB-2022.4401.3
K12055286: Intel CPU vulnerability CVE-2021-33060
4 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5OS-A
Publisher: F5 Networks
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33060
Original Bulletin:
https://support.f5.com/csp/article/K12055286
Revision History: November 4 2022: Vendor Update
November 1 2022: F5 has released updates for F5OS-A
September 7 2022: Initial Release
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K12055286: Intel CPU vulnerability CVE-2021-33060
Original Publication Date: 07 Sep, 2022
Latest Publication Date: 03 Nov, 2022
Security Advisory Description
Out-of-bounds write in the BIOS firmware for some Intel(R) Processors may allow
an authenticated user to potentially enable escalation of privilege via local
access. (CVE-2021-33060)
Impact
This vulnerability may allow an authenticated local user to potentially enable
escalation of privilege through local access.
The following platforms are vulnerable:
o rSeries 5000
o rSeries 10000
For more information, refer to Hardware Knowledge Centers.
Security Advisory Status
F5 Product Development has assigned ID 1141801 (F5OS-A) 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.
Note: After a fix is introduced for a given minor branch, that fix applies to
all subsequent maintenance and point releases for that branch, and no
additional fixes for that branch will be listed in the table. For example, when
a fix is introduced in 14.1.2.3, the fix also applies to 14.1.2.4, and all
later 14.1.x releases (14.1.3.x., 14.1.4.x). For more information, refer to
K51812227: Understanding security advisory versioning. Additionally, software
versions preceding those listed in the Applies to (see versions) box of this
article have reached the End of Technical Support (EoTS) phase of their
lifecycle and are no longer evaluated for security issues. For more
information, refer to the Security hotfixes section of K4602: Overview of the
F5 security vulnerability response policy.
+------------+------+--------------+----------+----------+------+-------------+
| | |Versions known|Fixes | |CVSSv3|Vulnerable |
|Product |Branch|to be |introduced|Severity |score^|component or |
| | |vulnerable^1 |in | |2 |feature |
+------------+------+--------------+----------+----------+------+-------------+
| |17.x |None |Not | | | |
| | | |applicable| | | |
| +------+--------------+----------+ | | |
| |16.x |None |Not | | | |
| | | |applicable| | | |
| +------+--------------+----------+ | | |
|BIG-IP (all |15.x |None |Not |Not |None |None |
|modules) | | |applicable|vulnerable| | |
| +------+--------------+----------+ | | |
| |14.x |None |Not | | | |
| | | |applicable| | | |
| +------+--------------+----------+ | | |
| |13.x |None |Not | | | |
| | | |applicable| | | |
+------------+------+--------------+----------+----------+------+-------------+
|BIG-IP SPK |1.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+------------+------+--------------+----------+----------+------+-------------+
| |8.x |None |Not | | | |
|BIG-IQ | | |applicable|Not | | |
|Centralized +------+--------------+----------+vulnerable|None |None |
|Management |7.x |None |Not | | | |
| | | |applicable| | | |
+------------+------+--------------+----------+----------+------+-------------+
|F5OS-A |1.x |1.1.1 - 1.2.0 |None |High |7.8 |CPU |
+------------+------+--------------+----------+----------+------+-------------+
|F5OS-C |1.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+------------+------+--------------+----------+----------+------+-------------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+------------+------+--------------+----------+----------+------+-------------+
^1F5 evaluates only software versions that have not yet reached the End of
Technical Support (EoTS) phase of their lifecycle.
^2The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by installing a version listed in
the Fixes introduced in column. If the Fixes introduced in column does not list
a version for your branch, then no update candidate currently exists for that
branch and F5 recommends upgrading to a version with the fix (refer to the
table).
If the Fixes introduced in column lists a version prior to the one you are
running, in the same branch, then your version should have the fix.
Mitigation
As local access is required to exploit this vulnerability, you can mitigate
this by restricting access to the affected F5 product (on the host OS and in a
container or tenant) to only trusted users.
Supplemental Information
o K41942608: Overview of security advisory articles
o K4602: Overview of the F5 security vulnerability response policy
o K8986: F5 product support policies
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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