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Cisco Security Notice : Cisco NX-OS Software BGP Denial of Service Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4098
CVE ID: CVE-2012-4098
Release Date: 2013 October 4 15:12 UTC (GMT)
Last Updated: 2013 October 4 15:12 UTC (GMT)


Summary

A vulnerability in the Border Gateway Protocol (BGP) component of Cisco NX-OS Software could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition by causing the BGP service to reset and resync.

The vulnerability is due to improper filtering of invalid AS Path values. An attacker could exploit this vulnerability by sending a malformed BGP update to a downstream peer of the affected device. A successful exploit could result in the downstream peers resetting the BGP connection with the affected device.

Affected Products

ProductMore InformationCVSS
Cisco NX-OS SoftwareCSCtn130554.3/3.4

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

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