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AUSCERT External Security Bulletin Redistribution
Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W
Series Default Credentials Vulnerability
20 August 2020
AusCERT Security Bulletin Summary
Product: Cisco vWAAS
Publisher: Cisco Systems
Operating System: Network Appliance
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
CVE Names: CVE-2020-3446
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Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W Series Default
Advisory ID: cisco-sa-waas-encsw-cspw-cred-hZzL29A7
First Published: 2020 August 19 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvg93455CSCvr36481
o A vulnerability in Cisco Virtual Wide Area Application Services (vWAAS)
with Cisco Enterprise NFV Infrastructure Software (NFVIS)-bundled images
for Cisco ENCS 5400-W Series and CSP 5000-W Series appliances could allow
an unauthenticated, remote attacker to log into the NFVIS CLI of an
affected device by using accounts that have a default, static password.
The vulnerability exists because the affected software has user accounts
with default, static passwords. An attacker with access to the NFVIS CLI of
an affected device could exploit this vulnerability by logging into the
CLI. A successful exploit could allow the attacker to access the NFVIS CLI
with administrator 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:
o Vulnerable Products
This vulnerability affects Cisco ENCS 5400-W Series and CSP 5000-W Series
appliances if they are running Cisco vWAAS with NFVIS-bundled image
releases 6.4.5, or 6.4.3d and earlier.
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 standalone
NFVIS running on Cisco ENCS 5000 Series and Cisco CSP 5000 Series devices,
and it does not affect standalone vWAAS software or WAAS software running
on Cisco Wide Area Virtualization Engine (WAVE) appliances.
o In order to exploit this vulnerability, an attacker would need to be able
to connect to the NFVIS CLI on an affected device. This would require
access to one of the following:
The Ethernet management port for the CPU on an affected ENCS 5400-W
Series appliance. This interface might be remotely accessible if a
routed IP is configured.
The first port on the four-port I350 PCIe Ethernet Adapter card on an
affected CSP 5000-W Series appliance. This interface might be remotely
accessible if a routed IP is configured.
A connection to the vWAAS software CLI and a valid user credential to
authenticate on the vWAAS CLI first.
A connection to the Cisco Integrated Management Controller (CIMC)
interface of the ENCS 5400-W Series or CSP 5000-W Series appliance and
a valid user credential to authenticate to the CIMC first.
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 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
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
Cisco fixed this vulnerability in Cisco vWAAS with NFVIS-bundled image
release 6.4.3e, 6.4.5a, and later releases.
Note : ENCS 5400-W Series and CSP 5000-W Series appliances do not support a
direct upgrade to vWAAS 6.4.3e and 6.4.5a releases from earlier releases.
In order to run a fixed release, customers must do a fresh install with the
required version of the Cisco WAAS Unified Package for ENCS 5400-W and CSP
5000-W appliances. Customers are advised to contact their support
organization for any assistance required with migrating to a fixed release.
To download the software from the Software Center on Cisco.com , do the
1. Click Browse all .
2. Choose Routers > Wan Optimization > Wide Area Application Services
(WAAS) Software > Wide Area Application Services (WAAS) Software .
3. Choose a release from the left pane of the Wide Area Application
Services (WAAS) Software page.
4. Download the Cisco WAAS Unified Package for ENCS-W and CSP-W Appliances
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-19 |
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