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AUSCERT External Security Bulletin Redistribution
ESB-2021.0243.2
Cisco DNA Center multiple vulnerabilities
27 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco DNA Center
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Cross-site Request Forgery -- Remote with User Interaction
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-1303 CVE-2021-1265 CVE-2021-1264
CVE-2021-1257
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-cmdinj-erumsWh9
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-csrf-dC83cMcV
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnacid-OfeeRjcn
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-privesc-6qjA3hVh
Comment: This bulletin contains four (4) Cisco Systems security advisories.
Revision History: January 27 2021: Vendor updated advisories: cisco-sa-dnac-csrf-dC83cMcV,cisco-sa-dnacid-OfeeRjcn
January 21 2021: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco DNA Center Command Runner Command Injection Vulnerability
Priority: Critical
Advisory ID: cisco-sa-dnac-cmdinj-erumsWh9
First Published: 2021 January 20 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvq39748
CVE Names: CVE-2021-1264
CWEs: CWE-78
Summary
o A vulnerability in the Command Runner tool of Cisco DNA Center could allow
an authenticated, remote attacker to perform a command injection attack.
The vulnerability is due to insufficient input validation by the Command
Runner tool. An attacker could exploit this vulnerability by providing
crafted input during command execution or via a crafted command runner API
call. A successful exploit could allow the attacker to execute arbitrary
CLI commands on devices managed by Cisco DNA Center.
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-dnac-cmdinj-erumsWh9
Affected Products
o Vulnerable Products
This vulnerability affects Cisco DNA Center Software releases earlier than
1.3.1.0.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Details
o The Command Runner application maintains a list of approved commands that
can be executed on a managed device. An attacker could exploit this
vulnerability to enter additional commands on the managed device CLI or
configuration CLI, bypassing the approved command list.
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
This vulnerability is fixed in Cisco DNA Center Software releases 1.3.1.0
and later.
Cisco DNA Center is a dedicated physical appliance that is purchased from
Cisco with the DNA Center ISO image preinstalled. System updates are
available for installation from the Cisco cloud and are not available for
download from the Software Center on Cisco.com. To upgrade to a fixed
release of Cisco DNA Center Software, administrators can use the System
Updates feature of the software. For more information, refer to the Cisco
DNA Center Upgrade Guide for the release to be installed.
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-dnac-cmdinj-erumsWh9
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-JAN-20 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco DNA Center Cross-Site Request Forgery Vulnerability
Priority: High
Advisory ID: cisco-sa-dnac-csrf-dC83cMcV
First Published: 2021 January 20 16:00 GMT
Last Updated: 2021 January 25 14:01 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr12997
CVE Names: CVE-2021-1257
CWEs: CWE-352
CVSS Score:
7.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco DNA Center
Software could allow an unauthenticated, remote attacker to conduct a
cross-site request forgery (CSRF) attack to manipulate an authenticated
user into executing malicious actions without their awareness or consent.
The vulnerability is due to insufficient CSRF protections for the web-based
management interface of an affected device. An attacker could exploit this
vulnerability by persuading a web-based management user to follow a
specially crafted link. A successful exploit could allow the attacker to
perform arbitrary actions on the device with the privileges of the
authenticated user. These actions include modifying the device
configuration, disconnecting the user's session, and executing Command
Runner commands.
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-dnac-csrf-dC83cMcV
Affected Products
o Vulnerable Products
This vulnerability affects Cisco DNA Center Software releases earlier than
2.1.1.0.
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
This vulnerability is fixed in Cisco DNA Center Software releases
*2.1.1.0,*2.1.2.0, *2.1.2.3, and 2.1.2.4 and later.
*Limited Availability Releases
Cisco DNA Center is a dedicated physical appliance that is purchased from
Cisco with the DNA Center ISO image preinstalled. System updates are
available for installation from the Cisco cloud and are not available for
download from the Software Center on Cisco.com. To upgrade to a fixed
release of Cisco DNA Center Software, administrators can use the System
Updates feature of the software. For more information, refer to the Cisco
DNA Center Upgrade Guide for the release to be installed.
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 Cisco would like to thank Benoit Malaboeuf and Dylan Garnaud from Orange
for reporting this vulnerability.
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-dnac-csrf-dC83cMcV
Revision History
o +---------+---------------+------------------------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+---------------+------------------------+--------+-------------+
| 1.1 | Added release | Vulnerable Products | Final | 2021-JAN-25 |
| | 2.1.1.0. | and Fixed Releases | | |
+---------+---------------+------------------------+--------+-------------+
| | Initial | | | |
| 1.0 | public | - | Final | 2021-JAN-20 |
| | release. | | | |
+---------+---------------+------------------------+--------+-------------+
- --------------------------------------------------------------------------------
Cisco DNA Center Information Disclosure Vulnerability
Priority: High
Advisory ID: cisco-sa-dnacid-OfeeRjcn
First Published: 2021 January 20 16:00 GMT
Last Updated: 2021 January 26 14:34 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr85371
CVE Names: CVE-2021-1265
CWEs: CWE-312
CVSS Score:
7.7 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the configuration archive functionality of Cisco DNA
Center could allow any privilege-level authenticated, remote attacker to
obtain the full unmasked running configuration of managed devices.
The vulnerability is due to the configuration archives files being stored
in clear text, which can be retrieved by various API calls. An attacker
could exploit this vulnerability by authenticating to the device and
executing a series of API calls. A successful exploit could allow the
attacker to retrieve the full unmasked running configurations of managed
devices.
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-dnacid-OfeeRjcn
Affected Products
o Vulnerable Products
This vulnerability affects Cisco DNA Center Software releases earlier than
2.1.1.0.
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
This vulnerability is fixed in Cisco DNA Center Software releases *2.1.1.0,
*2.1.2.0, *2.1.2.3 and 2.1.2.4 and later.
*Limited Availability Releases
Cisco DNA Center is a dedicated physical appliance that is purchased from
Cisco with the DNA Center ISO image preinstalled. System updates are
available for installation from the Cisco cloud and are not available for
download from the Software Center on Cisco.com. To upgrade to a fixed
release of Cisco DNA Center Software, administrators can use the System
Updates feature of the software. For more information, refer to the Cisco
DNA Center Upgrade Guide for the release to be installed.
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 by Prabudas Varadarajan of Cisco 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-dnacid-OfeeRjcn
Revision History
o +---------+------------------------+---------------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+------------------------+---------------+--------+-------------+
| | Corrected first fixed | Vulnerable | | |
| 1.1 | version to be 2.1.1.0 | Products & | Final | 2021-JAN-20 |
| | rather than 2.1.2.0 | Fixed | | |
| | | Releases | | |
+---------+------------------------+---------------+--------+-------------+
| 1.0 | Initial public | - | Final | 2021-JAN-20 |
| | release. | | | |
+---------+------------------------+---------------+--------+-------------+
- --------------------------------------------------------------------------------
Cisco DNA Center Privilege Escalation Vulnerability
Priority: Medium
Advisory ID: cisco-sa-dnac-privesc-6qjA3hVh
First Published: 2021 January 20 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvq32337
CVE Names: CVE-2021-1303
CWEs: CWE-266
CVSS Score:
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the user management roles of Cisco DNA Center could
allow an authenticated, remote attacker to execute unauthorized commands on
an affected device.
The vulnerability is due to improper enforcement of actions for assigned
user roles. An attacker could exploit this vulnerability by authenticating
as a user with an Observer role and executing commands on the affected
device. A successful exploit could allow a user with the Observer role to
execute commands to view diagnostic information of the devices that Cisco
DNA Center manages.
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-dnac-privesc-6qjA3hVh
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco DNA Center
Software releases earlier than Release 2.1.2.0.
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.
At the time of publication, Cisco DNA Center Software releases *2.1.2.0,
*2.1.2.3, and 2.1.2.4 and later contained the fix for this vulnerability.
*Limited Availability Releases
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
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-dnac-privesc-6qjA3hVh
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-JAN-20 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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