ESB-2017.2649 - [Virtual] Cisco Cloud Services Platform 2100: Unauthorised access - Existing account 2017-10-19

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2649
   Cisco Cloud Services Platform 2100 Unauthorized Access Vulnerability
                              19 October 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Cloud Services Platform 2100
Publisher:         Cisco Systems
Operating System:  Virtualisation
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12251  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-ccs

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Cisco Security Advisory

Cisco Cloud Services Platform 2100 Unauthorized Access Vulnerability

Critical

Advisory ID: cisco-sa-20171018-ccs

First Published: 2017 October 18 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs:

CSCve64690

CVSS Score:

Base 9.9

Base 9.9 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:X

CVE-2017-12251

CWE-264

Summary

A vulnerability in the web console of the Cisco Cloud Services Platform (CSP)
2100 could allow an authenticated, remote attacker to interact maliciously 
with the services or virtual machines (VMs) operating remotely on an affected
CSP device.

The vulnerability is due to weaknesses in the generation of certain 
authentication mechanisms in the URL of the web console. An attacker could 
exploit this vulnerability by browsing to one of the hosted VMs' URLs in Cisco
CSP and viewing specific patterns that control the web application's 
mechanisms for authentication control. An exploit could allow the attacker to
access a specific VM on the CSP, which causes a complete loss of the system's
confidentiality, integrity, and availability.

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-20171018-ccs

Affected Products

Vulnerable Products

This vulnerability affects Cisco Cloud Services Platform (CSP) 2100 running 
software release 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, or 2.2.2.

To determine which software release of Cisco CSP 2100 is running, 
administrators can issue the show version command in user EXEC command mode in
the CLI. The following is an example of the text that the CLI may return:

csp# show version

Cisco Cloud Services Platform Software, 2100 Software (CSP-2100), Version 
2.0.0 Build:6

TAC support: http://www.cisco.com/tac

Copyright (c) 2015 by Cisco Systems, Inc.

Compiled Wednesday 10-February-2016 14:48

csp#

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

This vulnerability is fixed in Cisco Cloud Services Platform Release 2.2.3 or
later. The software can be downloaded from the Software Center on Cisco.com by
navigating to Downloads Home > Products > Switches > Virtual Networking > 
Cloud Services Platform 2100.

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

This vulnerability was reported to Cisco by Chris Day, Senior Security 
Consultant, MWR InfoSecurity.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-ccs

Revision History

Version 	Description 		Section 	Status 		Date

1.0 		Initial public release. 		Final 		2017-October-18

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.

A standalone copy or paraphrase of the text of this document that omits the 
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end 
users of Cisco products.

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