ESB-2017.2498 - [Cisco] Cisco AnyConnect Network Access Manager (NAM): Unauthorised access - Existing account 2017-10-05

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             AUSCERT External Security Bulletin Redistribution

Cisco AnyConnect Network Access Manager Dual-Homed Interface Vulnerability
                              5 October 2017


        AusCERT Security Bulletin Summary

Product:           Cisco AnyConnect Network Access Manager (NAM)
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12268  

Original Bulletin:

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Cisco AnyConnect Network Access Manager Dual-Homed Interface Vulnerability


Advisory ID:

First Published:
2017 October 4 16:00 GMT

Version 1.0:

No workarounds available Cisco Bug IDs:


CVSS Score:
Base 5.5



A vulnerability in the Network Access Manager (NAM) of Cisco AnyConnect Secure
Mobility Client could allow an authenticated, local attacker to enable 
multiple network adapters.

The vulnerability is due to insufficient NAM policy enforcement. An attacker 
could exploit this vulnerability by manipulating network interfaces of the 
device to allow Multiple active network interfaces. A successful exploit could
allow the attacker to send traffic over a non-authorized network interface.

Cisco has released software updates that address this vulnerability. 
Workarounds that address this vulnerability are not available.

This advisory is available at the following link:

Affected Products

Vulnerable Products

This vulnerability affects Cisco AnyConnect Mobility Client for Windows. For 
information about affected software releases, consult the Cisco bug ID(s) at 
the top of this advisory.

Products Confirmed Not Vulnerable

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


There are no workarounds that address this vulnerability.

Fixed Software

For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.

When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade 

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.


This vulnerability was found during the resolution of a support case.


Revision History

Version Description 		Section 	Status 	Date
1.0 Initial public release. 	-		Final 	2017-October-04

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