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Vulnerability Alert

Cisco Small Business Devices Undocumented Test Interface Unauthorized Access Vulnerability

 
Threat Type:CWE-287: Authentication Issues
IntelliShield ID:32381
Version:1
First Published:2014 January 10 16:10 GMT
Last Published:2014 January 10 16:10 GMT
Port: Not available
CVE:CVE-2014-0659
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:10.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:10.0
 
Version Summary:Multiple Cisco Small Business devices contain an undocumented network interface that could allow unauthorized access. Updates will be available by the end of January 2014.
 
 
Description
A vulnerability in the underlying operating system of the affected devices could allow an unauthenticated, remote attacker unauthorized access to the affected device.

The vulnerability is due to a service listening on TCP port 32764 of the affected device. An unauthenticated, remote attacker could exploit this vulnerability by accessing the affected device from the wireless LAN (WLAN) or the physical LAN interface and issuing arbitrary commands in the underlying operating system. Successful exploitation could allow the attacker to gain access to user credentials for the administrator account of the device or execute commands with elevated privileges.

Cisco has confirmed the vulnerability in a security advisory. Software updates will be available by the end of January 2014.
 
Warning Indicators
The following devices are affected:
  • Cisco RVS4000 4-port Gigabit Security Router firmware version 2.0.3.2 and prior
  • Cisco WRVS4400N Wireless-N Gigabit Security Router firmware version 1.1.13 and 2.0.2.1 and prior
  • Cisco WAP4410N Wireless-N Access Point firmware version 2.0.6.1 and prior
 
IntelliShield Analysis
The exposed interface is available only on the LAN connection interface for the two affected routers, the Cisco RVS4000 4-port Gigabit Security Router and the Cisco WRVS4400N Wireless-N Gigabit Security Router, reducing the potential source of exploitation to internal networks. The interface is accessible from the wireless interface on the Cisco WAP4410N Wireless-N Access Point, making exploitation easier for attackers within wireless communication range.
 
Vendor Announcements
Cisco has released a security advisory for Cisco bug IDs CSCum37566, CSCum43685, CSCum43693, and CSCum43700 at the following link: cisco-sa-20140110-sbd
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to gain unauthorized access to a vulnerable device. The attacker could leverage the access to issue arbitrary commands or access authentication credentials.
 
Technical Information
The vulnerability is due to an undocumented test network interface. The interface allows for remote, unauthenticated access to the device.

An unauthenticated, remote attacker could exploit this vulnerability by connecting directly to the exposed interface via TCP port 32764. The attacker could issue commands within the interface or gain access to user credentials on the device, resulting in a complete device compromise.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
Software updates will be available by the end of January 2014.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco RVS4000 Gigabit Security Router - VPN Firmware 1.3 .0.5, .1.0, .2.0, .3.5 | 2.0 Base, .0.3, .2.7, .3.2
CiscoCisco WRVS4400N Gigabit Security Router 1.1 .03, .13 | 2.0 Base, .0.7, .0.8, .1.3, .2.1
CiscoCisco WAP4410N Wireless-N Access Point Firware 2.0 .2.1, .3.3, .4.2, .5.3, .6.1

Associated Products:
N/A




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LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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