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AUSCERT External Security Bulletin Redistribution
ESB-2020.3643.2
Cisco FXOS Software Vulnerabilities
26 October 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco FXOS Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Root Compromise -- Existing Account
Cross-site Request Forgery -- Remote/Unauthenticated
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3459 CVE-2020-3457 CVE-2020-3456
CVE-2020-3455
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-pqZvmXCr
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxosfcm-csrf-uhO4e5BZ
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbp-XTuPkYTn
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-b63rwKPm
Revision History: October 26 2020: vendor updated cisco-sa-fxos-cmdinj-pqZvmXCr
October 23 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco FXOS Software Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-fxos-cmdinj-pqZvmXCr
First Published: 2020 October 21 16:00 GMT
Last Updated: 2020 October 23 13:21 GMT
Version 1.1: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvt69369CSCvt74037
CVE-2020-3457
CWE-78
CVSS Score:
6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o Update from October 23, 2020: Cisco has become aware of a new Cisco
Adaptive Security Appliance vulnerability that could affect the fixed
releases recommended for code trains 9.13 and 9.14 in the Fixed Software
section of this advisory. See the Cisco Adaptive Security Appliance
Software SSL/TLS Denial of Service Vulnerability for additional
information.
A vulnerability in the CLI of Cisco FXOS Software could allow an
authenticated, local attacker to inject arbitrary commands that are
executed with root privileges.
The vulnerability is due to insufficient input validation of commands
supplied by the user. An attacker could exploit this vulnerability by
authenticating to a device and submitting crafted input to the affected
command. A successful exploit could allow the attacker to execute commands
on the underlying operating system with root privileges.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-cmdinj-pqZvmXCr
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco FXOS Software
when running on the following platforms:
Firepower 1000 Series Appliances
Firepower 2100 Series Appliances
Firepower 4100 Series Appliances
Firepower 9300 Series Appliances
For information about which Cisco software releases were vulnerable at the
time of publication, see the Fixed Software section of this advisory. See
the Details section in the bug ID(s) at the top of this advisory for the
most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
Firepower 1000 Series and 2100 Series appliances use Cisco FXOS Software as
an underlying operating system, which is included in Cisco ASA Software
unified image bundles or in Cisco FTD Software unified image bundles.
At the time of publication, the release information in the following table
(s) was accurate. See the Details section in the bug ID(s) at the top of
this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column
indicates whether a release was affected by the vulnerability described in
this advisory and which release included the fix for this vulnerability.
ASA Software for Firepower 1000 Series and Firepower 2100 Series:
CSCvt74037
Cisco ASA Software Release First Fixed Release for this Vulnerability
9.8 9.8.4.29
9.9 9.9.2.80
9.10 9.10.1.40
9.12 9.12.4.3
9.13 9.13.1.13
9.14 Not vulnerable.
Note : Firepower 1000 Series and 2100 Series Appliances do not run ASA
Software earlier than the 9.8 release.
FTD Software for Firepower 1000 Series and Firepower 2100 Series:
CSCvt74037
Cisco FTD Software Release First Fixed Release for this Vulnerability
Earlier than 6.2.1 ^1 Migrate to a fixed release.
6.2.2 Migrate to a fixed release.
6.2.3 Migrate to a fixed release.
6.3.0 6.3.0.6 (future release)
6.4.0 6.4.0.9
6.5.0 6.5.0.5 (future release)
6.6.0 Not vulnerable.
Note : Firepower 1000 Series and 2100 Series Appliances do not run FTD
Software earlier than the 6.2.1 release.
1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
releases 6.2.0 and 6.2.1, have reached end of software maintenance.
Customers are advised to migrate to a supported release that includes the
fix for this vulnerability.
To upgrade to a fixed release of Cisco FTD Software, do one of the
following:
For devices that are managed by using Cisco Firepower Management Center
(FMC), use the FMC interface to install the upgrade. After installation
is complete, reapply the access control policy.
For devices that are managed by using Cisco Firepower Device Manager
(FDM), use the FDM interface to install the upgrade. After installation
is complete, reapply the access control policy.
FXOS Software for Firepower 4100 Series and Firepower 9300 Security
Appliances: CSCvt69369
Cisco FXOS Software Release First Fixed Release for this Vulnerability
Earlier than 2.2 Migrate to a fixed release.
2.2 Migrate to a fixed release.
2.3 Migrate to a fixed release.
2.4 2.4.1.266
2.6 2.6.1.204
2.7 2.7.1.131
2.8 2.8.1.125
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-cmdinj-pqZvmXCr
Revision History
o +---------+------------------------------+---------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+------------------------------+---------+--------+-------------+
| | Updated the Summary section | | | |
| | to provide information on a | | | |
| 1.1 | new vulnerability affecting | Summary | Final | 2020-OCT-23 |
| | fixed release | | | |
| | recommendations for code | | | |
| | trains 9.13 and 9.14. | | | |
+---------+------------------------------+---------+--------+-------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-21 |
+---------+------------------------------+---------+--------+-------------+
- --------------------------------------------------------------------------------
Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery
Vulnerability
Priority: High
Advisory ID: cisco-sa-fxosfcm-csrf-uhO4e5BZ
First Published: 2020 October 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvo94700CSCvp75856
CVE-2020-3456
CWE-352
Summary
o A vulnerability in the Cisco Firepower Chassis Manager (FCM) of Cisco FXOS
Software could allow an unauthenticated, remote attacker to conduct a
cross-site request forgery (CSRF) attack against a user of an affected
device.
The vulnerability is due to insufficient CSRF protections for the FCM
interface. An attacker could exploit this vulnerability by persuading a
targeted user to click a malicious link. A successful exploit could allow
the attacker to send arbitrary requests that could take unauthorized
actions on behalf of the targeted user.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxosfcm-csrf-uhO4e5BZ
Affected Products
o Vulnerable Products
This vulnerability affects Cisco FXOS Software when it is running on the
following platforms:
Firepower 2100 Series Appliances when running ASA Software in
non-appliance mode
Firepower 4100 Series Appliances
Firepower 9300 Series Appliances
Note : Firepower 2100 Series Appliances use Cisco FXOS Software as an
underlying operating system, which is included in Cisco ASA Software
unified image bundles.
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 1000 Series Appliances
Firepower 2100 Series Appliances when running ASA Software in appliance
mode
Firepower 2100 Series Appliances when running FTD Software
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license: https://www.cisco.com/c/en/us/products/
end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
In the following table(s), the left column lists Cisco software releases.
The right column indicates whether a release is affected by the
vulnerability described in this advisory and the first release that
includes the fix for this vulnerability.
Firepower 4100 Series and 9300 Series Appliances
FXOS Software for Firepower 4100 Series and Firepower 9300 Security
Appliances: CSCvo94700
Cisco FXOS Software Release First Fixed Release for this Vulnerability
Earlier than 2.2 Migrate to a fixed release.
2.2 Migrate to a fixed release.
2.3 Migrate to a fixed release.
2.4 Migrate to a fixed release.
2.6 Migrate to a fixed release.
2.7 Not vulnerable.
2.8 Not vulnerable.
Firepower 2100 Series Appliances
Firepower 2100 Series appliances use Cisco FXOS Software as an underlying
operating system, which is included in Cisco ASA Software unified image
bundles.
ASA Software for Firepower 2100 Series: CSCvp75856
Cisco ASA Software Release First Fixed Release for this Vulnerability
9.8 Migrate to a fixed release.
9.9 Migrate to a fixed release.
9.10 Migrate to a fixed release.
9.12 Migrate to a fixed release.
9.13 Not vulnerable.
9.14 Not vulnerable.
Note : The Firepower 2100 Series Appliances are affected when running ASA
Software in non-appliance mode.
Note : The Firepower 2100 Series Appliances were first supported on ASA
Software release 9.8.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxosfcm-csrf-uhO4e5BZ
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-21 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot
Bypass Vulnerability
Priority: High
Advisory ID: cisco-sa-fxos-sbbp-XTuPkYTn
First Published: 2020 October 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvt31171
CVE-2020-3455
CWE-693
CVSS Score:
6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the secure boot process of Cisco FXOS Software could
allow an authenticated, local attacker to bypass the secure boot
mechanisms.
The vulnerability is due to insufficient protections of the secure boot
process. An attacker could exploit this vulnerability by injecting code
into a specific file that is then referenced during the device boot
process. A successful exploit could allow the attacker to break the chain
of trust and inject code into the boot process of the device which would be
executed at each boot and maintain persistence across reboots.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-sbbp-XTuPkYTn
Affected Products
o Vulnerable Products
This vulnerability affects Cisco FXOS Software releases when running on the
following platforms:
Firepower 4100 Series Appliances
Firepower 9300 Series Appliances
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory.
For the Firepower 1000 Series Appliances and Firepower 2100 Series
Appliances, see the following advisory:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-sbbyp-KqP6NgrE
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories page , to determine exposure and a complete
upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Cisco FXOS Software
Cisco FXOS Software Release First Fixed Release for This Vulnerability
Earlier than 2.2 Migrate to a fixed release.
2.2 Migrate to a fixed release.
2.3 Migrate to a fixed release.
2.4 2.4.1.268
2.6 2.6.1.214
2.7 2.7.1.131
2.8 Not vulnerable.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-sbbp-XTuPkYTn
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-21 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco FXOS Software for Firepower 4100/9300 Series Command Injection
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-fxos-cmdinj-b63rwKPm
First Published: 2020 October 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvt65399
CVE-2020-3459
CWE-78
CVSS Score:
6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco FXOS Software could allow an
authenticated, local attacker to inject arbitrary commands that are
executed with root privileges.
The vulnerability is due to insufficient input validation of commands
supplied by the user. An attacker could exploit this vulnerability by
authenticating to a device and submitting crafted input to the affected
command. A successful exploit could allow the attacker to execute commands
on the underlying operating system with root privileges.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-cmdinj-b63rwKPm
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco FXOS Software
when running on the following platforms:
Firepower 4100 Series Appliances
Firepower 9300 Series Appliances
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory. See the Details section in the bug
ID(s) at the top of this advisory for the most complete and current
information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Firepower 1000
Series Appliances or Firepower 2100 Series Appliances.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories page , to determine exposure and a complete
upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
At the time of publication, the release information in the following table
(s) was accurate. See the Details section in the bug ID(s) at the top of
this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column
indicates whether a release was affected by the vulnerability described in
this advisory and which release included the fix for this vulnerability.
Cisco FXOS Software
Cisco FXOS Software Release First Fixed Release for this Vulnerability
Earlier than 2.2 Migrate to a fixed release.
2.2 Migrate to a fixed release.
2.3 Migrate to a fixed release.
2.4 2.4.1.266
2.6 2.6.1.204
2.7 2.7.1.131
2.8 2.8.1.125
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-fxos-cmdinj-b63rwKPm
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-21 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
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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
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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
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Previous advisories and external security bulletins can be retrieved from:
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===========================================================================
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.
===========================================================================
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The post ESB-2020.3643.2 – UPDATE [Cisco] Cisco FXOS Software: Multiple vulnerabilities appeared first on Malware Devil.
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