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Vulnerability Alert

Cisco NX-OS Software Information Disclosure Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:31137
Version:2
First Published:2013 October 07 18:20 GMT
Last Published:2014 April 01 18:15 GMT
Port: Not available
CVE:CVE-2012-4090
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Harassment
CVSS Base:4.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.8
 
 
Version Summary:Intellishield has updated this alert to reflect additional products that are affected by the Cisco NX-OS Software information disclosure vulnerability.
 
 
Description
A vulnerability in Cisco NX-OS Software could allow an authenticated, remote attacker to view sensitive information.

The vulnerability is due to improper sanitization of configuration files that can be viewed by users assigned to the network-operator role. An attacker could exploit this vulnerability by accessing the Cisco NX-OS management interface as a network-operator. A successful exploit could allow the attacker to view sensitive information in the Cisco NX-OS configuration files.

Cisco has confirmed the vulnerability in a security notice and has released software updates.
 
Warning Indicators
At the time this alert was first published, Cisco NX-OS Software versions 4.1.(2) through 5.0.(5) running on the Cisco Nexus 7000 platform and Cisco NX-OS Software versions 4.0(0)N1(1a) through 5.2(1)N1(7) running on Cisco Nexus 5000 platform were vulnerable. Other versions of Cisco NX-OS Software may also be affected.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker requires authenticated access to the targeted system. Authenticated access may require the attacker to access trusted, internal networks. These access requirements could limit 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 at the following link: CVE-2012-4090

Customers should refer to Cisco bug ID CSCti09089 for a complete list of affected product versions.
 
Impact
An authenticated, remote attacker could exploit this vulnerability to view sensitive information in the Cisco NX-OS configuration files.
 
Technical Information
Additional technical details are unavailable.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to access local systems.

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

Administrators are advised to allow only privileged users to access administration or management systems.

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 can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com
 
Alert History
 

Version 1, October 7, 2013, 2:20 PM: Cisco NX-OS Software contains a vulnerability that could allow an authenticated, remote attacker to access sensitive information on a targeted device. Updates are available.



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

Primary Products:
CiscoCisco NX-OS Software for Nexus 5000 Series Base, 4.0(0)N1(1a), 4.0(0)N1(2), 4.0(0)N1(2a), 4.0(1a)N1(1), 4.0(1a)N1(1a), 4.0(1a)N2(1), 4.0(1a)N2(1a), 4.1(3)N1(1), 4.1(3)N1(1a), 4.1(3)N2(1), 4.1(3)N2(1a), 4.2(1)N1(1), 4.2(1)N2(1), 4.2(1)N2(1a), 5.0(2)N1(1), 5.0(3)N1(1c), 5.0(2)N2(1), 5.0(2)N2(1a), 5.0(3)N2(1), 5.0(3)N2(2), 5.0(3)N2(2a), 5.0(3)N2(2b), 5.1(3)N1(1), 5.1(3)N1(1a), 5.1(3)N2(1), 5.1(3)N2(1a), 5.1(3)N2(1b), 5.1(3)N2(1c), 5.2(1)N1(1), 5.2(1)N1(1a), 5.2(1)N1(1b), 5.2(1)N1(2), 5.2(1)N1(2a), 5.2(1)N1(3), 5.2(1)N1(4), 5.2(1)N1(5), 5.2(1)N1(6), 5.2(1)N1(7) | for Nexus 7000 Series Base, 4.1.(2), 4.1.(3), 4.1.(4), 4.1.(5), 4.2.(2a), 4.2(3), 4.2(4), 4.2(6), 4.2(8), 5.0(2a), 5.0(3), 5.0(5)

Associated Products:
N/A



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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