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Cisco Security Notice

Cisco Nexus 7000 Denial of Service Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-6396
CVE ID: CVE-2012-6396
Release Date: 2013 January 10 15:32  UTC (GMT)
Last Updated: 2013 January 10 15:32  UTC (GMT)


Summary

Cisco Nexus 7000 is affected by a Denial of Service (DoS) vulnerability where an authenticated attacker can cause memory and system resources to be exhausted. 

This vulnerability can be triggered only if a higher-density line-card is replaced in the same slot with a lower-density card, and the management station continues to try and poll the non-existent higher ports.

As a workaround, an administrator can rediscover the devices to eliminate the out of bounds polling of the non-existent interfaces or if the device is statically-configured with the MIB, disable polling for that non-existent object.

Affected Products

ProductMore InformationCVSS
Cisco NX-OS SoftwareCSCud443004.9/4.0

What Is a Cisco Security Notice?

The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco Security Notices to inform customers of low- to mid-level severity security issues involving Cisco products.

Customers who wish to upgrade to a software version that includes fixes for these issues should contact their normal support channels. Free software updates will not be provided for issues that are disclosed through a Cisco Security Notice.

For additional information about Cisco PSIRT publications, see the Cisco Security Vulnerability Policy at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html

Customers Using Third-Party Support Organizations

Customers may have Cisco products that are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers. For these products, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.

Disclaimer

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A stand-alone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy, and may lack important information or contain factual errors.

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