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Vulnerability Alert

Cisco ASR 5000 Series Gateway GPRS Support Node Traffic Bypass Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:32513
Version:1
First Published:2014 January 22 19:10 GMT
Last Published:2014 January 22 19:10 GMT
Port: Not available
CVE:CVE-2014-0669
BugTraq ID:65052
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Harassment
CVSS Base:5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.9
Related Resources:
View related Security Notice
 
 
Version Summary:Cisco ASR 5000 Series Gateway GPRS Support Node contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions. Updates are available.
 
 
Description
A vulnerability in the Wireless Session Protocol (WSP) function of Cisco ASR 5000 Series Gateway GPRS Support Node (GGSN) could allow an unauthenticated,  remote attacker to browse free of charge instead of being redirected to a Top-Up portal.

The vulnerability is due to incorrect processing of certain WSP packets. An attacker could exploit this vulnerability by sending crafted WSP packets. An exploit could allow the attacker to browse free of charge instead of being redirected to a Top-Up portal.

Cisco has confirmed the vulnerability in a security notice and released software updates.
 
Warning Indicators
At the time this alert was first published, Cisco ASR 5000 Series Software versions 12.1 and prior were vulnerable. Later releases of Cisco ASR 5000 Series Software may also be vulnerable.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker my need access to trusted, internal networks to send crafted WSP packets to a targeted device. This access requirement may reduce the likelihood of a successful exploit.
 
Vendor Announcements
Cisco has released a security notice at the following link: CVE-2014-0669

Customers are advised to consult Cisco bug ID CSCuh28371 for the most complete list of affected product versions.
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to browse free of charge instead of being redirected to a Top-Up portal.
 
Technical Information
The vulnerability is due to incorrect processing of certain WSP packets by the WSP function of Cisco ASR 5000 Series GGSN.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted WSP packets to an affected device. An exploit could allow the attacker to browse free of charge instead of being redirected to a Top-Up portal.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

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
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com for assistance.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco ASR 5000 Series Software 11.0 Base | 12.0 Base | 12.1 Base

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


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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