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AUSCERT External Security Bulletin Redistribution
Cisco DNA Center Information Disclosure Vulnerability
6 August 2020
AusCERT Security Bulletin Summary
Product: Cisco DNA Center
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2020-3411
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Cisco DNA Center Information Disclosure Vulnerability
Advisory ID: cisco-sa-dna-info-disc-3bz8BCgR
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr54376
o A vulnerability in Cisco DNA Center software could allow an unauthenticated
remote attacker access to sensitive information on an affected system.
The vulnerability is due to improper handling of authentication tokens by
the affected software. An attacker could exploit this vulnerability by
sending a crafted HTTP request to an affected device. A successful exploit
could allow the attacker access to sensitive device information, which
includes configuration files.
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:
o Vulnerable Products
This vulnerability affects all 1.3.x versions of Cisco DNA Center software
releases prior to 22.214.171.124.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
o There are no workarounds that address this vulnerability.
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/
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
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
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
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
This vulnerability is fixed in Cisco DNA Center software releases 126.96.36.199
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
Digital Network Architecture Center Administrator Guide and the release
notes 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.
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.
| Version | Description | Section | Status | Date |
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
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