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AUSCERT External Security Bulletin Redistribution
ESB-2014.1086
Cisco IOS XR Software Punt Policer Denial of Service Vulnerability
7 July 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOS XR
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3308
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3308
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Cisco Security Notice
Cisco IOS XR Software Punt Policer Denial of Service Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3308
CVE ID: CVE-2014-3308
Release Date: 2014 July 3 13:13 UTC (GMT)
Last Updated: 2014 July 3 13:13 UTC (GMT)
Summary
A vulnerability in the implementation of the punt policer on Trident line
cards in Cisco ASR 9000 Series routers could allow an unauthenticated, remote
attacker to overload the CPU on the Trident line card or Route Processor (RP)
and eventually cause a denial of service (DoS) condition for traffic in some
queues.
The vulnerability is due to a missing static punt policer for traffic that is
destined to an affected device. An attacker could exploit this vulnerability
by sending a large number of specific packets that are destined to an affected
device. An exploit could allow the attacker to overload the CPU on the Trident
line card or Route Processor (RP) and eventually cause a denial of service
(DoS) condition for traffic in some queues.
Affected Products
Product More Information CVSS
Cisco IOS XR Software CSCun83985 6.4/5.3
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
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
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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