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AUSCERT External Security Bulletin Redistribution
ESB-2017.1434
Cisco Prime Data Center Network Manager Debug Remote Code
Execution Vulnerability
8 June 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Prime Data Center Network Manager
Publisher: Cisco Systems
Operating System: Windows
Linux variants
Network Appliance
Impact/Access: Root Compromise -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6639
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-dcnm1
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Cisco Prime Data Center Network Manager Debug Remote Code Execution Vulnerability
Critical
Advisory ID: cisco-sa-20170607-dcnm1
First Published: 2017 June 7 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvd09961
CVSS Score: Base 9.8, Temporal 9.8
CVE-2017-6639
CWE-16
Summary
A vulnerability in the role-based access control (RBAC) functionality
of Cisco Prime Data Center Network Manager (DCNM) could allow an
unauthenticated, remote attacker to access sensitive information or execute
arbitrary code with root privileges on an affected system.
The vulnerability is due to the lack of authentication and authorization
mechanisms for a debugging tool that was inadvertently enabled in the
affected software. An attacker could exploit this vulnerability by remotely
connecting to the debugging tool via TCP. A successful exploit could allow
the attacker to access sensitive information about the affected software
or execute arbitrary code with root privileges on the affected system.
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-20170607-dcnm1
Affected Products
Vulnerable Products
This vulnerability affects Cisco Prime Data Center Network Manager (DCNM)
Software Releases 10.1(1) and 10.1(2) for Microsoft Windows, Linux, and
Virtual Appliance platforms.
To determine which release of Cisco Prime DCNM Software is running on a
computer, administrators can use a web browser to connect to the Cisco
Prime DCNM client via HTTPS. The release number appears on the login page
for the software, for example:
Data Center Network Manager
Version 10.1(2)
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
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:
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.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:
http://www.cisco.com/en/US/support/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
Customers should upgrade to an appropriate release as indicated in this
section. To help ensure a complete upgrade solution, consider that this
advisory is part of a collection that includes the following advisories:
cisco-sa-20170607-dcnm1: Cisco Prime Data Center Network Manager Debug
Remote Code Execution Vulnerability
cisco-sa-20170607-dcnm2: Cisco Prime Data Center Network Manager Static
Credential Vulnerability
This vulnerability is fixed in Cisco Prime DCNM Software releases 10.2(1)
and later. Cisco Prime DCNM Software can be downloaded from the Software
Center on Cisco.com by navigating to Products > Cloud and Systems Management
> Data Center Infrastructure Management > Data Center Network Manager.
Exploitation and Public Announcements
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
Cisco would like to thank security researcher Antonius Mulder of Commonwealth
Bank of Australia for finding and reporting this vulnerability.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-dcnm1
Revision History
Version Description Section Status Date
1.0 Initial public release. -- Final 2017-June-07
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
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