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Cisco Security Notice

Cisco IOS XE Software IP Header Sanity Check Denial of Service Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6706
CVE ID: CVE-2013-6706
Release Date: 2013 November 27 22:58  UTC (GMT)
Last Updated: 2013 December 2 21:04  UTC (GMT)

Related Resources:

View related Alert

Summary

A vulnerability in the Cisco Express Forwarding processing module that checks the sanity of IP headers on Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, leading to a denial of service (DoS) condition.

The vulnerability is due to improper processing of Multiprotocol Label Switching (MPLS) packets. When certain additional features are configured, an attacker could exploit this vulnerability by sending MPLS packets to traverse and exit an affected device as IP packets. An exploit could allow the attacker to cause the device to reload, leading to a DoS condition.

Affected Products

ProductMore InformationCVSS
Cisco IOS XE SoftwareCSCuj239925.4/4.5

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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