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AUSCERT External Security Bulletin Redistribution
ESB-2016.2071
Multiple vulnerabilities have been identified in Cisco
Wireless LAN Controller
1 September 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Wireless LAN Controller
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-6376 CVE-2016-6375
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-1
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-2
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Cisco Wireless LAN Controller TSM SNMP Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20160831-wlc-1
First Published:
2016 August 31 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCuz40221
CVSS Score:
Base 5.7, Temporal 4.7
CVE-2016-6375
CWE-399
Summary
A vulnerability in the traffic stream metrics (TSM) implemented with the
Inter-Access Point Protocol (IAPP) of the Cisco Wireless LAN Controller (WLC)
could allow an unauthenticated, adjacent attacker to cause a denial of service
(DoS) condition because the process on the WLC unexpectedly restarts. The DoS
condition could occur when a subsequent Simple Network Management Protocol
(SNMP) request is received for TSM information.
The occurs when an SNMP request for TSM information is received. An attacker
could exploit this vulnerability by sending crafted IAPP packets followed by
an SNMP request for TSM information to the targeted device. An exploit could
allow the attacker to cause a DoS condition when the WLC unexpectedly
restarts.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-1
Affected Products
Vulnerable Products
All versions of Cisco Wireless LAN Controller prior to the first fixed
versions of 8.0.140, 8.2.121.0, and 8.3.102.0 are vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco provides information about fixed software in Cisco bugs, which are
accessible through the Cisco Bug Search Tool.
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.
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-1
Revision History
Version Description Section Status Date
1.0 Initial public release. - Final 2016-August-31
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.
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.
- ---
Cisco Wireless LAN Controller wIPS Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20160831-wlc-2
First Published:
2016 August 31 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCuz40263
CVSS Score:
Base 6.1, Temporal 5.0
CVE-2016-6376
CWE-399
Summary
A vulnerability in the Cisco Adaptive Wireless Intrusion Prevention System
(wIPS) implementation in the Cisco Wireless LAN Controller (WLC) could allow
an unauthenticated, adjacent attacker to cause a denial of service (DoS)
condition because the wIPS process on the WLC unexpectedly restarts.
The vulnerability is due to lack of proper input validation of wIPS protocol
packets. An attacker could exploit this vulnerability by sending a malformed
wIPS packet to the affected device. An exploit could allow the attacker to
cause a DoS condition when the wIPS process on the WLC unexpectedly restarts.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-2
Affected Products
Vulnerable Products
All versions of Cisco Wireless LAN Controller prior to the first fixed
versions of 8.0.140.0, 8.2.121.0, and 8.3.102.0 are vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco provides information about fixed software in Cisco bugs, which are
accessible through the Cisco Bug Search Tool.
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.
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-2
Revision History
Version Description Section Status Date
1.0 Initial public release. - Final 2016-August-31
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.
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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