April 2007
Two Cisco Advisories: Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points, and Cisco Wireless Control System
ID: 115
Ref: 057/07
Date: 13 April 2007:15:26:11
Version: 1
Title: Two Cisco Advisories: Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points, and Cisco Wireless Control System
Abstract: 1. Cisco Security Advisory: Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points 2. Cisco Security Advisory: Multiple Vulnerabilities in the Cisco Wireless Control System
Vendors affected: Cisco
Operating systems affected: Cisco
1.
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Cisco Security Advisory: Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points
Advisory ID: cisco-sa-20070412-wlc
http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml
Revision 1.0
For Public Release 2007 April 12 1600 UTC (GMT)
- ---------------------------------------------------------------------
Summary
=======
The Cisco Wireless LAN Controller (WLC) manages Cisco Aironet access points using the Lightweight Access Point Protocol (LWAPP). The WLC contains multiple vulnerabilities that could result in a denial of service (DoS) condition, information disclosure, or access control list changes, or allow an attacker to gain full administrative access.
Cisco has made free software available to address this vulnerability for affected customers. There are workarounds available to mitigate the effects of these vulnerabilities.
This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml.
Affected Products
=================
This section provides details on affected products.
Vulnerable Products
+------------------
This sections describes the vulnerable products.
Vulnerable Software
+------------------
The vulnerabilities addressed in this document affect versions 4.0, 3.2, and prior versions of the Wireless LAN Controller software. To identify the first fixed version for a specific Cisco Bug ID, please see the Software Versions and Fixes section of this advisory.
To determine the version of WLC running in a given environment, use one of the following methods:
* In the web interface, choose the Monitor tab, click Summary in
the left-hand pane, and note the "Software Version."
* From the command-line interface, type show sysinfo and note the
"Product Version."
Vulnerable Hardware
+------------------
Wireless LAN Controllers
* Cisco 4400 Series Wireless LAN Controllers
* Cisco 2100 Series Wireless LAN Controllers
* Cisco Wireless LAN Controller Module
Wireless Integrated Switches and Routers
* Cisco Catalyst 6500 Series Wireless Services Module (WiSM)
* Cisco Catalyst 3750 Series Integrated Wireless LAN Controllers
* Cisco Wireless LAN Controller Module
Cisco Aironet Access Points
* Cisco Aironet 1000 Series
* Cisco Aironet 1500 Series
Products Confirmed Not Vulnerable
+--------------------------------
* Cisco Aironet 1400 Series
* Cisco Aironet 1300 Series
* Cisco Aironet 1240 AG Series
* Cisco Aironet 1230 AG Series
* Cisco Aironet 1200 Series
* Cisco Aironet 1130 AG Series
* Cisco Aironet 1100 Series
No other Cisco products are currently known to be affected by these vulnerabilities.
Details
=======
The Cisco Wireless LAN Controller (WLC) manages Cisco Aironet access points using the Lightweight Access Point Protocol (LWAPP). This protocol provides centralized management of wireless networks. The WLC contains the following vulnerabilities:
Default SNMP Community Strings
+-----------------------------
The WLC uses the commonly known values of "public" and "private" for its read-only and read-write SNMP community strings. This vulnerability is documented by Cisco Bug ID CSCse02384.
Malformed Ethernet Traffic Crash
+-------------------------------
The WLC may crash in response to malformed Ethernet traffic. This vulnerability is documented by Cisco Bug ID CSCsc90179.
Multiple NPU Lock-Up Vulnerabilities
+-----------------------------------
The Network Processing Unit (NPU) is responsible for handling traffic within the WLC. It is possible to cause one or more NPUs to lock up by sending certain types of traffic to an affected WLC. This traffic includes crafted SNAP packets, malformed 802.11 traffic, and packets with unexpected length values in certain headers.
Each NPU operates independently and serves two of the physical ports on the WLC. A lock up in one NPU does not affect the others, so the number of NPUs available and the configuration of the device determine whether these vulnerabilities result in a partial or complete inability to forward traffic. To clear a NPU lock up, the WLC must be restarted. If the lock up condition prevents access to the management interface, the restart must be performed via the console port or service port.
Devices that implement the WLC functionality in software rather than hardware do not contain a NPU and are not affected by these vulnerabilities. These software-based devices are the 2000 Series WLC, the 2100 Series WLC, and the Cisco Wireless LAN Controller Module.
These vulnerabilities are documented by Cisco Bug IDs CSCsg36361 , CSCsg15901, and CSCsh10841.
Hard-Coded Service Password in Lightweight AP
+--------------------------------------------
The Cisco Aironet 1000 Series and 1500 Series Lightweight Access Points contain a hard-coded service password that is used for troubleshooting. This service account is only accessible via a physical connection to the console port, but the password is common to all units in these series. This vulnerability is documented by Cisco Bug ID CSCsg15192.
WLAN ACL Does Not Persist Through Reboot
+---------------------------------------
The WLC contains a bug when processing WLAN ACLs that causes the WLAN ACL configuration to be saved with an invalid checksum. When the configuration is subsequently reloaded at boot time, the checksum fails and the WLAN ACLs are not installed. This vulnerability is documented by Cisco Bug ID CSCse58195.
Vulnerability Scoring Details
=============================
Cisco is providing scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS).
Cisco will provide a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.
Cisco PSIRT will set the bias in all cases to normal. Customers are encouraged to apply the bias parameter when determining the environmental impact of a particular vulnerability.
CVSS is a standards based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.
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.
CSCsc90179 - WLC - Default SNMP Community Strings
+--------------------------------------------------
CVSS Base Score: 10
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 8.3
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsc90179 - WLC - Malformed Ethernet Traffic Crash
+--------------------------------------------------
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg36361 - WLC - NPU Lock-Up Vulnerability
+-------------------------------------------
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg15901 - WLC - NPU Lock-Up Vulnerability
+-------------------------------------------
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsh10841 - WLC - NPU Lock-Up Vulnerability
+-------------------------------------------
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg15192 - Hard-Coded Service Password in Lightweight AP
+---------------------------------------------------------
CVSS Base Score: 5.6
Access Vector: Local
Access Complexity: High
Authentication: Not Required
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 4.6
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCse58195 - WLC - WLAN ACL Does Not Persist Through Reboot
+----------------------------------------------------------
CVSS Base Score: 3.7
Access Vector: Remote
Access Complexity: High
Authentication: Not Required
Confidentiality Impact: Partial
Integrity Impact: Partial
Availability Impact: None
Impact Bias: Normal
CVSS Temporal Score: 3.1
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
Impact
======
Successful exploitation of these vulnerabilities may result in the issues described in this section.
Default SNMP Community Strings
+-----------------------------
CSCse02384: This vulnerability allows authenticated, remote attackers to utilize common credentials to read and modify the configuration of the WLC via SNMP.
Malformed Ethernet Traffic Crash
+-------------------------------
CSCsc90179: This vulnerability may allow unauthenticated attackers on a local network segment to crash the WLC, resulting in a DoS condition.
Multiple NPU Lock-Up Vulnerabilities
+-----------------------------------
CSCsg36361: This vulnerability allows unauthenticated attackers on a local wireless network segment to prevent the WLC from passing traffic, resulting in either a partial or complete DoS condition.
CSCsg15901: This vulnerability allows unauthenticated attackers on a local wireless network segment to prevent the WLC from passing traffic, resulting in either a partial or complete DoS condition.
CSCsh10841: This vulnerability allows unauthenticated attackers on a local wireless network segment to prevent the WLC from passing traffic, resulting in either a partial or complete DoS condition.
Hard-Coded Service Password in Lightweight AP
+--------------------------------------------
CSCsg15192: This vulnerability allows an attacker with physical access to take control of an affected lightweight access point.
WLAN ACL Does Not Persist Through Reboot
+---------------------------------------
CSCse58195: This vulnerability causes the WLAN ACL configuration to be disregarded, resulting in a silent and unexpected change to the security posture of a wireless network.
Software Versions and Fixes
===========================
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.
Each row of the software table (below) describes the earliest software version that contains the fix (the "First Fixed Release") and the anticipated date of availability when fixes are not available. A device running a version that is earlier than the First Fixed Release is known to be vulnerable. The release should be upgraded at least to the indicated version (greater than or equal to the First Fixed Release label).
+---------------------------------------+
| Cisco Bug | First Fixed Releases |
| ID | |
|------------+--------------------------|
| CSCse02384 | Fix available on April |
| | 19, 2007. |
|------------+--------------------------|
| CSCsc90179 | 3.2.116.21, 4.0.155.0 |
|------------+--------------------------|
| | 3.2.193.5, 4.0.206.0, |
| CSCsg36361 | 4.1.x.x (release |
| | pending) |
|------------+--------------------------|
| | 3.2.171.5, 4.0.206.0, |
| CSCsg15901 | 4.1.x.x (release |
| | pending) |
|------------+--------------------------|
| | 3.2.171.5, 4.0.206.0, |
| CSCsh10841 | 4.1.x.x (release |
| | pending) |
|------------+--------------------------|
| CSCsg15192 | 3.2.185.0, 4.0.206.0 |
|------------+--------------------------|
| CSCse58195 | 4.0.206.0 |
+---------------------------------------+
Workarounds
===========
This section describes workarounds for these vulnerabilities.
Default SNMP Community Strings
+-----------------------------
Customers can mitigate this vulnerability by changing the SNMP community strings from their default values. This can be accomplished on each WLC by using the menu to access Management > SNMP > Communities and then changing the values of the community strings. On larger networks, the Cisco Wireless Control System can be used to apply SNMP changes across multiple controllers simultaneously.
Malformed Ethernet Traffic Crash
+-------------------------------
There are no known workarounds for this vulnerability.
Multiple NPU Lock-Up Vulnerabilities
+-----------------------------------
There are no known workarounds for these vulnerabilities.
Hard-Coded Service Password in Lightweight AP
+--------------------------------------------
There are no known workarounds for this vulnerability.
WLAN ACL Does Not Persist Through Reboot
+---------------------------------------
There are no known workarounds for this vulnerability.
Additional Workarounds
+---------------------
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://www.cisco.com/warp/public/707/cisco-air-20070412-wlc.shtml
Obtaining Fixed Software
========================
Cisco has made free software available to address this vulnerability for affected customers. 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/public/sw-license-agreement.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt@cisco.com" or "security-alert@cisco.com"
for software upgrades.
Customers with Service Contracts
+-------------------------------
Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades 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 agreement 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 who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their 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
Have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
for additional TAC contact information, including special 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 vulnerabilities described in this advisory.
These vulnerabilities were discovered via internal testing and during the investigation of customer 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's worldwide website at http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml.
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-teams@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 | | Initial |
| 1.0 | 2007-April-12 | 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/en/US/products/products_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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2.
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Cisco Security Advisory: Multiple Vulnerabilities in the Cisco Wireless Control System
Advisory ID: cisco-sa-20070412-wcs
http://www.cisco.com/warp/public/707/cisco-sa-20070412-wcs.shtml
Revision 1.0
For Public Release 2007 April 12 1600 UTC (GMT)
- ---------------------------------------------------------------------
Summary
=======
The Cisco Wireless Control System (WCS) works in conjunction with Cisco Aironet Lightweight Access Points, Cisco Wireless LAN Controllers, and the Cisco Wireless Location Appliance by providing tools for wireless LAN planning and design, system configuration, location tracking, security monitoring, and wireless LAN management.
Cisco WCS contains multiple vulnerabilities that can result in information disclosure, privilege escalation, and unauthorized access through fixed authentication credentials.
Cisco has released free software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available.
This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20070412-wcs.shtml.
Affected Products
=================
This section provides details on affected products.
Vulnerable Products
+------------------
Versions of WCS prior to 4.0.96.0 are affected by one or more of these vulnerabilities. To identify the first fixed version for a specific Cisco Bug ID, please see the Software Versions and Fixes section of this advisory.
To determine the version of WCS running in a given environment, take the following steps:
1. Log in to the WCS graphical web interface.
2. From the menu, select Help > About the Software.
Products Confirmed Not Vulnerable
+--------------------------------
No other Cisco products are currently known to be affected by these vulnerabilities.
Details
=======
The Cisco Wireless Control System (WCS) works in conjunction with Cisco Aironet Lightweight Access Points, Cisco Wireless LAN Controllers, and the Cisco Wireless Location Appliance by providing tools for wireless LAN planning and design, system configuration, location tracking, security monitoring, and wireless LAN management.
Cisco WCS contains the following vulnerabilities:
Fixed FTP Credentials For WCS Location Backup
+--------------------------------------------
WCS can be configured to back up the data stored on the Cisco Wireless Location Appliance via FTP. Affected versions of WCS include a fixed user name and password for this backup operation; these credentials cannot be changed or disabled. Knowledge of these credentials, when combined with other properties of the FTP server, could allow an attacker to read from and write to arbitrary files on the server hosting the WCS application. In some cases, this could be leveraged to alter system files and compromise the server. This vulnerability is documented by Cisco Bug ID CSCse93014.
Account Group Privilege Escalation
+---------------------------------
The WCS authentication system contains a privilege escalation vulnerability that allows any user with a valid user name and password to change their account group membership. For example, a user in the "LobbyAmbassador" group can add themselves to the "SuperUsers" group. This privilege escalation can allow full administrative control of WCS and the wireless networks it manages.
This vulnerability is documented by Cisco Bug IDs CSCse78596 and CSCsg05190.
Information Disclosure to Unauthenticated Users
+----------------------------------------------
On affected versions of WCS, several directories within the WCS page hierarchy are not password protected and could be accessed by an unauthenticated user. Although the information available would not allow an attacker to gain access to WCS, it would be possible to obtain information about the organization of the network, including access point locations. This vulnerability is documented by Cisco Bug ID CSCsg04301.
Vulnerability Scoring Details
=============================
Cisco is providing scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS).
Cisco will provide a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.
Cisco PSIRT will set the bias in all cases to normal. Customers are encouraged to apply the bias parameter when determining the environmental impact of a particular vulnerability.
CVSS is a standards based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.
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.
CSCse93014 - Fixed FTP Credentials For WCS Location Backup
+---------------------------------------------------------
CVSS Base Score: 10
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 8.3
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCse78596 - WCS Users can browse to unauthorized configuration pages
+--------------------------------------------------------------------
CVSS Base Score: 2.8
Access Vector: Remote
Access Complexity: Low
Authentication: Required
Confidentiality Impact: Partial
Integrity Impact: Partial
Availability Impact: None
Impact Bias: Normal
CVSS Temporal Score: 2.3
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg05190 - WCS Account Group Privilege Escalation
+--------------------------------------------------
CVSS Base Score: 6
Access Vector: Remote
Access Complexity: Low
Authentication: Required
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 5
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg04301 - WCS - Information Disclosure to Unauthenticated Users
+-----------------------------------------------------------------
CVSS Base Score: 2.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: Partial
Integrity Impact: None
Availability Impact: None
Impact Bias: Normal
CVSS Temporal Score: 1.9
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
Impact
======
Successful exploitation of these vulnerabilities may result in the issues described in this section.
Fixed FTP Credentials for WCS Location Backup
+--------------------------------------------
CSCse93014: This vulnerability allows an authenticated attacker to utilize fixed credentials to read from and write to arbitrary files on the server hosting the WCS application. In some cases, the attacker could leverage this ability to gain privileged access to the host.
Account Group Privilege Escalation
+---------------------------------
CSCse78596: This vulnerability allows an authenticated attacker with a valid user account to access information from any WCS configuration page.
CSCsg05190: This vulnerability allows an authenticated attacker with a valid user account to escalate their privileges to the SuperUsers group.
Information Disclosure to Unauthenticated Users
+----------------------------------------------
CSCsg04301: This vulnerability allows an unauthenticated attacker to obtain reconnaissance information from an affected system.
Software Versions and Fixes
===========================
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.
Each row of the software table (below) describes the earliest software version that contains the fix (the "First Fixed Release") and the anticipated date of availability when fixes are not available. A device running a version that is earlier than the First Fixed Release is known to be vulnerable. The release should be upgraded at least to the indicated version (greater than or equal to the First Fixed Release label).
Note: Customers who currently run Cisco WCS 3.x are strongly encouraged to obtain a PAK certificate before they begin the upgrade process. For more information, please read the information under Special Note for Customers Upgrading to Cisco WCS Release 4.0.
+---------------------------------------+
| Cisco Bug ID | First Fixed Release |
|---------------+-----------------------|
| CSCse93014 | 4.0.96.0 |
|---------------+-----------------------|
| CSCse78596 | 4.0.81.0 |
|---------------+-----------------------|
| CSCsg05190 | 4.0.87.0 |
|---------------+-----------------------|
| CSCsg04301 | 4.0.66.0 |
+---------------------------------------+
Special Note for Customers Upgrading to Cisco WCS Release 4.0
+------------------------------------------------------------
To request a PAK certificate to upgrade customers or partners from a previous release of Cisco WCS to Release 4.0, contact the wcs-customer-license@cisco.com. Cisco will attempt to respond to requests to this alias within 48 hours Monday-Friday 9AM-5PM Pacific.
Note: This alias is only for issuing PAK certificates for Cisco WCS license upgrades. It is not for requesting TAC support, troubleshooting, ordering issues, or customer service issues.
Please include in the email to request the PAK certificate:
* Customer name
* Customer email
* Company name
* Exact Cisco WCS SKUs to be upgraded
* Quantity of each Cisco WCS SKU
* Cisco sales order number
* Service contract number (SAU/SASU)
For Technical Support Related to Licensing-Contact Cisco TAC at (800)
553-2447 tac@cisco.com.
For Licensing Order Related Issues-Contact Cisco customer service at http://www.cisco.com/go/customerservice.
Workarounds
===========
This section describes workarounds for these vulnerabilities.
Fixed FTP Credentials for WCS Location Backup
+--------------------------------------------
There are no known workarounds for this vulnerability.
Account Group Privilege Escalation
+---------------------------------
As a workaround, customers can remove the accounts of users who access Cisco WCS from high-risk locations such as publicly accessible building lobbies.
Information Disclosure to Unauthenticated Users
+----------------------------------------------
There are no known workarounds for this vulnerability.
Additional Workarounds
+---------------------
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://www.cisco.com/warp/public/707/cisco-air-20070412-wcs.shtml
Obtaining Fixed Software
========================
Cisco has made free software available to address this vulnerability for affected customers. 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/public/sw-license-agreement.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt@cisco.com" or "security-alert@cisco.com"
for software upgrades.
Customers with Service Contracts
+-------------------------------
Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades 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 agreement 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 who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their 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
Have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
for additional TAC contact information, including special 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 vulnerabilities described in this advisory.
These vulnerabilities were discovered via internal testing and during the investigation of customer 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
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This advisory is posted on Cisco's worldwide website at http://www.cisco.com/warp/public/707/cisco-sa-20070412-wcs.shtml.
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-teams@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
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+---------------------------------------+
| Revision | | Initial |
| 1.0 | 2007-April-12 | 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/en/US/products/products_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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CPNI values your feedback.
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Thank you for your contribution.
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CPNI wishes to acknowledge the contributions of Cisco for the information contained in this advisory.
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