The Cisco Wireless LAN Controller (Cisco WLC) product family is affected by the following four vulnerabilities: Cisco Wireless LAN Controllers Wireless Intrusion Prevention System (wIPS) Denial of Service Vulnerability Cisco Wireless LAN Controllers Session Initiation Protocol Denial of Service Vulnerability Cisco Wireless LAN Controllers HTTP Profiling Remote Code Execution Vulnerability Cisco Wireless LAN Controllers SNMP Unauthorized Access Vulnerability Cisco has released software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130123-wlc
The Cisco Wireless LAN Controller (Cisco WLC) product family is affected by the following four vulnerabilities:
Cisco Wireless LAN Controllers Wireless Intrusion Prevention System (wIPS) Denial of Service Vulnerability
Cisco Wireless LAN Controllers Session Initiation Protocol Denial of Service Vulnerability
Cisco Wireless LAN Controllers HTTP Profiling Remote Code Execution Vulnerability
Cisco Wireless LAN Controllers SNMP Unauthorized Access Vulnerability
Cisco has released software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available.
This advisory is available at the following link:The Cisco WLC product family is affected by multiple vulnerabilities. Affected versions of Cisco WLC Software vary depending on the specific vulnerability.
|
Model |
End of Life Document URL |
|
Cisco 2000 Series WLC |
|
|
Cisco NM-AIR-WLC Modules for ISR |
|
|
Cisco 500 Series Wireless Express Mobility Controllers |
http://www.cisco.com/en/US/prod/collateral/wireless/ps7306/ps7320/ps7339/end_of_life_c51-568040.html |
To determine the Cisco WLC Software version that is running in a given environment, use one of the following methods:
In the web interface, choose the Monitor tab, click Summary in the left pane, and note the Software Version field.(Cisco Controller)> show sysinfo
Manufacturer's Name.. Cisco Systems Inc.
Product Name......... Cisco Controller
Product Version...... 5.1.151.0
RTOS Version......... Linux-2.6.10_mvl401
Bootloader Version... 4.0.207.0
Build Type........... DATA + WPS
The Cisco WLCs and Cisco WiSMs are responsible for system-wide wireless LAN functionality, including security policies, intrusion prevention, RF management, quality of service (QoS), and mobility. These devices communicate with controller-based access points over any Layer 2 (Ethernet) or Layer 3 (IP) infrastructure using the Lightweight Access Point Protocol (LWAPP) and the Control and Provisioning of Wireless Access Points (CAPWAP) protocol.
The Cisco WLC family of devices is affected by the following vulnerabilities:
The Cisco Wireless LAN Controller (WLC) product family is affected by a denial of service (DoS) vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload by sending crafted IP packets to the affected device. This vulnerability affects Cisco WLCs that are configured with Wireless Intrusion Prevention System (wIPS). This vulnerability can be exploited from both wired and wireless segments.
This vulnerability is documented in Cisco bug ID CSCtx80743 (registered customers only) and has been assigned CVE ID CVE-2013-1102.
(WLC)>show wlan 3
WLAN Identifier.................................. 3
The following section contains information about a workaround, if available, for each vulnerability described in this security advisory.
Cisco Wireless LAN Controllers Wireless Intrusion Prevention System (wIPS) Denial of Service Vulnerability
There are no workarounds to mitigate this vulnerability besides disabling wIPS features in the Cisco WLC.
Cisco Wireless LAN Controllers Session Initiation Protocol Denial of Service Vulnerability
There are no workarounds to mitigate this vulnerability.
Cisco Wireless LAN Controllers HTTP Profiling Remote Code Execution Vulnerability
There are no workarounds to mitigate this vulnerability besides disabling the HTTP Profiling feature in the Cisco WLC.
Cisco Wireless LAN Controllers SNMP Unauthorized Access Vulnerability
CPU based Access Control Lists (ACLs) can be configured to restrict SNMP access to the affected WLC. After ACLs are defined, they can be applied to the management interface, the access point manager (AP-manager) interface, or any of the dynamic interfaces for client data traffic or to the Network Processing Unit (NPU) interface for traffic to the controller CPU.
The following table provides software upgrade information to mitigate the vulnerabilities described in this security advisory:
|
Vulnerability/Bug ID |
Affected Release |
First Fixed Release |
| wIPS DoS Vulnerability (CSCtx80743) |
4.2 |
Not vulnerable |
|
4.2M |
Not vulnerable |
|
|
5.0 |
Not vulnerable |
|
|
5.1 |
Not vulnerable |
|
|
5.2 |
Not vulnerable |
|
|
6.0 |
Not vulnerable |
|
|
7.0 |
7.0.235.0 |
|
|
7.1 |
Vulnerable; migrate to 7.2 or later |
|
|
7.2 |
7.2.110.0 |
|
| 7.3 | 7.3.101.0 | |
| 7.4 | Not vulnerable | |
| SIP DoS Vulnerability (CSCts87659) |
4.2 |
Not vulnerable |
|
4.2M |
Not vulnerable |
|
| 5.0 |
Not vulnerable |
|
|
5.1 |
Not vulnerable |
|
|
5.2 |
Not vulnerable |
|
|
6.0 |
Not Vulnerable |
|
|
7.0 |
7.0.220.0 |
|
|
7.1 |
7.1.91.0 |
|
|
7.2 |
7.2.103.0 |
|
| 7.3 | Not Vulnerable |
|
| 7.4 | Not Vulnerable |
|
|
HTTP Profiling Remote Code Execution Vulnerability |
4.2 |
Not Vulnerable |
|
4.2M |
Not Vulnerable |
|
|
5.0 |
Not Vulnerable |
|
|
5.1 |
Not Vulnerable |
|
|
5.2 |
Not Vulnerable |
|
|
6.0 |
Not Vulnerable |
|
|
7.0 |
Not Vulnerable |
|
|
7.1 |
Not Vulnerable |
|
| 7.2 |
Not Vulnerable |
|
| 7.3 | 7.3.112.0 | |
| 7.4 | Not Vulnerable |
|
|
Unauthorized Access Vulnerability (CSCua60653) |
4.2 |
Not Vulnerable |
|
4.2M |
Not Vulnerable |
|
|
5.0 |
Not Vulnerable |
|
|
5.1 |
Not Vulnerable |
|
|
5.2 |
Not Vulnerable |
|
|
6.0 |
Not Vulnerable |
|
|
7.0 |
7.0.235.3 |
|
|
7.1 |
Vulnerable; migrate to 7.2 |
|
| 7.2 |
7.2.111.3 |
|
| 7.3 | 7.3.101.0 | |
| 7.4 | Not Vulnerable |
When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses 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.
|
Affected Release |
Recommended Release |
|
7.0 |
7.0.235.3 |
|
7.1 |
Vulnerable; migrate to 7.2 or later |
|
7.2 |
7.2.111.3 |
| 7.3 | 7.3.112.0 |
| 7.4 | Not vulnerable |
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
The DoS and remote code execution vulnerabilities were found during the troubleshooting of customer service requests. The SNMP unauthorized access vulnerability was found and reported to Cisco by Darren Johnson (CCIE#20078). Cisco PSIRT greatly appreciates the opportunity to work with researchers on security vulnerabilities and welcomes the opportunity to review and assist in product reports.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Revision 1.3 | 2013-January-30 | Updated table in the Software Versions and Fixes section. |
| Revision 1.2 | 2013-January-24 | Updated table in the Software Versions and Fixes section. |
| Revision 1.1 | 2013-January-23 | Updated Details section for the SIP vulnerability. |
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