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Apache Struts 2 Command Execution Vulnerability in Multiple Cisco Products

Advisory ID: cisco-sa-20140709-struts2

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140709-struts2

Revision 1.1

Last Updated  2014 August 27 19:31  UTC (GMT)

For Public Release 2014 July 9 16:00  UTC (GMT)


Summary

Multiple Cisco products include an implementation of the Apache Struts 2 component that is affected by a remote command execution vulnerability identified by Apache with Common Vulnerabilities and Exposures ID CVE-2010-1870.

The vulnerability is due to insufficient sanitization on user-supplied input in the XWorks component of the affected software. The component uses the ParameterInterceptors directive to parse the Object-Graph Navigation Language (OGNL) expressions that are implemented via a whitelist feature. An attacker could exploit this vulnerability by sending crafted requests that contain OGNL expressions to an affected system. An exploit could allow the attacker to execute arbitrary code on the targeted system.

Cisco has released free software updates that address this vulnerability for all the affected products except Cisco Business Edition 3000 Series. Customers using Cisco Business Edition 3000 Series should contact their Cisco representative for available options.

Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140709-struts2

Affected Products

Vulnerable Products

The following Cisco products are affected by this vulnerability:
  • Cisco Business Edition 3000 Series
  • Cisco Identity Services Engine (ISE)
  • Cisco Media Experience Engine (MXE) 3500 Series
  • Cisco Unified Contact Center Enterprise (Cisco Unified CCE)

Products Confirmed Not Vulnerable

The following Cisco products have been analyzed and are not affected by this vulnerability:
  •     Cisco Adaptive Security Appliance (ASA) Software
  •     Cisco Business Edition 5000 Series and Cisco Business Edition 6000 Series
  •     Cisco Cloud Web Security (CWS)
  •     Cisco Conductor
  •     Cisco Configuration Assurance Solution (CAS)
  •     Cisco Prime Data Center Network Manager (DCNM)
  •     Cisco DVR
  •     Cisco Emergency Responder
  •     Cisco Firewall Service Module (FWSM) Software
  •     Cisco Hosted Collaboration Mediation Fulfillment (HCM-F)
  •     Cisco Media Experience Engine (MXE) 3000 Series and Cisco MXE 5600 Series
  •     Cisco Prime Central for Hosted Collaboration Solution (HCS) Assurance
  •     Cisco Prime Infrastructure
  •     Cisco Prime LAN Management Solution (LMS)
  •     Cisco Prime Network Control System (NCS)
  •     Cisco Secure Access Control Server (ACS)
  •     Cisco TelePresence Manager, Cisco TelePresence Recording Server, and Cisco TelePresence Multipoint Switch
  •     Cisco Unified Attendant Console
  •     Cisco Unified Communications Domain Manager (Cisco Unified CDM)
  •     Cisco Unified Communications Manager (Cisco Unified CM)
  •     Cisco Unified Communications Manager IM and Presence Service and Cisco Unified Presence
  •     Cisco Unified MeetingPlace
  •     Cisco Prime Unified Operation Manager (UOM)
  •     Cisco Prime Unified Services Monitor (USM)
  •     Cisco Unified SIP Proxy (USP)
  •     Cisco Unified Survivable Remote Site Telephony (SRST) Manager
  •     Cisco Unified Survivable Remote Site Voicemail (SRSV)
  •     Cisco Unity Connection
  •     Cisco Videoscape Control Suite Foundation (VCS-Foundation)
  •     Cisco Web Security Appliance (WSA), Cisco Email Security Appliance (ESA), and Cisco Content Security Management Appliance (SMA)
  •     Cisco WebEx
  •     Cisco WebEx Recording Format (WRF) and Cisco WebEx Network-Based Recorder (NBR) Player
  •     Cisco Wireless Control System (WCS)
  •     CiscoWorks Common Services (CS)

No other Cisco products are affected by this vulnerability.

Details

Apache Struts 2 contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions and execute arbitrary commands on a targeted system.

The vulnerability is due to insufficient sanitization on user-supplied input by the affected software. An unauthenticated, remote attacker could exploit the vulnerability by sending crafted requests that contain OGNL expressions to bypass security restrictions and execute arbitrary commands on server-side objects.

This vulnerability has been confirmed to allow remote code execution with Administrator privileges for Cisco Unified CCE. Exploitation on Cisco ISE, Cisco MXE 3500, and Cisco Business Edition 3000 Series is theoretically possible but could not be reproduced. Cisco recommends that customers affected by this vulnerability upgrade to a fixed software release version.

This vulnerability is documented in Cisco bug IDs CSCun31197 (registered customers only) for Cisco Business Edition 3000 Series, CSCun31314 (registered customers only) for Cisco ISE, CSCun31301 (registered customers only) for Cisco MXE 3500, and CSCun25241 (registered customers only) for Cisco Unified CCE.

This vulnerability has been assigned the Common Vulnerabilities and Exposures (CVE) ID CVE-2010-1870.

Vulnerability Scoring Details

Cisco has scored the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0.

CVSS is a standards-based scoring method that conveys vulnerability severity and helps organizations determine the urgency and priority of a response.

Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks.

Cisco has provided additional information regarding CVSS at the following link:

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html

Cisco has also provided a CVSS calculator to compute the environmental impact for individual networks at the following link:

http://intellishield.cisco.com/security/alertmanager/cvss



CSCun31197 - Cisco BE 3000 Apache Struts 2 Command Execution Vulnerability

Calculate the environmental score of CSCun31197

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 7.6

Exploitability

Remediation Level

Report Confidence

Unproven

Unavailable

Unconfirmed




CSCun31314 - Cisco ISE Apache Struts 2 Command Execution Vulnerability

Calculate the environmental score of CSCun31314

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 6.7

Exploitability

Remediation Level

Report Confidence

Unproven

Official-Fix

Unconfirmed




CSCun31301 - Cisco MXE 3500 Apache Struts 2 Command Execution Vulnerability

Calculate the environmental score of CSCun31301

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 6.7

Exploitability

Remediation Level

Report Confidence

Unproven

Official-Fix

Unconfirmed




CSCun25241 - Cisco UCCE Apache Struts 2 Command Execution Vulnerability

Calculate the environmental score of CSCun25241

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed


Impact

Successful exploitation of the vulnerability may cause remote code execution on the affected system.

This vulnerability has been confirmed to allow remote code execution with the privileges of the Administrator user for Cisco Unified CCE. Exploitation on Cisco ISE, Cisco MXE 3500, and Cisco Business Edition 3000 Series is theoretically possible but could not be reproduced. Cisco recommends that customers affected by this vulnerability upgrade to a fixed software release version.

Software Versions and Fixes

When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories 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.

The following table provides the first fixed release for each affected product:

 Product First Fixed Release
Cisco Business Edition 3000 Series   Not available. Please contact Cisco TAC or your Cisco representative for available options.
Cisco Identity Services Engine (ISE)  1.0.4.573-6, 1.1.0.665-4, 1.1.1.268-6, 1.1.2.145-9, 1.1.3.124-4, 1.1.4.218-4, and 1.2.0.899
Cisco Media Experience Engine (MXE) 3500 Series  3.3.2 and apply StrutsPatch.zip
Cisco Unified CCE
 10.5(1), 8.5(4)ES37, 9.0(4)ES39, 9.0(3)ES13

Note: The Engineering Special patch releases for Cisco Unified CCE are available at the following links:

8.5(4): http://www.cisco.com/cisco/software/special/release.html?config=2c8f679b8cdc4fed65e866e30fced34c
9.0(4): http://software.cisco.com/download/special/release.html?config=b40f7ffb0a876e5dae4e202df4b6547b
9.0(3): http://software.cisco.com/download/special/release.html?config=593487b10e77653c20560c54efa6e7a0

Workarounds

There are no workarounds that mitigate this vulnerability.

Obtaining Fixed Software

Cisco has released free software updates that address the vulnerability described in this advisory. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.

Customers may only install and expect support for feature sets they have purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html.

Customers with Service Contracts

Customers with contracts should obtain upgraded software through their regular update channels. For most customers, upgrades should be obtained through the Software Navigator on Cisco.com at http://www.cisco.com/cisco/software/navigator.html.

Customers using Third Party Support Organizations

Customers with Cisco products that are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers, should contact that organization for assistance with the appropriate course of action.

The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.

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 Technical Assistance Center (TAC):

  • +1 800 553 2447 (toll free from within North America)
  • +1 408 526 7209 (toll call from anywhere in the world)
  • e-mail: tac@cisco.com

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. Customers without service contracts should request free upgrades through the TAC.

Refer to Cisco Worldwide Contacts at http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, instructions, and e-mail addresses for support in various languages.

Exploitation and Public Announcements

Apache has confirmed this vulnerability at http://struts.apache.org/release/2.2.x/docs/s2-005.html

Functional code that demonstrates an exploit of this vulnerability is publicly available.

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 on any of the affected Cisco products.

This vulnerability was found during the resolution of support cases.

Status of this Notice: Final

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 stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.


Distribution

This advisory is posted on Cisco Security Intelligence Operations at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140709-struts2

Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses:

  • cust-security-announce@cisco.com
  • first-bulletins@lists.first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • fulldisclosure@seclists.org

Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates.


Revision History

Revision 1.1 2014-August-27 Added additional information about fixed releases for Cisco Unified CCE.
Revision 1.0 2014-July-09 Initial public release.

Cisco Security Procedures

Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco is available on Cisco.com at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html. This web page includes instructions for press inquiries regarding Cisco Security Advisories. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt.