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Cisco Security Advisory

CiscoWorks Common Services Arbitrary Code Execution Vulnerability

Advisory ID: cisco-sa-20101027-cs

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20101027-cs

Revision 1.3

For Public Release 2010 October 27 16:00  UTC (GMT)

Related Resources:

View related IPS SignatureView related Applied Mitigation BulletinView related Alert

Summary

CiscoWorks Common Services for both Oracle Solaris and Microsoft Windows contains a vulnerability that could allow a remote unauthenticated attacker to execute arbitrary code on a host device with privileges of a system administrator.

Cisco has released free software updates that address this vulnerability.

There are no workarounds that mitigate this vulnerability. Mitigations that limit the attack surface of this vulnerability are available.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20101027-cs.

Affected Products

Vulnerable Products

CiscoWorks Common Services versions 3.0.5 and later are affected by this vulnerability. Versions 4.0 and later contain the fix.

Administrators can check version details and licensing information about CiscoWorks Common Services by clicking the About button located in the top right corner of the CiscoWorks home page.

The following CiscoWorks products with the default Common Services installed are affected by this vulnerability, due to their underlying Common Services version:

Product

Product Version

Common Services Version

Cisco Unified Operations Manager

2.0.1

3.0.5

Cisco Unified Operations Manager

2.0.2

3.0.5

Cisco Unified Operations Manager

2.0.3

3.0.5

Cisco Unified Service Monitor

2.0.1

3.0.5

CiscoWorks QoS Policy Manager

4.0, 4.0.1, and 4.0.2

3.0.5

CiscoWorks LAN Management Solution

2.6 Update

3.0.5

CiscoWorks LAN Management Solution

3.0

3.1

CiscoWorks LAN Management Solution

3.0 (December 2007 Update)

3.1.1

CiscoWorks LAN Management Solution

3.1

3.2

CiscoWorks LAN Management Solution

3.2

3.3.0

Cisco Security Manager

3.0.2

3.0.5

Cisco Security Manager

3.1 and 3.1.1

3.0.5

Cisco Security Manager

3.2

3.1

Cisco Security Manager

3.2.2

3.2.0

Cisco Security Manager

3.3

3.2.0

Cisco Security Manager

3.3.1

3.2.0

Cisco Security Manager

4.0

3.3.0

Cisco Security Manager

4.0.1

3.3.0

Cisco TelePresence Readiness Assessment Manager

1.0

3.0.5

Note: CiscoWorks products could be vulnerable if their underlying Common Services versions were upgraded to a vulnerable version.

Products Confirmed Not Vulnerable

Products that use CiscoWorks Common Services version prior to 3.0.5 are not vulnerable. Products that use CiscoWorks Common Services versions 4.0 or later are not vulnerable.

The following CiscoWorks products with the default Common Services installed are not affected by this vulnerability, due to their underlying Common Services version:

Product

Product Version

Common Services Version

CiscoWorks IP Communications Operations Manager

1.0

3.0 SP1

CiscoWorks IP Communications Service Monitor

1.0

3.0 SP1

Cisco Unified Operations Manager

1.1

3.0.3

Cisco Unified Operations Manager

2.0

3.0.3

Cisco Unified Service Monitor

1.1

3.0.3

Cisco Unified Service Monitor

2.0

3.0.4

CiscoWorks LAN Management Solution

2.5, 2.5.1, 2.6

3.0.3

CiscoWorks LAN Management Solution

4.0

4.0

Cisco Security Manager

3.0

3.0.3

Cisco Security Manager

3.0.1

3.0.4

No other Cisco products are currently known to be affected by this vulnerability.

Details

CiscoWorks Common Services is a set of management services that are shared by network management applications in a CiscoWorks solution set.

CiscoWorks Common Services provides the foundation for CiscoWorks applications to share a common model for data storage, login, user role definitions, access privileges, security protocols, and navigation. It creates a standard user experience for all management functions. It also provides the common framework for all basic system level operations such as installation, data management (including backup-restoration and importing-exporting), event and message handling, job and process management, and software updates.

Exploitable buffer overflows exist in the Cisco developed authentication code in the web server module of CiscoWorks Common Services, which can be exploited remotely without authentication.

A successful exploit could cause the web server to crash or allow the attacker to execute arbitrary code on the server. Any code would execute with system administrative privileges.

The vulnerability could be exploited over TCP port 443 or 1741.

Note: The default HTTP and HTTPS ports can be reconfigured on the server.

The vulnerability affects both CiscoWorks Common Services for Oracle Solaris and Microsoft Windows.

This vulnerability is documented in Cisco bug ID CSCti41352 ( registered customers only) .

This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2010-3036.

Vulnerability Scoring Details

Cisco has provided scores for the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Cisco Security Advisory is done in accordance with CVSS version 2.0.

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

Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.

Cisco has provided an FAQ to answer additional questions regarding CVSS at

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

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

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

CSCti41352 ( registered customers only) : CiscoWorks Common Services Arbitrary Code Execution Vulnerability

Calculate the environmental score of CSCti41352

CVSS Base Score - 10

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 this vulnerability could allow a remote unauthenticated attacker to execute arbitrary code on the CiscoWorks server machine with the privileges of the system administrator.

Software Versions and Fixes

Cisco has released free software updates that address this vulnerability. Prior to deploying software updates, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.

This vulnerability has been resolved in CiscoWorks Common Services version 4.0.

The following software patches are available for versions prior to CiscoWorks Common Services 4.0:

CiscoWorks Common Services 3.3

  • cwcs33-sol-CSCti41352.tar - for Oracle Solaris versions
  • cwcs33-win-CSCti41352.zip - for Microsoft Windows versions

CiscoWorks Common Services 3.2.x

  • cwcs32-sol-CSCti41352-K9.tar - for Oracle Solaris versions
  • cwcs32-win-CSCti41352-K9.zip - for Microsoft Windows versions

CiscoWorks Common Services 3.1.x

  • cwcs31-sol-CSCti41352-K9.tar - for Oracle Solaris versions
  • cwcs31-win-CSCti41352-K9.zip - for Microsoft Windows versions

CiscoWorks Common Services 3.0.6

  • cwcs306-sol-CSCti41352-K9.tar - for Oracle Solaris versions
  • cwcs306-win-CSCti41352-K9.zip - for Microsoft Windows versions

These CiscoWorks Common Services patches can be downloaded from http://www.cisco.com/cisco/software/navigator.html?mdfid=268439477&i=rp. Navigate through the tree to "Routing and Switching Management > CiscoWorks LAN Management Solution Products > CiscoWorks Common Services Software > CiscoWorks Common Services Software <appropriate version>." Choose Solaris or Windows, depending on your operating system.

When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.

In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.


Workarounds

Filters such as transit access control lists (tACLs) can be used to allow access to the Administration Workstation only from trusted hosts. This mitigation limits the attack surface of the vulnerability.

Filters that deny HTTPS packets using TCP port 443 and TCP port 1741 should be deployed throughout the network as part of a tACL policy to protect the network from traffic that enters at ingress access points. This policy should be configured to protect the network device where the filter is applied and other devices that are behind it. Filters for HTTPS packets that use TCP port 443 and TCP port 1741 should also be deployed in front of vulnerable network devices so that only traffic from a trusted client is allowed.

Note: Additional information about tACLs is available in "Transit Access Control Lists: Filtering at Your Edge" at the following link: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801afc76.shtml

Additional mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this Advisory: http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20101027-cs.

Obtaining Fixed Software

Cisco has released free software updates that address this vulnerability. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.

Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html , or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml .

Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades.

Customers with Service Contracts

Customers with contracts should obtain updated patches through their regular update channels. For most customers, this means that patches should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com.

Customers Using Third-Party Support Organizations

Customers whose Cisco products 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 support organization for guidance and assistance with the appropriate course of action in regards to this advisory.

The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed.

Customers Without Service Contracts

Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows.

  • +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 with contracts should obtain updated patches through their regular update channels. For most customers, this means that patches should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com.

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

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.

This vulnerability was discovered while handling customer support calls.

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's worldwide website at :

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20101027-cs

In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients.

  • 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
  • full-disclosure@lists.grok.org.uk
  • comp.dcom.sys.cisco@newsgate.cisco.com

Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates.


Revision History

Revision 1.3

2010-December-01

Added new patch information.

Revision 1.2

2010-November-05

Updated Vulnerable Products Table.

Revision 1.1

2010-October-29

Updated Obtaining Fixed Software (Customers with/Customers without) section; updated Software Version and Fixes section.

Revision 1.0

2010-October-27

Initial public release.

Cisco Security Procedures

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


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