ESB-2017.2266 - [Cisco] Cisco products: Multiple vulnerabilities 2017-09-08

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2266
        Multiple Vulnerabilities in Apache Struts 2 Affecting Cisco
                         Products: September 2017
                             8 September 2017

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

Product:           Cisco products
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2017-9805 CVE-2017-9804 CVE-2017-9793

Reference:         ASB-2017.0139

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2

Comment: Cisco advises its products are under investigation. The vulnerable products table will continue to be updated.

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Cisco Security Advisory

Multiple Vulnerabilities in Apache Struts 2 Affecting Cisco Products: 
September 2017

Critical

Advisory ID: cisco-sa-20170907-struts2

First Published: 2017 September 7 21:00 GMT

Version 1.0: Interim

Workarounds: No workarounds available

CVE-2017-9793

CVE-2017-9804

CVE-2017-9805

CWE-20

CWE-399

Summary

On September 5, 2017, the Apache Software Foundation released security 
bulletins that disclose three vulnerabilities in the Apache Struts 2 package.
Of these vulnerabilities, the Apache Software Foundation classifies one as 
Critical Severity, one as Medium Severity, and one as Low Severity. For more 
information about the vulnerabilities, refer to the Details section of this 
advisory.

Multiple Cisco products incorporate a version of the Apache Struts 2 package 
that is affected by these vulnerabilities.

This advisory will be updated as additional information becomes available.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2

Affected Products

Cisco is investigating its product line to determine which products may be 
affected by these vulnerabilities and the impact on each affected product. As
the investigation progresses, Cisco will update this advisory with information
about affected products, including the ID of the Cisco bug for each affected 
product.

For information about whether a product is affected by these vulnerabilities,
refer to the Vulnerable Products and Products Confirmed Not Vulnerable 
sections of this advisory. The Vulnerable Products section includes Cisco bug
IDs for each affected product. The bugs are accessible through the Cisco Bug 
Search Tool and contain additional platform-specific information, including 
any available workarounds and fixed software releases.

If a Cisco product is not listed in the Vulnerable Products or Products 
Confirmed Not Vulnerable section, it is assumed to not be vulnerable.

Products Under Investigation

The following Cisco products are under active investigation to determine 
whether they are affected by the vulnerabilities described in this advisory.

Collaboration and Social Media

Cisco Unified MeetingPlace

Cisco WebEx Meetings Server

Endpoint Clients and Client Software

Cisco Prime Service Catalog

Network Management and Provisioning

Cisco Digital Media Manager

Cisco MXE 3500 Series Media Experience Engines

Cisco Prime Central for Service Providers

Cisco Prime Collaboration Assurance

Cisco Prime Home

Cisco Prime Infrastructure

Cisco Prime LAN Management Solution - Solaris

Cisco Prime Network

Cisco Unified Intelligence Center

Voice and Unified Communications Devices

Cisco Enterprise Chat and Email

Cisco Hosted Collaboration Mediation Fulfillment

Cisco Hosted Collaboration Solution for Contact Center

Cisco Unified Contact Center Enterprise

Cisco Unified E-Mail Interaction Manager

Cisco Unified Intelligent Contact Management Enterprise

Cisco Unified Survivable Remote Site Telephony Manager

Cisco Unified Web Interaction Manager

Cisco Unity Connection

Cisco Unity Express

Cisco Virtualized Voice Browser

Video, Streaming, TelePresence, and Transcoding Devices

Cisco Enterprise Content Delivery System (ECDS)

Cisco Video Distribution Suite for Internet Streaming (VDS-IS)

Cisco Hosted Services

Cisco Cloud Web Security

Cisco Deployment Automation Tool

Cisco Network Device Security Assessment Service

Cisco Network Performance Analysis

Cisco Partner Support Service 1.x

Cisco Services Provisioning Platform

Cisco Smart Net Total Care - Contracts Information System Process Controller

Cisco Smart Net Total Care

Cisco Tidal Performance Analyzer

Cisco Unified Service Delivery Platform

Cisco WebEx Network-Based Recording (NBR) Management

Vulnerable Products

The following table lists Cisco products that are affected by the 
vulnerabilities described in this advisory. If an asterisk (*) appears after a
product name, the product is affected by the critical severity vulnerability,
CVE-2017-9805 (Apache Struts REST plug-in XML processing arbitrary code 
execution vulnerability). At the time of this publication, no Cisco products 
are known to be affected by CVE-2017-9805.

Detailed information about fixed software releases will be documented in the 
Cisco bugs that are listed in this table. The bugs are accessible through the
Cisco Bug Search Tool. When planning a software upgrade, customers should 
review the bugs directly because the bugs will have the most current and 
up-to-date information.

Product 					Cisco Bug ID 		Fixed Release Availability

Voice and Unified Communications Devices

Cisco Emergency Responder 			CSCvf86138

Products Confirmed Not Vulnerable

Cisco has confirmed that the following products are not affected by the 
vulnerabilities described in this advisory.

Network Application, Service, and Acceleration

Cisco Data Center Network Manager

Network and Content Security Devices

Cisco Identity Services Engine (ISE)

Cisco Secure Access Control System (ACS)

Network Management and Provisioning

Cisco Prime Access Registrar

Cisco Prime Collaboration Provisioning

Cisco Prime License Manager

Cisco Prime Network Registrar IP Address Manager (IPAM)

Cisco Security Manager

Cisco Smart Net Total Care - Local Collector appliance

Routing and Switching - Enterprise and Service Provider

Cisco Broadband Access Center for Telco and Wireless

Voice and Unified Communications Devices

Cisco Unified Communications Manager IM & Presence Service (formerly CUPS)

Cisco Unified Communications Manager

Cisco Unified Customer Voice Portal

Cisco Unified SIP Proxy Software

Cisco Hosted Services

Cisco Business Video Services Automation Software

Cisco WebEx Meeting Center - Windows

Details

Apache Struts REST Plug-In XML Processing Arbitrary Code Execution 
Vulnerability

A vulnerability in the Representational State Transfer (REST) plug-in of 
Apache Struts could allow an unauthenticated, remote attacker to execute 
arbitrary code.

The vulnerability is due to the improper deserialization of XML requests by 
the REST plug-in with the XStream handler of the affected software. An 
attacker could exploit this vulnerability by sending crafted XML content to a
targeted system. A successful exploit could allow the attacker to execute 
arbitrary code on the system, which could result in a complete system 
compromise.

This vulnerability has been assigned the following CVE ID: CVE-2017-9805

Apache Struts REST Plug-In Denial of Service Vulnerability

A vulnerability in the REST plug-in for Apache Struts could allow an 
unauthenticated, remote attacker to cause a denial of service (DoS) condition
on a targeted system.

The vulnerability is due to insufficient validation of user-supplied input by
the XStream library in the REST plug-in for the affected application. An 
attacker could submit crafted XML data to the affected system. A successful 
exploit could allow the attacker to cause a DoS condition on the targeted 
system.

This vulnerability has been assigned the following CVE ID: CVE-2017-9793

Apache Struts URLValidator Resource Exhaustion Denial of Service Vulnerability

A vulnerability in the URLValidator feature of Apache Struts could allow an 
unauthenticated, remote attacker to cause a denial of service (DoS) condition
on an affected system.

The vulnerability is due to insufficient validation of user-supplied input 
when the affected software uses the URLValidator feature to validate URLs. An
attacker could exploit this vulnerability by submitting a crafted URL in a 
form field of an application utilizing an affected version of Apache Struts. 
An exploit could trigger a condition in the regular expression (regex) 
processing by the URLValidator that would consume excessive amounts of CPU 
resources, resulting in a DoS condition.

This vulnerability has been assigned the following CVE ID: CVE-2017-9804

Indicators of Compromise

To help detect possible exploitation of this vulnerability, Cisco has released
Snort SID 44315.

Workarounds

Any workarounds that address these vulnerabilities will be documented in the 
Cisco bugs, which are accessible through the Cisco Bug Search Tool.

Fixed Software

Currently, there are no software updates that address the vulnerabilities 
described in this advisory. Updates for affected software releases will be 
published when they are available and information about those updates will be
documented in Cisco bugs, which are accessible through the Cisco Bug Search 
Tool.

When Cisco releases software updates that address these vulnerabilities, 
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/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:

https://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

To determine the affected and fixed releases for each vulnerable product, 
refer to the Cisco bug identified for the product in the Vulnerable Products 
section of this advisory. Cisco bugs are accessible through the Cisco Bug 
Search Tool.

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

On September 5, 2017, the Apache Software Foundation publicly disclosed these
vulnerabilities in the following security bulletins:

CVE-2017-9805: http://struts.apache.org/docs/s2-052.html

CVE-2017-9804: http://struts.apache.org/docs/s2-050.html

CVE-2017-9793: http://struts.apache.org/docs/s2-051.html

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2

Revision History

Version 	Description 			Section 	Status 		Date

1.0 		Initial public release. 			Interim 	2017-September-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. CISCO EXPECTS TO UPDATE THIS 
DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE.

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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