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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.4425.2
QEMU vulnerability CVE-2020-14364 and CVE-2020-25084
24 August 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: BIG-IP
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-25084 CVE-2020-14364
Reference: ESB-2020.4246
ESB-2020.3678
ESB-2020.3597
ESB-2020.3495
Original Bulletin:
https://support.f5.com/csp/article/K09081535
https://support.f5.com/csp/article/K41301038
Comment: This bulletin contains two (2) F5 Networks security advisories.
Revision History: August 24 2021: Vendor updated fixed software details for K09081535
December 16 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K09081535: QEMU vulnerability CVE-2020-14364
Original Publication Date: 16 Dec, 2020
Latest Publication Date: 24 Aug, 2021
Security Advisory Description
An out-of-bounds read/write access flaw was found in the USB emulator of the
QEMU in versions before 5.2.0. This issue occurs while processing USB packets
from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the
do_token_in, do_token_out routines. This flaw allows a guest user to crash the
QEMU process, resulting in a denial of service, or the potential execution of
arbitrary code with the privileges of the QEMU process on the host. (
CVE-2020-14364)
Impact
A local attacker may be able to cause a denial of service (DoS) or execute
arbitrary code on the host. This issue affects all BIG-IP platforms that
support Virtual Clustered Multiprocessing (vCMP).
Security Advisory Status
F5 Product Development has assigned ID 966901 (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| | | | |
+---------------------+------+----------+----------+--------+------+----------+
| |16.x |16.0.0 - |16.1.0 | | | |
| | |16.0.1 | | | | |
| +------+----------+----------+ | | |
| |15.x |15.1.0 - |None | | | |
| | |15.1.2 | | | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|Advanced WAF, AFM, |14.x |14.1.0 - |14.1.4.4 | | | |
|Analytics, APM, ASM, | |14.1.4 | | | |vCMP host |
|DDHD, DNS, FPS, GTM, +------+----------+----------+Medium |5.0 |and vCMP |
|Link Controller, PEM,|13.x |13.1.0 - |None | | |guest |
|SSLO) | |13.1.3 | | | | |
| +------+----------+----------+ | | |
| |12.x |12.1.0 - |Will not | | | |
| | |12.1.5 |fix | | | |
| +------+----------+----------+ | | |
| |11.x |11.6.1 - |Will not | | | |
| | |11.6.5 |fix | | | |
+---------------------+------+----------+----------+--------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |None |None |None |
|Management | | |applicable| | | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+---------------------+------+----------+----------+--------+------+----------+
|Traffix SDC |5.x |None |Not |None |None |None |
| | | |applicable| | | |
+---------------------+------+----------+----------+--------+------+----------+
^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
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, you should only permit access to the USB
interface on the BIG-IP system to trusted users. In addition, you should only
permit management access to the BIG-IP system over a secure network and limit
shell access to only trusted users. For more information about securing access
to BIG-IP systems, 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
- --------------------------------------------------------------------------------
K41301038: QEMU vulnerability CVE-2020-25084
Original Publication Date: 16 Dec, 2020
Security Advisory Description
QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map
return value is not checked. (CVE-2020-25084)
Impact
A local attacker may cause a denial-of-service (DoS) or execute arbitrary code
on platforms that support Virtual Clustered Multiprocessing (vCMP). This issue
only affects BIG-IP platforms that support vCMP.
Security Advisory Status
F5 Product Development has assigned ID 966821 (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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |16.x |16.0.0 - |None | | | |
| | |16.0.1 | | | | |
| +------+----------+----------+ | | |
| |15.x |15.1.0 - |None | | | |
| | |15.1.2 | | | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|Advanced WAF, AFM, |14.x |14.1.0 - |None | | | |
|Analytics, APM, | |14.1.3 | | | | vCMP host|
|ASM, DDHD, DNS, +------+----------+----------+Low |3.2 |and vCMP |
|FPS, GTM, Link |13.x |13.1.0 - |None | | |guest |
|Controller, PEM, | |13.1.3 | | | | |
|SSLO) +------+----------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.6.1 - |None | | | |
| | |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, only permit access to the USB interface on the
BIG-IP system to trusted users. In addition, only permit management access to
the BIG-IP system over a secure network and limit shell access to only trusted
users. For more information about securing access to BIG-IP systems, 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
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