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Vulnerability Alert

Cisco Nexus 7000 M1-Series Modules Crafted Packet Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:28116
Version:1
First Published:2013 February 06 19:51 GMT
Last Published:2013 February 06 19:51 GMT
Port: Not available
CVE:CVE-2013-1122
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:4.5
Related Resources:
View related Security Notice
 
 
Version Summary:Cisco Nexus 7000 M1-Series Modules contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are not available.
 
 
Description
Cisco Nexus 7000 M1-Series Modules contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to incorrect handling of crafted packets processed by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted packets to a targeted device. If successful, an attacker could cause the M1-Series module of the affected software to reload, resulting in a DoS condition.

Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
 
Warning Indicators
Cisco NX-OS Software versions 6.1 (0.208)S0) and prior are vulnerable.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker must be able to submit crafted packets to the targeted device, likely requiring the attacker to access trusted, internal networks. This access requirement limits the likelihood of a successful exploit.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
 
Vendor Announcements
Cisco has released a security notice for bug ID CSCud15673 at the following link: CVE-2013-1122
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause an affected M1-Series module to reload, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to incorrect handling of crafted packets processed by the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted packets to a targeted device that is configured with Overlay Transport Virtualization (OTV), where the physical interface of the connection is over the M1-Series module. If successful, an attacker could cause the M1-Series module of the affected software to reload, resulting in a DoS condition.
 
Safeguards
Administrators are advised to contact the vendor regarding future updates and releases.

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

Administrators are advised to monitor affected systems.
 
Patches/Software
Software updates and patches are not available.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco NX-OS Software 5.0 (3), (4), (5), (6) | 5.1 Base | 5.2 Base, S67 | 6.1 Base, (0.208)S0

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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